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Costa Rica, grounds of agricultural institute just SE of Turrialba - under rock nr. small lake (9 deg 53'N; 83 Deg 40'W)

NM, Luna Co., 11.8 rd. mi. W of Columbus, 7.4 mi. E of Hermanas (Center, Sec. 2, T 29 S, R 10 W)

Guadalupe River below dam, 1 mi. W Ingram (33 deg 04.22'; -99 deg 15.23')

Sierra Diablo, Sierra Diablo Wildlife Mgmt Area, scarp below Bat Cave (31 deg 14.91'; -104 deg 54.08')

Texas Tech Center at Junction; E bank of South Llano River, from surface to 2' depth of fill. (30 deg 28.4'; -99 deg 47.0')

TX, Hudspeth Co., Village Town of Sierra Blanca; Hwy. 1111 crossing of RR tracks

Franklin Mts: 0.4 mi. NW from top of South Franklin Mtn. in canyon draining North (31 deg 52'08"N, 106 deg 29'40"W)

USA, Florida, Lake Co., Ocala National Forest, Alexander Spring, T16S, R27E

USA, New Mexico, Dona Ana Co., San Andres Mts: Below cliffs on SE side of Little San Nicholas Cayon, elev. 6175 ft, T20S, R4E, SE 1/4 NW 1/4 Sec. 23

Franklin Mts., limestone talus on slopes of steep-walled canyon (31 deg 49.399'; -106 deg 29.770') T27S R4E SW 1/4 Sec. 36

Franklin Mts., south slope of South Franklin Mtn., below prominent cliffs on west slope of canyon debouching southward into McKelligon Canyon Park (31 deg 51.265'; -106 deg 29.521') T27S R4E SW 1/4 Sec.24

Franklin Mts., Canyon debouching westward into the Coronado Country Club Subdivision (31 deg 50.997'; -106 deg 30.032') T27S R4E NE 1/4 Sec. 26

Franklin Mts., limestone talus in wallsof stepp-walled canyon debouching into east side of Coronado Hills Subdivision (31 deg 50.125'; -106 deg 29.985') T27S R4E NE 1/4 Sec.35

Franklin Mts, 5 1/2 mi. E Nuway and Mt. Zion Church, SE arm of first canyon north of northernmost part of Tom Mays Park (31 deg 56.057'; -106 deg 30.213') T27S R4E NE 1/4 Sec. 26

Franklin Mts., Tom Mays Park, West Cottonwood Springs (31 deg 54.932'; -106 deg 29.846') T27S R4E E 1/4 Sec. 35

Mouth of Vinton Canyon, just east of the outcrop of massive La Tuna Ls., that produces a gate effect. (31 deg 57.902'; -106 deg 30.762') T27S R4E Near intersection of secs. 10, 11, 14, and 15

6.5 mi S of Juno, 3rd crossing of Devil's River south of Juno, sediments on west side of low water bridge

NM, Sierra Co., Cuchillo Mts. Ladder Ranch, Twin Peaks, east slope of the more northern peak (NW 1/4, SE 1/4, Sec.17, T 12 S, R 7 W)

MX, Chiapas, Berriozabal, 12 km N Berriozabal, elev. 1120 m

NM, Sierra Co., Cuchillo Mts. "W slope, ca. 0.25 Km W of highest peak"- BKL (NW 1/4, NE 1/4, Sec. 32, T 11 S, R 7 W)

NM, Dona Ana Co., Organ Mts: Upper end of Indian Hollow Canyon, below (east of) Organ Needle (TT22S, RR4E, NW 1/4 SE 1/4 SW 1/4 Sec. 32)

TX, Hudspeth Co., Indio Mts., Red Tank (completely dry), Indio Ranch

Gulf Coast, 30 mi. S Galveston (29 deg 01.5'; -95 deg 11.5')

NM, Dona Ana Co., San Andres Mts: East side of Goat Mountain (TT20S, RR5E, SW corner of SE 1/4 SW 1/4 Sec. 17)

TX, Hidalgo Co., ca. 7 km (air) WNW Penitas, abandoned gravel pit

FL, Liberty Co., nr Sweetwater Cr., Rock Bluff Qund.

TX, Presidio Co., Big Bend Ranch State Natural Area. The Solitario, stock tank 3 air mi. ENE from the top of El Solitario Peak

Black Gap State Wildlife Management Area, in dry stock tank (29 deg 34'; -102 deg 57')

4.5 mi. SE of Coleman (31 deg 46.38'; -99 deg 26.85')

Cliffs on north side of USHwy 90, 3 mi. W of jct of USHwy 90 and USHwy 285 on west side of Sanderson (30 deg 09.1'; -102 deg 37.1')

Along floodplain of Rio Grande 3.5 mi SE of Alamito Cr., & 5.4 mi NW Redford, just N or intersection of 29 deg 30'N lat. & 104 deg 15' W long. (29 deg 30.2'; -104 deg 14.6')

Rio Grande at Roma, 0.35 mi. NW of International Bridge, on east side of island (road leads from north part of Roma, down to locality) (26 deg 24.47'; -99 deg 01.32')

Texas, El Paso Co., Franklin Mts., W side of North Franklin Mtn., ca. 0.6 air mi. WNW from top; base of ls. outcrops that face generally N, elev. 5200-6000' (31 deg 54'25"N; 106 deg 30' 15"W)

Canyon entering Pecos River Canyon from east, opposite mouth of Independence Creek (30 deg 26.60'; -101 deg 43.20')

Hueco Tanks State Park, on hillside south of south end of large earthen dam at west side of Park (31 deg 54.94'; -106 deg 02.82')

Melchor Musquiz, Sierra Santa Rosa, near the summit of the Rincon de Maria, in sheltered mesic fissure in massive limestone cliff (28[X]28'N, 102[X]04'W)

Questa del Plomo, in matorral along Musuiz-Boquillas Road (28[X]43'N, 102[X]32'W)

NM, Dona Ana Co., San Andres Mts: S side of Black Mountain, in canyon below prominent talus accumulation (TT21S, RR4E, SE 1/4 NE 1/4 NE 1/4 Sec. 12)

NM, Dona Ana Co., San Andres Mts: Under cliffs on south side of Loman Canyon (TT21S, RR4E, SW 1/4 SW 1/4 NW 1/4 Sec. 17) (UTM Zone 13, 3594845.0 N, 353115.2 E)

USA, New Mexico, Eddy Co., Gravels of Pierce Crossing of Pecos River, west of River & SE of road, T24S, R29E, SW 1/4 NW 1/4 Sec. 27

NM, Socorro Co., San Mateo Mts., west side of Mt. Withington, at pass on NM Hwy 52 (highest point at turnoff to Mt. Withington)

Guadalupe Mts., Pine Springs, under stone, just west of village (31 deg 53.50'; -104 deg 47.85')

NM, Socorro Co., Campus of New Mexico Institute of Mining and Technology in city of Socorro, under pampas grass

Big Bend National Park, Rio Grande Village area (29 deg 10.96'; -102 deg 57.66')

Texas, El Paso Co., Franklin Mtns, 0.3 air mi. NW from top South Franklin Mtn. in steep limestone cn. draining N, elev. 6000' (31 deg 51' 57"N; 106 deg 29'30"W)

NM, Dona Ana Co., San Andres Mts: At base of cliffs on S-side of Bear Canyon arroyo (TT20S, RR4E, 0.05 mi. of W center, N section line, of Sec. 36) (UTM Zone 13, 3541403.5 N, 359411.1 E)

NM, Dona Ana Co., San Andres Mts: Below cliffs on E-facing wall of steep sided canyon running northeastward into Bear Canyon, ca. 10 mi. SSE of domelike rock feature (TT20S, RR4E, SW 1/4 NE 1/4 NW 1/4 Sec. 36) (UTM Zone 13, 3541405.8 N, 359241.3 E)

Texas, El Paso Co., Franklin Mts., West Cottonwood Spring; under rocks along small spring-fed break, elev. 5700' (31 deg 55' 11"N, 106 deg 29'51"W)

Texas, Culberson Co., Wild Horse Draw at high power transmission line (2.3 mi. W of Seven L Peak; basin of deep soil, snails 1 ft. deep in buried soil horizon, elev. 4030' (31 deg 44' 15"N; 104 deg 29' 30"W)

NM, Eddy Co., Guadalupe Mts., Rim Road at Indian View (TT26S, RR21E, SE 1/4, SE 1/4, NW 1/4, Sec. 9) (UTM Zone 13, 3546600 N, 518900 E)