PARATYPES.--No. 19238, data same as on holotype. Nos. 19239 and 19240, 20 miles south of Ciudad Chihuahua, Chihuahua, México; David H. Dunkle and Hobart M. Smith; June 21, 1934. NOTE.--Formerly these specimens were respectively H. M. Smith Nos. 132, 128, 141 and 143, as given in the original description. ~_Xenosaurus nemanorum_~ Taylor, Univ. Kansas Sci. Bull., 33:183, April 20, 1949. PARATYPES.--Nos. 24043-24047, Xilitla region, San Luis Potosí, México; Marcella Newman; April 27-June 1, 1947. NOTE.--Formerly these specimens were respectively Louisiana State University Nos. 502, 496, 492, 503, and 489. SERPENTES ~_Bothrops schlegeli supraciliaris_~ Taylor, Univ. Kansas Sci. Bull., 36:791, fig. 39, July 15, 1954. HOLOTYPE.--No. 31997, mountains near San Isidro del General, San José Province, Costa Rica; collector and date unknown. ~_Coniophanes fissidens obsoletus_~ Minton and Smith, Herpetologica, 16:108, fig. 1, June 17, 1960. PARATYPES.--Nos. 30976-30979, 34834, Turrialba, Cartago Province, Costa Rica; John Baker and Edward H. Taylor; June-August, 1951. ~_Dipsas costaricensis_~ Taylor [= _Sibon longifrenis_ (Stejneger), according to Peters (Misc. Publ. Mus. Zool. Univ. Michigan, 114:192, 1960)], Univ. Kansas Sci. Bull., 34:63, pl. 7, fig. 2, October 1, 1951. HOLOTYPE.--No. 25703, Morehouse Finca, 5 miles southwest of Turrialba, Cartago Province, Costa Rica; Edward H. Taylor; July 16, 1947. ~_Dipsas tenuissima_~ Taylor, Univ. Kansas Sci. Bull., 36:771, figs. 28-29, July 15, 1954. HOLOTYPE.--No. 31961, 15 kilometers west-southwest of San Isidro del General, San José Province, Costa Rica; Edward H. Taylor; July 10, 1952. ~_Dryadophis sanguiventris_~ Taylor, Univ. Kansas Sci. Bull., 36:722, July 15, 1954. HOLOTYPE.--No. 31978, Esquinas Forest Reserve, Las Esquinas, between Golfito and Palmar, Puntarenas Province, Costa Rica; Edward H. Taylor; September 3, 1952. ~_Ficimia streckeri_~ Taylor, Copeia, 1931(1):5, March 31, 1931. HOLOTYPE.--No. 9140, 3 miles east of Rio Grande City, Starr County, Texas; Edward H. Taylor; July 13, 1930. NOTE.--Taylor (1931:5) erroneously listed the number of the holotype as 4140. ~_Geophis acutirostris_~ Taylor, Univ. Kansas Sci. Bull., 36:691, fig. 3, July 15, 1954. HOLOTYPE.--No. 34670, Cot, south slope of Volcán Irazú, Cartago Province, Costa Rica; Edward H. Taylor; July 2, 1952. ~_Geophis aquilonaris_~ Legler, Univ. Kansas Publ. Mus. Nat. Hist., 11:329, figs. 1-2, January 28, 1959. HOLOTYPE.--No. 44265, 23 miles south and 1.5 miles east of Creel, Chihuahua, México; Ronald H. Pine; July 23, 1957. PARATYPE.--No. 44266, data same as on holotype. ~_Geophis bakeri_~ Taylor, Univ. Kansas Sci. Bull., 36:689, July 15, 1954. HOLOTYPE.--No. 31983, Isla Bonita, Heredia Province, Costa Rica; Edward H. Taylor; July 19, 1952. PARATYPES.--No. 30940, Pacayas, Cartago Province, Costa Rica; Edward H. Taylor; August 6, 1951. Nos. 31982, 31984, data same as on holotype.