Gadow (1930:50) reported that _Caiman sclerops_ (= _Caiman crocodilus fuscus_) inhabited the "tierra caliente" in Michoacán. Smith and Taylor (1950b:212) accepted Gadow's record for the State, although otherwise the species is unknown north of Oaxaca. Peters (1954:10) refuted Gadow's record on the basis that Gadow's collections contained no specimens of _Caiman_. The local name "caiman" refers to both _Crocodylus_ and to _Caiman_, for, in general, the natives do not distinguish between the two. "Caimanes" are reported from along the coast of Michoacán, where the name presumably refers to _Crocodylus acutus acutus_, and in the Balsas-Tepalcatepec Basin (Gadow, 1930:50; Webber, 1946:267). I have seen no specimens of either _Crocodylus_ or _Caiman_ from the Balsas Basin. If crocodilians do occur in the basin, they probably are _Crocodylus acutus acutus_. There is no basis, whatsoever, for including Michoacán in the range of _Caiman crocodilus fuscus_. ~Bipes canaliculatus~ Bonnaterre _Bipes canaliculatus_ Bonnaterre, Encyclopédie méthodique, Erpétologie, p. 68, 1789.--México. Type locality restricted to Mexcala, Guerrero, México, by Smith and Taylor (1950b:39). Dugès (1896:480) reported this species from Morelia, Michoacán. Smith and Taylor (1950b:39), who recorded the species from three localities in the Balsas Basin in Guerrero, rejected Dugès' record. I, too, am unwilling to accept Dugès' record. Nevertheless, the species probably occurs throughout much of the Balsas Basin. This idea is strengthened by comments made by Storm (1939:342): "The last hard drop, that afternoon, was down the great Cerro de los Cajones [southwest of Tacámbaro], and here in the upper forest we came upon... a lizard with front legs and none behind ... the animal with hands and no feet that señor Smith [Hobart M. Smith] was seeking!... They're named _Bipes caniculatus_ (_sic._)." ~Coleonyx elegans nemoralis~ Klauber _Coleonyx elegans nemoralis_ Klauber, Trans. San Diego Soc. Nat. Hist., 10:195, March 9, 1949.--Paso del Río, Colima, México. Klauber (1945:199) and Smith and Taylor (1950b:43) reported this lizard from the coastal lowlands of Colima and Guerrero. Davis and Smith (1953:101) reported it from 8 kilometers northeast of Temilpa, Morelos, in the upper Balsas Basin. Specimens of this lizard have been collected infrequently; the few locality records and limited ecological data indicate that it inhabits dense scrub forest and tropical semi-deciduous forest. _Coleonyx elegans nemoralis_ is to be expected on the coastal lowlands, the seaward foothills of the Sierra de Coalcomán, and on the lower slopes of the Cordillera Volcánica along the northern edge of the Tepalcatepec Valley. ~Phrynosoma orbiculare orbiculare~ (Linnaeus)