MEXICAN TAILLESS AMPHIBIANS 113 



Type locality. — Orizaba and Cordoba, State of Vera Cruz, Mexico. 



Range. — From Orizaba in Vera Cruz southward through Chiapas 

 to Costa Rica; apparently restricted to the eastern side of the Mexican 

 Plateau. 



Remarks. — The type of Lithodyies rhodopis was not designated by 

 Cope. A specimen (U.S.N.M. No. 16558) from the vicinity of Orizaba 

 agrees with the measurements published by Cope and may be des- 

 ignated as the electotype. Some of the other specimens (U.S.N.M. 

 Nos. 16557, 16559-61) mentioned by Cope in his original description 

 have been located, and they should be considered as paratypes. In 

 1869, Cope remarked that his L. rhodopis was the same as Giinther's 

 Hylodes sallaei. According to Dr. E. R. Dunn, who has recently 

 examined the type (B.M. No. 57. 7. 31. 27), H. sallaei is unquestion- 

 ably identical with E. rhodopis. This assumption is corroborated by 

 the following notes made on the type specimen: 



Head-and-body length, 27.7 mm. ; transverse diameter of tympanum 

 2 mm.; transverse diameter of eye, 3.3 mm.; anterior edge of eye to 

 nostril, 3.3 mm.; the hind limb being carried forward along the body, 

 the tibio-tarsal joint reaches to the end of the snout; inner metatarsal 

 tubercle of medium size, outer one minute; a short tarsal fold ending 

 in a crestlike tarsal tubercle; rows of minute supernumerary tubercles 

 on plantar surface of foot; first finger slightly longer than second; 

 vomerine teeth in two short obHque rows, widely separated medially, 

 well behind, and within level of the choanae; under surface of thighs 

 granular, abdomen areolate; an exceedingly fine vertebral dermal 

 ridge from occiput to vent; an oblique dermal ridge extending from 

 postero-external angle of eye to short glandular ridge in a black spot 

 at about middle of back, forms inverted chevron with opposite dermal 

 ridge; a lateral linear dermal ridge from shoulder backward to and 

 along sacrum ; and lateral to this another linear dermal ridge extends 

 from posterior edge of eye, above tympanum, and backward along 

 side to a point slightly beyond middle of body; skin of upperparts 

 with rather scattered minute glandular asperities; glandular asperities 

 on sides are rather closely approximated and somewhat linear in 

 arrangement; black streak from tip of snout to nostril and along 

 canthus rostralis to eye, and from eye backward above tympanum 

 and downward behind to below level of angle of jaw. 



The type of Hylodes sallaei was received from Auguste Sall6 and 

 presumably came from the State of Vera Cruz. Giinther laid 

 considerable emphasis on the fact that the skin on the posterior half 

 of the abdomen was granular, though he admits that in consequence 

 of imperfect preservation this granulation may be obliterated. On 

 some specimens the skin of the underparts seems to be smooth, 

 though an areolated condition may be seen on closer inspection with 

 a lens, and on others the skin is distinctly granulated. This criterion 



