110 BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



not grooved or divided; a pair of converging linear dorsal dermal 

 ridges inclosing an hourglass-shaped area, and a pair of dark spots, 

 one on each side, external to ridge; abdomen and under surface of 

 thighs areolate; both specimens are young individuals. Syrrhaphus 

 omiltemanus is a strict synonym of E. calcitrans = E. mexicanus. 



One of the cotypes of Hylodes calcitrans from Jalisco (B. M. Nos. 

 1901 . 12. 19. 35-36) could not be found, and the other one does not have 

 converging linear dermal ridges on the upperparts such as are present on 

 some of the specimens in the United States National Museum. The 

 following notes were made on this cotype: Head-and-body length, 

 34.5 mm.; transverse diameter of tympanum, 3.6 mm.; transverse 

 diameter of eye, 4.3 mm.; anterior edge of eye to nostril, 3.5 mm.; 

 lateral dermal fold extends backward over tympanum and along side 

 of body; dermal asperities present on sides of body and on back in 

 sacral region; large subarticular tubercles; small supernumerary 

 tubercles on plantar surface of foot; unusually large inner metatarsal 

 tubercle and minute conical outer one; no tarsal fold; vomerine teeth 

 in two small clusters, each about the diameter of a choana, widely 

 separated medially, within and considerably behind level of choanae; 

 skin on abdomen areolate, but smoother than on Omilteme cotypes; 

 light vertical bars on upper lip ; a black canthal stripe, but side of head 

 is not so dark as in Borborocoetes mexicanus; upperparts gray. 



Nineteen cotypes (B.M. Nos. 1901. 12. 19. 25-43) from Omilteme 

 in Guerrero were received from F. D. Godman. All these have 

 areolate skin on the abdomen, but this seems to have resulted in part 

 at least from partial desiccation at some time. Only two have small 

 supernumerary tubercles on the plantar surface of foot. On all the 

 upper surface of the snout is light colored, the thighs and tibiae 

 have transverse dark bands, and vomerine teeth are present. Eleven 

 specimens have distinct medially converging dorsal dermal ridges 

 that inclose an hourglass-shaped area. Nine have the anterior end 

 of each of these dermal ridges ending in a black dermal elevation, 

 lateral and posterior to which is a second short black dermal elevation 

 that is not connected with either of above ridges. Thus on each 

 side of the vertebral line in the suprascapular region there is a pair 

 of short black dermal ridges. One cotype measured by Giinther 

 has: Head-and-body length, 36.6 mm.; transverse diameter of tym- 

 panum, 2.5 mm.; transverse diameter of eye, 3.9 mm.; anterior edge 

 of eye to nostril, 3.3 mm.; no dark band on side of head, though it is 

 present behind tympanum to a point about halfway length of side; 

 skin of upperparts fairly smooth; converging linear dorsal dermal 

 ridges absent; large inner and small outer metatarsal tubercle; no 

 tarsal fold; undersurface of thighs coarsely granular; skin of abdomen 

 areolate; large subarticular tubercles; no supernumerary tubercles 

 on plantar surface of foot; vomerine teeth in short, oblique, posteriorly 



