MEXICAN TAILLESS AMPHIBIANS 



139 



Type locality. — Vicinity of Merida, State of Yucatan, Mexico. 



Range. — Not known to occur elsewhere than on the peninsula of 

 Yucatan. 



Remarks. — The type of this species (U.S.N.M. No. 12287) was 

 taken from a hole in the rocky wall of the Cenote Pamanche near 

 Merida on the road to Progressa. It is fairly well preserved not- 

 withstanding numerous dissections made by Cope. The sternum has 

 been dissected, the viscera are exposed by a longitudinal slit in the 

 abdominal wall, and the shoulder girdle, sacrum, and sacral diapo- 

 physes have been freed from their muscle attachments through a 

 longitudinal incision in the skin on the back. The measurements of 

 this specimen are as follows: Head-and-body length, 72.5 mm.; 

 transverse diameter of tympanum, 4 mm.; transverse diameter of eye, 

 6.8 mm.; anterior edge of eye to nostril, 10.3 mm; width of head at 

 level of posterior angles of jaws, 22.7 mm.; posterior margin of bony 

 casque to tip of snout (extremity missing), 25 mm. 



The following field notes of Leon J. Cole ^^ made at Chichen Itza 

 in Yucatan are of special interest : 



Note an unmusical, rather drawn-out quarr-quarr-quarr . Not guttural, but 

 with a rasping quality. Life colors as follows: Top of head fuscous, with silvery 

 greenish gray dots; back silvery gray, with dark fuscous blotches and smaller 

 spots; sides with yellowish green suffusion; arms and legs brown, with yellowish 

 blotches on upper arms and legs; silvery gray on lower arms and legs. Under 

 sides whitish. The gray has a decided greenish tinge, which became more marked 

 in a short time while the creature was held in the hand. This frog was not heard 

 during the drier part of the season (February and most of March), but was heard 

 quite frequently during the last part of March, when there was more rain. 



Specimens examined. — Four, as follows: 



Triprion pelasatus 



1 Type. 



Genus PHYLLOMEDUSA Wagler 



1830. Phyllomedusa Wagler, Nattirliches System der Amphibien, p. 201, Aug. 

 [Genotype, Hyla bicolor Daudin, 1S03, Histoire naturelle des rainettcs, des 

 grenouilles et des crapauds, pp. 16-17, pis. 5, Q = Rana bicolor Boddaekt, 

 1772, Epistoladeranabicolore, p. 19, pi. (unnumbered), figs. 1-5 (Surinam). i 



" Barbour, Thomas, and Cole, Leon J., Vertebrata from Yucatan, Reptilla, Amphibia, and Pisces. 

 Bull. Mus. Comp. Zool., vol. 50, no. 5, p. 154, Nov., 1906. 



