138 BULLETIN 160, UNITED STATES NATIONAL MUSEUM 



B.M. Nos. 82. 12. 5. 11-12, two cotypes: (a), Head-and-body 

 length, 84 mm.; transverse diameter of tympanum, 4.4 mm.; trans- 

 verse diameter of eye, 7.5 mm.; posterior margin of bony casque to tip 

 of snout, 30.2 mm.; width of head at level of posterior angles of jaws, 

 25.2 mm.; tip of snout spinose; skin on abdomen fairly smooth; body 

 soft; (b), head-and-body length, 87.9 mm.; transverse diameter of 

 tympanum, 4.2 mm.; transverse diameter of eye, 7.2 mm.; posterior 

 margin of bony casque to tip of snout, 30.9 mm.; width of head at 

 level of posterior angles of jaws, 23.6 mm.; tip of snout fairly smooth; 

 skin on abdomen strongly areolate; body somewhat dried. 



An entomological collector, J. Aug. Kusche, presented an adult 

 specimen of this species to the National Museum and noted on the 

 accompanying label that it was found in a white-ant nest in a tree at 

 Venodio. In 1882, Doctor Forrer returned to London with three 

 living specimens, which were described by Giinther as follows : 



The coloration is a uniform light olive, without any spots, changing in intensity 

 of shade only; the upper side of the head is sometimes of a yellowish bronze color 

 * * * the pupil is transversely oval when expanded, and subquadrangular 

 when more contracted, but never vertical. It can be shut entirely. 



Specimens examined. — Four, as follows : 



Diaglena spatulata 



' Cotypes. 



Genus TRIPRION Cope 



1865. Pharyngodon Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 17, p. 193, 



Oct. [Genotype, Pharyngodon petasatus Cope, idem, p. 193 (vicinity of 

 Merida, Yucatan, Me.xico).] (Preoccupied by Pharyngodon Diesing, 

 1860, Sitzungsber. k. Akad. Wiss. math.-naturw. Classe, Wien, vol. 42, 

 no. 28, p. 642, Dec. 6.) 



1866. Triprion Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 18, p. 127, May. 



[Genotype, Triprion petasatus — Pharyngodoyi petasatus Cope.] 



A tree frog that lives in the lowlands of Yucatan and that has a 

 bony casque but lacks palatine teeth is the sole known representative 

 of this genus. 



TRIPRION PETASATUS (Cope) 



1865. Pharyngodon petasatus Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 17, 

 p. 193, Oct. 



1866. Triprion petasatus Cope, Proc. Acad. Nat. Sci. Philadelphia, vol. 18, p. 127, 

 May. — Cope, 1866, Journ. Acad. Nat. Sci. Philadelphia, n. s., vol. 6, pt. 1, 

 p. 112, pi. 25, figs. 7-8, July. 



