399 



nature of the vomerine teeth as even a specific character, and 

 as I have seen only one female of prosoblepon with a humeral 

 hook, I cannot accept the genus Centrolenella (Noble 1920, Bull. 

 Amer. Mus. Nat. Hist. 52, p. 441, type C. antioquiensis) as 

 distinct from Centrolene (based on absence of hook and of 

 vomerine teeth.) 



I have seen the following in the field: two valerioi from La 

 Palma; ten 'prosoblepon from La Palma; two pulveratum from 

 Barro Colorado Island; one fleischmanni from Suretka, four 

 from San Jose, and six were taken and more seen on Barro 

 Colorado Island. I say this because I might otherwise seem to 

 be dealing harshly with the species of a supposedly rare and 

 little-known group. Besides the 25 of my own collecting I have 

 seen 60 more of these forms in various museums, so my remarks 

 are based on 85 specimens, 78 of which are from Panama and 

 Costa Rica. The results of observations on these specimens 

 are the following ranges and synonymies: 



Centrolene fleischmanni. San Jose, La Palma, Turrialba, Surubres, Suretka, 

 Costa Rica; Ft. Davis, Barro Colorado Island, Rio Esnape, Calah Cr., Rio 

 Sucubti, Panama; Salidero, Ecuador 29 specimens. (Hylella fleischmanni 

 Boettger, Ber. Senckenberg, Ges. 1893, p. 251, San Jose, Costa Rica, Type, 

 Senck. Mus. no. 1419a; Hylella chrysops Cope 1894, Proc. Acad. Nat. Sci. 

 Philadelphia, p. 196, San Jose and Alajuela, Costa Rica; Centrolenella para- 

 bambae Noble 1925, Amer. Mus. Nov. 165 p. 13). 



Centrolene valerioi. La Palma, Costa Rica. 2 specimens. 



Centrolene pulveratum. Turrialba, Bebedero, Costa Rica; Chiriqui, Barro 

 Colorado Island, Panama; Pueblo Rico, Choco, Colombia (?); Paramba, 

 Salidero, Rio Durango, Rio Japayo, Ecuador. 13 specimens. (Hyla pulverata 

 Peters, M. B. Ak. Berlin, 1873, p. 614, Chiriqui, type Berlin no. 7842; Hylella 

 parambae Boulenger 1898, Proc. Zool. Soc. London, p. 125, pi. 17, fig. 2 (para- 

 bambae in original desc. but ovbious typ. error.) Paramba, Ec. Type, B. M. 

 N. H. no. 98— 4--28— 163). 



Centrolene prosoblepon. La Palma, Bebedero, Limon, La Junta, San 

 Isidro, Costa Rica; Bocas del Toro, Bugaba, Progreso, Boquete, Cabima, Las 

 Cascadas, Barro Colorado Island, Panama. 41 specimens. {Hyla prosoblepon 

 Boettger, Kat. Batr. Mus. Senckenberg, 1892, p. 45, La Junta, Costa Rica, type, 

 Senck. Mus. no. 1400, la; Hylella puncticrus Boulenger, Ann. Mag. Nat. Hist., 

 1896, 18, p. 341, La Palma, Costa Rica, type, B. M. N. H. no. 96-10-8-70-71). 



Several species of this group have been described from South 

 America, and I have not seen the types, but save for valerioi, 

 which is obviously distinct, the Central American names ante- 

 date all others, and are certainly applicable. 



