140 



EANID^. DENDKOBATID^. 



eyelid; tympanum rather more ttan half the width of the eye. 

 First and second fingers equal ; toes with a slight rudiment of web ; 

 subarticular tubercles small ; two small metatarsal tubercles. The 

 hind limb being carried forwards along the body, the tibio-tarsal 

 articulation reaches the eye. Skin smooth. Brownish above, 

 maculated with dark brown ; sides dark brown ; upper lip white ; a 

 white stripe from eye to groin ; whitish beneath, immaculate. 

 Ecuador. 



a. 5. Intac. Mr. Buckley [0.]. 



18. COLOSTETHUS. 



Colostethus, Cope, Proc. Ac. Philad. 1866, p. 130, and Journ. Ac. 

 PMlad. (2) vi. 1867, p. 197. 



Pupil horizontal. Tongue elliptic, entire and free behind. 

 Vomerine teeth none. Tj'mpanum distinct. Pingers and toes free, 

 the tips dilated into distinct disks. Outer metatarsals united. No 

 omosternum ; sternum rudimentary, membranous. Terminal pha- 

 langes with transverse limb. 



Colombia. 



1. Colostethus latinasns. 



Phyllobates latinasus, Cope, P)-oe. Aa. Philad. 1863, p. 48. 

 Colostethus latinasus, Cope, eod. he. 1866, p. 130. 



Head elongate; snout prominent, broad and concavely truncate, 

 as long as the greatest orbital diameter. Tympanum one fourth 

 extent of orbit. A dermal fold on the tarsus ; two metatarsal 

 tubercles. The hind limb being carried forwards along the body, 

 the tibio-tarsal articulation reaches the anterior border of the orbit. 

 Above brown ; a black band across end of snout and loreal region, 

 through eye to groin, pale-bordered above on the snout, and inter- 

 rupted by an oblique white line from the femur ; femur dark pos- 

 teriorly, tibia cross-banded ; beneath pale, immaculate. 



Truando region, Colombia. 



2. DENDROBATID-ffl. 



HylaplesidsB, Oiinth. Cat. Batr. Sal. ; Mivart, Proc. Zool. Sac. 1869. 

 Dendrobatidse, Cope, Nat, Hist. Rev. 1865, and Joii/rn. Ac. Philad. (2) 

 vi. 1867. 



Teeth none ; diapophyses of sacral vertebra not dilated. 



This family includes two genera. But for the absence of teeth, 

 these forms agree perfectly with the Banidm, especially the last four 

 genera. Between Prostherapis and Dendrohates the analogy is so 

 great in every respect, anatomical as well as external, that, were it 

 not for the presence of maxillary teeth in the former, both genera 

 might be united. 



