TA) RANIDA.—DENDROBATID, 
eyelid; tympanum rather more than 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. 
Gos: Intac. - Mr. Buckley [C.}. 
18. COLOSTETHUS. 
Colostethus, Cope, Proc. Ac. Philad. 1866, p. 130, and Journ. Ae. 
Philad, (2) vi. 1867, p. 197. 
Pupil horizontal. Tongue elliptic, entire and free behind. 
Vomerine teeth none. Tympanum distinct. Fingers and toes free, 
the tips dilated into distinct disks. Outer metatarsals united. No 
omosternum ; sternum rudimentary, membranous. ‘Terminal pha- 
langes with transyerse limb. 
Colombia. 
1. Colostethus latinasus. 
Phyllobates latinasus, Cope, Proc. Ac. Philad. 1863, p. 48. 
Colostethus latinasus, Cope, eod. loc. 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, DENDROBATIDA. 
Hylaplesidee, Giinth. Cat. Batr. Sal.; Mivart, Proc. Zool. Soc. 1869. 
Dendrobatidee, Cope, Nat, Hist. Rev. 1865, and Journ. 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 Ranide, especially the last four 
genera. Between Prostherapis and Dendrobates 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. 
