458 PIPID.A, 
Differs from X. Jevis in the longer, tentacle below the eye (this 
tentacle measuring about the diameter of the eye), and the presence 
of a sharp claw at the base of the first toe. Hind limb longer, the 
tarso-metatarsal articulation marking the tip of the snout ( 2 ) or 
beyond. Size smaller. 
Tropical Africa. 
a-c. 2 & her. Zanzibar. Sir J. Kirk [C.]. 
d. 9. Benguella. Prof, Barboza du Bocage [P. ]. 
e-f. Her. W. Africa. Mr. Fraser [C.]. 
g. Ugr. W. Africa. 
3. Xenopus calcaratus. 
Dactylethra miilleri, Hallo. Proc. Ac. Nat. Se, Philad. 1857, p. 65; 
A. Dum. Arch, Mus. x. p- 251, pl. 18. f. 6. 
Silurana tropicalis, Gray, Ann. & Mag. N. H, xiv. 1864, p. 515, and 
Proc. Zool. Soc, 1864, p. 458. 
Xenopus miilleri, Steindachn. Novara, Amph, p. 4. ° 
calcaratus, Buchh. § Peters, Mon. Berl. Ac, 1875, p. 200. 
Well distinguished from the two preceding by the smaller head 
and extremely minute eyes. A much developed metatarsal claw. 
Subocular tentacle short. Tarso-metatarsal articulation marking 
the eye, or not quite so far. Size small. 
West Africa. 
a-d. SQ. P Stevens. 
e-h, Larvee. Lagos. T, Moore, Esq. [P.]. (Types 
of Silurana tr oprcalis, ) 
14, PIPIDZ. 
Astrodactylidee, Hogg, Classif. Amph., Mag. N. H, (n.s.) iii. 1839 
(name only). 
Pipidee, Giinth. Cat.; Cope, Nat. Hist. Rev. 1865; Mivart, Proc. 
Zool. Soc. 1869. 
Teeth none. 
1. PIPA. 
Pipa, Laur. Syn. Rept. p. 25; Merr., Tent. p. 179; Cuv. Regne 
Anim.; Dum. §& Bibr, viii. p. "767 ; Gtinth. Cat. p. 2. 
Asterodactylus, Wagl. Syst. Amph. p. 199; Tschudi, Batr. p. 89. 
Leptopus, sp., Mayer, Anal. p. 34. 
Pupil round. Palate smooth. No tympanum. Fingers free, 
ending in four appendages; toes very broadly webbed, pointed. 
Outer metatarsals separated. Female with pouches in the back. 
Coracoids and precoracoids strongly divergent, former much dilated, 
connected by a broad double, not overlapping, cartilage; omo- 
sternum rudimentary ; sternum a large cartilaginous plate. "Diapo- 
physes of sacral ver tebra ver y strongly dilated. Terminal phalanges 
pointed. 
Tropical America. 
