REPTILIA. 281 



Sp. Typhlops JDelalamUi Mus. Par. L. B., Schleg. Ahh. PI. 32, figs. 17 — 

 20, Cape of Good Hope ; — Onychocephnlus niijrolineatus Hallowell, 

 Journal of the Academy of nal. So. of Philad. Sec. Ser. 11. p. 301, PI. 28, 

 fig. I, Liberia. 



Tribe II. AmpJiiceplmU. 



Tongue short, thick, posteriorly bilobed, anteriorly with apex 

 double, narrow, very short. Branches of lower jaw conjoined 

 anteriorly by symphysis. 



If the separation of the lower jaw, and the narrow, forked, exten- 

 sile tongue be made the characteristic of ^e order of serpents, then 

 the genus Amphisbcena ought to be removed from it, and placed 

 amongst the lizards. This is the opinion of modern authors, and 

 may in fact be justified by the resemblance between some lacertine 

 animals (Ophisaurus, Pseudop>his) and Amphisbama. The row of 

 pores in front of the cloacal aperture corresponds to the pori Jemo- 

 rales which are met with in many Saurii. 



Family XV. AmpMsbcencB Wiegm. Teeth in intermaxillary 

 bone, in upper and lower jaw-bones ; upper and lower teeth 

 alternating- and interlocking when the mouth is closed ; palatine 

 and pterygoid bones edentulous. Trunk cylindric ; skin ringed 

 with numerous deep, circular folds ; rings divided by longitudinal 

 inscriptions into small rectangular areas resembling scales. Head 

 scutate. Eyes small, covered by scute. Tail short. 



Amphisbcena L. Feet none. 



a) Teeth concrete with jaws. 



TrogonopMs Kaup, Fitz., Dum. Anal pores none. Tail conical. 



Sp. Amphisbwna Wiegmanni nob., Trogonophls Wieymanni Kaup, Isis 1830, 

 p. 880, Tab. 8, fig. I, Amphishmna elegans Gekvais, Gueein Magas. de 

 Zool. 1837, Rept. PI. 11; yellow, with red brown, four-sided spots, 

 arranged like a chess-board; this species occurs on the north coast of 

 Africa. 



b) With teeth adhering internally to the margin of jaivs. 



Lepidosternon Wagl. Head short, conical. Anal pores none. 

 Tail i-ound, obtuse. Some larger, irregular scutes, behind the 

 throat. 



Sp. Amphisbcena microcephala nob., Lepidost£rnum inirrocephalum Wagl., 

 Amphisbcena punctata Maxim. Pr. v. Wied (not Bell), Abb. zur Natur- 



