1851 Proceedings of the Zoological Society of London  
It is exceedingly interesting as presenting an entirely new form, different in many particulars from any before observed ; so much so, that I am induced to form for it a new family, to be placed near Ann-&ad@ and Cherviolida, which may be thus characterized :- IPHISADAL Scales of the back, belly, nape and throat smooth, broad, six-sided, transverse, forming a single series on each side of the tail, narrow, lanceolate, elongate, regularly keeled, in rings alternating with each other ; head
more » ... other ; head shielded ; chin shielded ; ear open, circular ; femoral pores distinct. IPHISA. Head depressed, shielded ; anterior frontal single, broad, foursided ; posterior frontals two, small, subtrigonal ; vertebral single, rather elongate ; posterior vertebral two, small, five-sided ; occipital three, larger, middle one narrow, longitudinal ; superciliary shield 3-3, hinder smaller, anterior smallest ; temple with small shields ; labial shields moderate ; rostra1 and mental broad ; chin entirely shielded ; anterior single, transverse, first pair very large, triangular, covering nearly the whole of the chin, second pair small, at the outer hinder angle of the former ; nostrils lateral, in the lower edge of the nasal shield, between it and the labial shield ; eyes large, lateral ; eyelids scaly?; ears circular, open ; nape, back, throat and belly covered with two series of broad, smooth scales ; sides rounded, covered with three or four series of six-sided, smooth scales, placed in oblique series ; chest with a collar of five scales, the central one elongate, triangular, the lateral ones four-sided, the outer pair very narrow; preanal shields three, the central one elongate, narrow, subtriangular ; limbs short, weak, covered with broad smooth shields above, the hinder shield beneath ; femoral pores 10-10, distinct, the series nearly united in front of the preanal plates; toes 5-5, unequal, the inner very short, the outer hinder separated from the other by a space like a thumb ; tail elongate, cylindrical, tapering, covered above and below with whorls of narrow, elongate, regular, lanceolate, strongly keeled pointed scales, those of each series alternating with those that succeed and follow it.
doi:10.1111/j.1096-3642.1851.tb01129.x fatcat:f2qm5qe2qffhbfbopxvd6be25i