REPTILTA AND BATRACHIA. 
8 Kept. 
chiefly on the presence or absence and the structure of the os teo- dermal 
plates, a character not used before for the division of this largo family. 
39 genera are divided into two large groups, each of which is again split 
into numerous groups of minor importance. Miss. Sc, Mex., Zool. iii. 
pp. 476-482. 
I. Skin with osteo-dermal plates, Aspidoscincus. 
A. These plates regular, with longitudinal canals anastomosing in 
the middle with a transverse one. 
1. Three canals anteriorly ; a pair of supero-nasals. Euprepi- 
sidcG (gg. EuprepiSy Mahuya^ OtosauruSy Riopay Hagrid). 
2. Three canals anteriorly ; no supero-nasals. Eumorphuskltc 
(gg. Tropldolepismay Liolepisma). 
3. Four canals anteriorly ; a pair of supero-nasals. Scincidoi 
(gg. ScincuSy GongyluSy EumeceSy AmpJiiglossuSy Morethia, 
SepSy Scelotes). 
4. Four canals anteriorly ; no supero-nasals. Somadrosidce 
(g. Keneuxia). 
B. The plates irregular ; a transverse canal anastomosing with the 
longitudinal ones ; no supero-nasals. 
1. Rostral normal. LygosomidcBy (gg. Lygosomay Mocoa^ 
lUnuliay Omolepiday IleteropuSy AhlepharuSy Menetitty Crypto- 
hlepharuSy Leristay TetradactyluSy Soridid). 
2. Rostral large. Acontiadce (g. Acontias). 
C. The plates irregular, without transverse canal ; the principal 
canals radiating from the centre. Diploglossidcc (gg. 
Diploglossusy CelestuSy Sauresiay OpModeSy Anguis.) 
II. Skin without osteo-dermal plates, Anaspidoscincus. 
A. Body normal, covered with large scales ; infra-maxillary scutes 
much developed. Tretioscincidm (gg. 2'retioscincuSy Gym- 
nophthalmuSy Epaphelus). 
B. Body much elongate, covered with small, keeled scales ; no 
anterior limbs. Pygopidce (g. Pygopus). 
C. Body much elongate, covered with small, smooth scales ; no 
limbs ; ear-openings. Lialisidce (g. Liasis). 
D. Body much elongate, covered with small, smooth scales ; no 
limbs; no ear-openings; rostral small. Aniellidce (g. 
Anielld). 
E. Body much elongate, covered with small, staooth scales ; no 
limbs ; no ear-openings ; rostral large. Typhlinidce (g. 
Typhline). 
Euprepis perroteti. Remarks upon a variety of this lizard from 
Socotra ; Blanford, P. Z. S. 1881, p. 469. 
Mdbuya cepediiy Gray, = Tillqua ceneay Gray ; O’Shaughnessy, P. Z. S. 
1881, p. 236. 
Scincus conirostriSy sp. n., Blanford, Z. c. p. 677, Persia. 
Eumeces obsoletus (Baird & Gir.), redescribed by Bocourt, Miss. Sc. 
Mex. p. 443, pi. xxii.a, fig. 4, & xxii.dJ, fig. 4. E. obtusirostrisy sp. n., 
Bocourt, Z. c. p. 441, pi. xxii.tZ, fig. 1, Texas. 
