GONYOCEPHALUS 133 



GONYOCEPHALUS SOPHI^E (Gray) 

 PLATE 9, FIG. 2 



Tiaris bellii (non Dumeril and Bibron) Gray, Cat. Liz. (1845) 239. 



Tiaria sophise Gray, Cat. Liz. (1845) 240. 



Tiaris petersii Gunther, Zool. Rec. 4: 136. 



Tiaris sophise Gunther, Proc. Zool. Soc. London (1872) 593, pi. 37, 



fig. C; F. MiJLLER, in. Nachtr. Cat. Herp. Samml. Basel. Mus. 



(1883) 23. 

 Gonyocephalus sophise Boulenger, Cat. Liz. Brit. Mus. 1 (1885) 288; 



Taylor, Philip. Journ. Sci § D 12 (1917) 371. 



Description of species. — (From No. R117, Bureau of Science 

 collection; collected in Negros, by C. S. Banks.) (Adult fe- 

 male.) Snout as long as diameter of eye, not sloping gradually 

 from top of orbit to end of snout, but sloping rather abruptly 

 to above nostril, then continuing parallel to line of mouth ; super- 

 ciliary ridge and canthus rostralis (which is confluent with it) 

 projecting; tympanum distinctly smaller than eye opening, its 

 distance from orbit equal to that of nostril from orbit; height 

 of head at eye equal to distance from center of eye to end of 

 snout; rostral well developed, larger than labials, bordered be- 

 hind by four regular scales, the median largest; separated from 

 rostral by a single scale, nasal fairly large with nostril pierced 

 through its center; a row of somewhat prominent scales below 

 and behind orbit, with a short row extending from orbit to above 

 tympanum; orbital scales very small, those on supraocular re- 

 gion largest and strongly keeled ; supraorbital region delineated 

 by two curving rows of strongly keeled scales; an inverted Y- 

 shaped series of scales on snout, quite distinct; a few distinctly 

 enlarged scales between eye and upper part of tympanum; ab- 

 dominal scales strongly keeled; a few sHghtly enlarged keeled 

 scales behind and on angle of jaw, not prominent. Nine upper 

 labials with a row of slightly enlarged scales above them, largest 

 anterior to orbit; a row of scales bordering orbit below rather 

 trihedral; only three rows of scales between upper labials and 

 orbit ; mental small ; ten and eleven lower labials ; two diverging 

 series of chin shields, only the first pair touching rostral or la- 

 bials and in contact ; scales on chin and throat small, the median 

 longitudinal series slightly enlarged, all strongly keeled; gular 

 sac small, appearing as a slight fold on neck ; nuchal and dorsal 

 crests continuous, formed of lanceolate spines with smaller spiny 

 scales along sides of crest; height of crest on neck nearly equal 

 to length of snout ; dorsal crest gradually diminishing in size, but 



