314 



COLTJBRID^. 



Fig. 22. 



Skull of GlypJiodon tristis. 



1. Glyphodon tristis. (Plam XVIII. fig. 1.) 



Glyphodon tristis, Giinfh. Cat. p. 211 (1858). 



Biachvsoma triste, Oilnth. Ann. ^ May. N. R. (3) xi. 1863, p. 24 ; 



Kreft, Sn. Austral, p. 50 (1869) ; Ramsay, Proc. Linn. Soc. N. S. W. 



ii. 1877, p. 113 ; Douglas- Ogilby, Mec. Austral. Mus. i. 1890, p. 97. 



Snout rounded. Eye very small, about half as long as its distance 

 from the mouth. Rostral twice as broad as deep, visible from above ; 

 internasals one half to two thirds the length of the prsefrontals ; 

 frontal once and one fifth to once and a half as long as broad, at 

 least twice as broad as the supraocular, as long as its distance from 

 the rostral or the end of the snout, three fifths to two thirds the 

 length of the parietals ; posterior nasal widely separated from the 

 single prseooular; two postoculars ; temporals 2+2, lower anterior 

 wedged in between the fifth and sixth upper labials ; six upper labials, 

 second or second and third in contact with the prsefrontal, third and 

 fourth entering the eye ; four lower labials in contact with the 

 anterior chin-shields, which are as long as or a little shorter than 

 the posterior. Scales in 17 rows. Ventrals 165-179 ; anal divided ; 



