LUPEROSAURUS 87 



limbs bordered on each side by a cutaneous fringe, that extending 

 from the vent to the tarsus being much developed; an angular 

 lobe of skin closes the vent in the female. Tail shorter than the 

 body, convex superiorly, flat inferiorly, probably prehensile. 

 Head, back, and limbs covered with extremely minute granules ; 

 rostral large, square ; nostril pierced between the latter, the first 

 labial, and three or four small nasals ; sixteen upper and fourteen 

 or fifteen lower labials; rostral trapezoid, not larger than the 

 nearest labials ; no chin-shields ; throat minutely granulate ; belly 

 covered with small flat juxtaposed granules. Tail indistinctly 

 annulate, covered with small flat granules, rather larger infe- 

 riorly, the lateral keel with a slight fringe formed by projecting 

 elongate scales.'' 



Color. — -'Turplish-brown above, marbled with darker; lower 

 surfaces whitish, belly with narrow transverse brown lines.'' 



Measurements of Luperosaurus cumingii Gray. 



mm. 



Total length 129 



Head 20 



Width of head 17 



Body 63 



Foreleg 23 



Hind leg 30 



Tail, reproduced 46 



Remarks. — The type and the cotype were taken by Cuming in 

 1836-1840, the exact locality now being unknown. No other 

 specimen of this rare and interesting species has been collected. 



LUPEROSAURUS MACGREGORI Stejneger 



Luperosaurus macgregori Stejneger, Proc. U. S- Nat. Mus. 33 (1908) 

 545. 



Description of species. — (From Stejneger.) "Eye nearer the 

 ear than the tip of the snout, its diameter about two-thirds of 

 its distance from the latter; forehead slightly concave; ear- 

 opening small, obliquely elliptic; digits half webbed; a very 

 narrow dermal fold on each side of the legs, slightly better 

 developed along the posterior side of the femur, but not a trace 

 of fold on sides of body or tail ; tail not longer than body (without 

 head) , narrow, slightly depressed, not more flattened underneath 

 than above; body and extremities above and below covered with 

 minute granules, those on the underside of the tail slightly larger ; 

 rostral broad, rectangular, with a median triangular process 

 above, in touch with a small median internasal between two wide 



