172 



ON THE REPTILIA OF PERU. 



neck, and two similar to them along each side, 

 each shoulder. 



Total length (tail reproduced at end) 

 Length to vent . 



" to axilla 



" to meatus of ear 

 Width of head behind 

 Length of hind limb . 



" of hind foot . 



A strong vertical fold in front of 



M. 

 . .175 



. .070 



. .032 



. .015 



. .013 



. .047 



. .021 



row flap of skin, which supports 



The ear is partially closed in front by a nan 

 several flat, acuminate, dermal denticles, of which two are most prominent. The 

 limbs are rather short, the fore limb reaching the end of the muzzle, the hind limb 

 not quite reaching the ear. 



Color above light grayish-brown, with about eleven transverse series of small 

 brown spots. Back also with distant yellow speckles ; head light and dark brown 

 speckled. Under surfaces yellowish-white, except the thoracic amfugular regions, 

 which are black. 



29. Microlophus inguinalis, sp. nov. ; Microlophus lessonii, Var. Dum. Bibron, Erp. Gen., iv. 



p. 341. 



Dorsal scales small, flat, a median larger row, scarcely elevated on the nape 



and tail, flat on the back. Two lateral folds from tympanum to groin ; a prehu- 



meral fold nearly meeting its mate on the thorax ; a series of four or five denticu- 



lations in front of the ear. Parietal shield large, broader than long, Two rows 



of frontals (superciliaries), which unite on top of the muzzle in a circular rosette 



of seven smooth shields inclosing a small one in the centre. Four rows of scales 



between the nasal plates. One row of large, and one or two rows of small loreal 



scales. Four or five rows of infralabials, the gulars abruptly distinguished from 



them, and considerably smaller. The end of the external digit of the fore limb 



reaches the end of the muzzle, and the longest hinder toe reaches the nostril. 



M. 

 .151 



.057 



.025 



Length (tail entire) 



" to vent . 



" to axilla 



" to ear 



" to orbit . 

 Width of the head behind 



.013 

 .005 

 .011 



