ON THE REPTILIA OF PERU. 113 



Emerald-green above, white below ; a lateral black band which incloses at the 

 groin a large longitudinal yellow spot. Limbs faintly yellow spotted. Throat 

 with blue chevrons from the lips. 



This species agrees with the M. heterolepis in many respects, although very 

 distinct in coloration. It differs in squamation in the fewer loreals and more 

 numerous muzzle scales. In M. heterolepis, the gular scales are scarcely smaller 

 than the labials, and graduate regularly into them. 



Valley of Jequetepeque, Peru. 



30. MiCROLOPHtrs peruvianus, Less.; 31. lessonii, Dum. Bibr. 



In this species there are four rows of scales between the nasal scales, and the 

 infralabials and gulars are distinguished abruptly. It differs from the other spe- 

 cies here described in the form of the parietal, which is longer than broad, as 

 represented by Lesson (Voyage of the Coquille). 



31. Craniopeltis occipitalis, Bocourt; Aneuporus occipitalis, Bocourt; Mission Scientifique 



de Mexique, p. 215. 

 One specimen from Jequetepeque differs in coloration from that described by 

 M. Bocourt, but not otherwise. It has a broad, brown dorsal band, which is 

 crossed at rather remote intervals by deep brown, narrow cross-bars. Lower 

 surfaces uniform white. Aneuporus, Boa, must yield to the prior Craniopeltis, 

 Pet. 



32. Proctotretus multiformis, Cope, sp. nov. 



Nostrils entirely above the canthus rostralis, laterosuperior in direction. Ex- 

 ternal meatus of ear much larger than eye opening, its anterior border simple. 

 Frontal plate subdivided, the middle portion not divided lengthwise. Three flat 

 scales on front between canthus rostrales ; interparietal small, in contact with 

 superciliaries, and two occipitals of equal size behind it. Four entire, and one 

 divided transverse supraorbitals. Labials f ; four or five large infralabials, sepa- 

 rated from labials by one row of scales in front and two behind. An irregular 

 dermal fold extending posterior to the ear. Scales of side of neck, and scapular 

 and axillary regions, granular. Those of back and sides of body rather small, 

 flat, the dorsals weakly keeled, with smooth ones intermixed, the laterals nicked. 

 Those of the lower surfaces a little larger, not notched. Scales of femur behind, 

 small, flat, of lower side of humerus, granular ; other scales of limbs like the 

 dorsal, on the tibia, keeled. The fore foot reaches the nostril, and the hind foot 

 the axilla. The dimensions of the largest specimen (var. 1) are as follows: — 



44 



