ON THE REPTILIA OF PERU. 181 



TO. Liophis temminckii, Schleg. ; Tseniophis tantillus, Girard. 



71. Liophis pygm^eus, Cope, Proceed. Academy Phila. 1868, p. 103. 



72. Tantilla capistrata, sp. nov. 



Ocular plates 1-1 ; labials seven above, the seventh the largest, the third and 

 fourth bounding the orbit. The postnasal smaller than the prenasal, well sepa- 

 rated from the short preocular by the prefontal, which touches the second labial. 

 Rostral not very prominent ; frontal wide, much shorter than the large parietals. 

 Temporals 1-1, long and narrow. First pair of inferior labials in contact, post- 

 geneials short. Scales of body in fifteen series. Gastrosteges 139; anal divided ; 

 urosteges 71. 



All the scales above the second row are brown-bordered ; below this row white. 

 Head above black, except the muzzle, which is white to the line of the preocular 

 plate ; a large labial spot behind the eye, and the hinder border of the parietals. 

 A black half collar connected with the black crown by a longitudinal bar. 



Total length .136; of tail .035; to rictus oris .005. 



Valley of Jequetepeque, Peru. 



73. Tantilla melanocephala, Schl. 



74. Helicops polylepis, Gthr., Ann. Magaz. Nat. Hist. 

 The Solimoens. 



75. Helicops angulatus, Linn. 

 From Iquitos on the Maranon. 



76. Rhabdosoma poippigii, Jan. Arch., p. Zoologia Modena II. 1862, 11. 



77. Rhabdosoma badium, Dum. Bibr. 



From the Solimoens. Several color varieties. 



PROTEROGLYPHA. 



78. Elaps narduccii, Jan. 



79. Elaps imperator, Cope, Proceed. Academy Philada. 1868, p. 110. 



A strongly marked subspecies, characterized by the continuation of the black 

 rings entirely round the body, and of the black color which replaces the red rings 

 to the gastrosteges. Also by the almost entire black color of the head, and the 

 dusky shade of the lighter parts of the lower surfaces. 



From the Solimoens. 



46 



