1884.] 189 I Cope. 



three. Symphyseal is broadly truncate behind. The postsymphyseal 

 (geneial) is a longitudinal oval, and each side is equally divided between 

 the first and second labial and the postgeneial. The latter is separated 

 from the second and third labials by a triangular scute. Preanal pores four ; 

 preanal scuta eight, the median much longer fore and aft. Annuli, 196 

 on the body, and 18 on the tail. The latter is compressed at the extremity 

 so that the tip is a vertical oval. The last half dozen grooves are deep 

 and the scales are represented by semi-globular bosses, as in the genua 

 Rhineiira. 



Total length, M. .315 ; of head to canthus oris, .0095 ; of tail, .030. 

 Color above, lead color, with a mulberry shade ; below, light yellowish. 



Aporarchos prunicolor, gen. et. sp. nov. 



The genus has been defined in the key under the head of the species 

 Anops kingii. It is simply Amphisbaena without preanal pores. 



The only specimen on which the species rests is of smaller size than 

 those which represent the species enumerated in the above table, except- 

 ing the A. occidentalis, which is the smallest of the genus. 



Rostral plate scarcely visible from above ; common suture of nasals 

 short ; nasofrontals each as long as bi'oad ; frontals each longer than broad ; 

 a pair of well distinguished square parietals. Labial, 3-3, the third reach- 

 ing the ocular, so that there is no subocylar. No superciliary or preorbital 

 plate. Three plates in the row from catithus oris to frontal plate. Sym- 

 physeal broader than long, truncate posteriorly ; postsymphyseal broad as 

 long, subcircular, each half bounded by thepostgeneial, and first and second 

 labials to an extent represented by the order of mention. Last inferior 

 labial twice as long as deep. Annuli 186 on the body and 23 on the tail. 

 Preanal scales eight, the row preceded by a groove which is wider than 

 the others. Tail obtuse, caudal annuli entirely-smooth. 



Total length, M. .214 ; of head to canthus oris, .006 ; of tail, .029. 



Color, uniform plum-color above and below, excepting the lower jaw, 

 chin and part of pectoral region and a postanal crescent, which are white. 

 All the grooves of the inferior surface are white also, so that the animal 

 has a latticed appearance below. 



Pantodactylus bivittatus Cope. Proceeds. Academy Philada., 1863, 



p. 103. 

 ACRANTUS viridis Merr. Numerous specimens. 

 Tejus tequexin Linn. 

 Opheodes striatus Wagler. 

 Phalotris melanopleurus, sp. nov. 



The genus Elapomovphus of Wiegmann, as defined by Dumeril and 

 Bibron, was divided by me in 1863 into three genera, one of which 

 retained the original name, and the other two received the names of 

 Phalotris and Apostolepis. Numerous 'species have been since added to 



