ox THE BATRACHIA AND REPTILIA OF COSTA RICA. 133 



rate ; preocular scarcely reaching frontal ; postoculars two ; temporals 1-2 ; nasal 

 plate not elongate. Superior labials nine, fifth and sixth entering orbit. Inferior 

 labials ten, six in contact with geneials, of which the posterior pair is the longer. 

 Parietals bounded by small scales behind. Gastrosteges 146, anal divided ; uro- 

 steges 142. Total length .405; of tail .155 m. Golden-brown above, or yellowish- 

 green without the epidermis ; vertebral line yellow on one row of scales for the 

 anterior half of the body. Below blue, fading to yellowish on the gular region. 

 A black band from eye along top of last superior labial. 

 From the low country. 



81. Leptophis saturatus, Cope, sp. nov. 



Scales in fifteen rows, one on each side of the median vertebral, weakly keeled ; 

 scales of the lateral rows wider than those of the median dorsal series. Gastro- 

 steges not angulate. Head short and wide, eye large, its diameter equal to the 

 length of the muzzle, or the width of the frontal with one superciliary plate. 

 Internasals and prefontals wider than long, the frontal, superciliaries, and parietals 

 wide for the genus, the last openly emarginate behind. Nasals not elongate, the 

 anterior the higher ; loreal present, nearly twice as long as high ; orbitals 1-2, 

 preorbital nearly reaching frontal. Temporals 1-2, the anterior large. Labials 

 nine above, the fifth and sixth bounding the orbit ; ten inferior labials, six in con- 

 tact with the geneials. Gastrosteges 160; anal divided; urosteges 133. 



M. 

 Total length . . . . . . . . . . .880 



Length of tail .......... .340 



" to rictus oris ......... .022 



" to orbit .......... .007 



Color in spirits, indigo blue, very dark on head and vertebral rows of scales. 

 Lips dark green, a blackish shade above the labial plates from the orbits posteriorly. 

 The last maxillary tooth of this species is much longer than those that precede 

 it without interval. 



The wide and depressed head as well as the smooth scales and color, distinguish 

 this species from the L. mexicanus, D. B. The muzzle, and hence the scuta, are 

 less elongate than in the L. depressirostris. Cope. 

 One specimen from Sipurio. 



82. Leptophis mexicanus, Dum. Bibr. 



Valley of Costa Kica ; Dr. Van Patten. 



83. Leptophis pr^stans, Cope, Proceed. Academy Philada. 1868, p 809. 

 Sipurio. 



34 



