1879.1 ICope. 



Color above dark mulberry-brown with numerous, very faint small pale 

 spots. On the sides the ground color becomes paler, and the light spots 

 much more distinct. Limbs banded with rufous. Lower surfaces uniform 

 yellowish. 



Length of head and body, .022 ; of head to angle of jaws, .007 ; width of 

 head at angle, .009 ; length of hind limb, .030; length of hind foot, .014. 

 No. 9888. 



This species has some resemblance to the Syrrhophus leprus from Te- 

 huantepec. 



9. Cystignathus microtis, sp. nov. 



Like all the Mexican species of this genus, this one has short series of 

 vomerine teeth behind the posterior nares, and a discoidal fold of the ab- 

 dominal integument. It differs from the C. melanonotus Hallow, in not 

 having a dermal margin of the posterior digits. The dorsal skin does not 

 present any glandular folds such as occur in C. labialis and C. gracilis. 

 The muzzle is not elongate, and is convex in transverse section, the can- 

 thus rostralis being absent. The limbs are very stout, especially the femur, 

 as in C. melanonotus, but not elongate, the heel only reaching the posterior 

 border of the orbit. The eye is not large, and the tympanum's diameter 

 is only two-fifths of its length, a characteristic peculiarity of the species. 



Color above dark brown, with a blackish pale edged triangle between 

 the eyes, with its apex directed posteriorly. A dark light edged spot be- 

 low the front of the orbit. Tympanum and a streak behind it, blackish. 

 No light stripe on the upper lip. Belly dirty white gray, marbled ante- 

 riorly. Throat dark brown ; limbs light brown below. 



Length of head and body, .028 ; length of hind leg, .038 ; length of hind 

 foot, .020 ; length of head, .009 ; width of head behind, .009. 



Three specimens. Nos. 9906, 9908-9. 



10. Raivi mon'ezunKe Bd. No. 9891. 



11. Bana halecin r i Kahn. var. No. 9900. 



Lacertilia. 



12. Sseloporus dugesi Bocourt. Nos. 9885, 9893, 9994-5. 



13. Sceloporus formosus Wiegm. var. Nos. 9S76, 9878. 



14. Sceloporus torquatus Wiegm.. var. 9877. 



15. Sceloporus spinosus Wieg. Eupataro. 



16. Sceloporus grammicus Wieg. Eupataro. 



17. Holbrookia maculata B. and Gk; sub-species approximans Baird. 

 This is the Mexican form of 72". maculata, and has not been found within 

 the limits of the United States. Nos. 9894, 9903. 



18. Cnemidophorus communis Cope. Nos. 9879, 9882-7, 9901-2. 



Ophidia. 

 Conopsis nasus Gthr. 



19. Ogmius varians Jan. (Oxyrhiui) Ogmius Cope, Proceed. Amer. 

 Philos. Soc. 1869, p. 162. No. 9913. 



20. Adelophis copei Duges MS., gen. et sp. nov. 



Char. gen. Allied to Tropidocloniwn. Scales keeled ; anal single ; 



