47, nOLBROOKTA. 209 



3. Holbrookia elegans. 



Holbrookia elegans, Bocourt, Miss. Sc. Mex., Rept. p. 1G4, pi. xvii. 

 bis. fiff. 8. 



D" 



Supraocular scales subequal ; occipital as long as broad. Dorsal 

 scales keeled. Tibia longer than the distance between the end of 

 the snout and the gular fold. Greyish above, with four longitudinal 

 series of angular brown spots on each side of the vertebral line ; 

 those of the upper series largest and white-edged ; a blackish streak 

 along the hind side of the thighs ; lower surfaces yellowish, no 

 lateral or caudal spots. 



Mazatlan. 



4. Holbrookia maculata. 



Holbrookia maculata, Girard, Proc. Am. Assoc. Adv. Sc. iv. 1851, 



p. 201, and in Stanshury^s Exped. Gr. Salt Lake, p. 342, pi. iv. 



figs. 1—3 ; A. Diim. Arch. Mus. viii. p. 546 ; Bocourt, Miss. Sc. 



Mex., Bept. p. IGl, pi. xvii. bis. tig. 7 ; Cope, Bull. U.S. Nat. Mus. 



no. 17, 1880, p. 15. 

 approximans, Baird, Proc. Ac. Philad. 1858, p. 253 ; Bocourt, 



I c. p. 163. 



Head relatively a little larger than in H. texana ; upper head- 

 scales more convex ; occipital as long as broad, or a little broader 

 than long ; upper labials very narrow and very oblique, five or six. 

 Dorsal scales not (|uite so small, granular or subhexagonal, smooth 

 or feebly keeled. Edge of the gular fold strongly denticulated. 

 Limbs shorter ; the adpressed hind limb does not reach the ej'e ; 

 foot measuring one half to two thirds the distance between axilla 

 and groin. Eleven to fifteen femoral pores on each side. Male 

 with enlarged postanal scales. Tail subcylindrical, shorter than 

 head and body. Grey above, vertebral region frequently lighter, 

 with a series of large darker spots on each side ; sometimes with 

 scattered whitish dots ; one or two black spots on each side of the 



inilHin. ruillim. 



Total length 104 Fore limb 24 



Head 12 Hind limb 39 



Width of head 11 Tail 49 



Body 43 



Southern United States ; North Mexico. 



a~h. 9 . Cherokees, Tennessee, 



c-d. 5 . Kansas. 



e-f- 6 2- N. Texas, E. D. Cope, Esq. [E.]. 



ff-h, i. 6 2' Mexico, 



5. Holbrookia lacerata. 

 Holbrookia lacerata. Cope, Bull. U.S. Nat. Mus. no. 17, 1880, p. 15. 

 Allied to //, maculata. Tail cylindrical, a little longer than the 



VOL. II. p 



