19. AGAMA. 



357 



l-p, q,r. S & yg. 



s. 2. 



t. 6. 



u. Hgr. 



V. Several spec. : 



$,&hgr. 

 tc. Yg. 

 •r. d. 



a-8. d & hgr. 

 c. Skeleton. 



W. Africa. 



Senegal. 

 Gambia. 

 Sierra Leone, 

 c?, Ancober River, Gold 

 Coast. 

 Ambriz, Angola. 

 Carangigo. 

 Benguela. 

 S. Africa. 



Major Burton and Capt. 

 Cameron [P.]. 



Dr. Welwitscb [P.]. 

 J. J. Monteiro, Esq. [C.]. 

 Sir A. Smith [P.]. 



26. Agama bibronii *. 



Agama colonorum, (non D. 8f B.) Guich. ExpL Sc. Alff., Mept. p. 7 ; 



Strauch, Erp. Alg. p. 27. 

 bibronii, A. Dtim. Cat. Meth. Rept. p. 101, and Arch, du 



Mus. viii. p. 674; Boettg. Ahh. Senck. Ges. xiii. 1883, p. 127. 

 colonorum, var. impalearis, Boettg. Abh. Senck. Ges. ix. 1874, 



p. 132. 



Head moderate, somewhat less depressed than in A. colonorum. 

 Nostril tubular, directed laterally and posteriorly, pierced just below 

 the can thus rostralis. Upper head-scales smooth or indistinctly 

 keeled ; a very slightly elongate scale on the middle of the snout ; 

 occipital enlarged ; labials very small, eleven to fourteen upper and 

 as many lower ; sides of head and neck with groups of spines which 

 are slightly longer than in A. colonorum ; ear-opening entirely 

 exposed, larger than the eye-opening. Throat strongly plicate ; no 

 regular gular pouch. Body depressed, covered above with large 

 rhomboidal, mucronate, imbricate scales with strong keels converging 

 towards the vertebral line ; these scales scarcely smaller tban the 

 caudals, numbering about forty from the origin of the fore limbs to 

 the origin of the hind limbs (counting on the vertebral line) ; a 

 slight nuchal crest ; no dorsal crest ; ventral scales much smaller 

 than the dorsals, smooth ; sixty-two or sixty-four scales round the 

 middle of the body. Limbs shorter than in A. colonorum, digits also 

 shorter ; tibia as long as the skuU ; third and fourth fingers equal ; 

 third and fourth toes nearly equal, measuring the distance from the 

 posterior border of the eye to the nostril ; fifth toe extending beyond 

 first. Tail about twice as long as the distance from gular fold to 

 vent, round in the female, feebly compressed in the male ; scaling 

 as in A. colonorum. Male with one [to three] row of anal pores. 

 Coloration as in A. colonorum. 



* Described from Algerian specimens in M. Lataste's collection. 



