1906.] IN MEXICAN LIZARDS. 371 



the typical G. tessellatus from Oedros Island, restricts the supposed 

 differences of his C. inultiscutatus to a mere individual variation. 



Further, a specimen (text-fig. 64 A) obtained by Dr. Meek at 

 El Paso fits exactly the C. tessellatus multiscutatus. Length 

 93 mm. Humerus with 7 to 8 scales ; femur with 7 ; pores 22/20. 

 The throat and collar are pale blue, both with scattered jet-black 

 spots. Chest white, with scattered black spots. Belly white to 

 greenish yellow, here and there with half a black scale. Thighs 

 below greenish yellow ; tail below with blackish spots. Doi'sal 

 surface of black ground-colour with 4 pairs of light stripes, of 

 which the first is broken up into yellow spots and bars, while the 

 others are partly broken and zigzag. On the shoulders and neck 

 the general colour is grey with about six rows of black spots, 

 while the last traces of the former pale stripes are completely 

 lost. Thighs above and behind with large greenish-yellow spots 

 on bluish ground. 



As a peculiarity I mention in this specimen the existence of 

 three enlai-ged scales across the lower eyelid, exactly as those 

 figured by Cope, p. 584, in tessellatus rubidus. The artist no 

 doubt saw correctly, but the author does not mention this peculiar 

 arrangement. 



Onemidophorus maximus Cope. 



From Lower California : Cape St. Lucas, La Paz, and the little 

 island of Espirito Santo. " The largest species of the genus " ; 

 Boulenger retui^ns the largest as of 120 mm. 



Humeral row^ 4-5 in Cope's key, p. 568, but in the text, 

 p. 571, are stated 6-8, Anterior surface of forearm with 4 rows ; 

 posterior surface granular, but according to the figure with 

 slightly enlai'ged granules on mid-arm. Femur with 7 rows; but 

 in the figure I should certainly count 9. Pores 24-25 ; in the 

 figure only 21 or 22. The young are said to have a median light 

 stripe and two paired stripes on blackish ground. Each of the 

 fields with two rows of pale spots. The adult are olive- brown 

 with three brown stripes on each side as broad as the fields, " and 

 so brokeir by spots of the ground-colour as to resemble series of 

 confluent brown variations." " Gular region blackish varied ; 

 abdominal shields black- tipped." 



Apparently these specimens from the southern part of Lower 

 Califoi'nia constitute a large, coarsely marbled, and rather dull- 

 coloured race of C. tessellatus, 



Cnemidophorus rubidus Cope. 



From S. Margarita Island, West Coast of Lower California. 

 Length 100 mm. Humeral rows 5-6 ; femoral rows 8-9, Pores 

 22, 



The young have traces of six stripes on light brown ground, and 

 the fields are cross-barred with olive and black, as in the adult of 

 C. gularis tnariarum. 



Pkoc. Zool, Soc— 1906, Yol. I. Ko. XXY. 25 



