472 Bulletin American Museum of Natural History [Vol. XLI 



17. Verticaria caerulea, new species 



Type.— A. M. N. H. No. 5517. Collector, C. H. Townsend, Albatross Expedi- 

 tion, April 5, 1911. 



Paratypes.— A. M. N. H. Nos. 5516, 5518-5520. 



Type Locality. — Carmen Island, Gulf of California, Mexico. 



Diagnosis. — Bearing in general close resemblance to Verticaria sericea (Van 

 Denburgh), of San Jose Island, but with longer muzzle, somewhat shorter hind legs, 

 frontal not in complete contact with second supraocular (because of interposition of 

 granules), lighter general and dorsal coloration, and bright blue color not only ven- 

 trally but high laterally on head and neck, body, extremities, and tail, as well as on 

 dorsal aspect of tail, at least distally. 



Measurements of the Type.— Total length, 183 mm.; head and body to anus, 

 55; tail, 128; head length to gular fold, 20, to posterior margin of ear, 15; head 

 width, 8.5; hind leg, 35. 



18. Cnemidophorus celeripes, 1 new species 



Type. — A. M. N. H. No. 5514. Collector C. H. Townsend, Albatross Expedition, 

 1911. 



Paratype.— A. M. N. H. No. 5515, immature. 



Type Locality. — San Jose Island, Gulf of California, Mexico. 



Diagnosis. — A -very ornamental, conspicuously black and white patterned 

 species of Cnemidophorus above medium size, largest specimen at hand measuring 

 382 mm., tail more than two-thirds total length. It has very fine uniform dorsal 

 scutellation, abdominal ventrals in 8 longitudinal rows (30-32 transverse); fronto- 

 parietals separate; nostril anterior to nasal suture. The nasal is not in contact with 

 the second supralabial; scales on extreme edge of posterior neck fold small at least 

 at middle, the largest exceeding enlarged scales at center of gular region, greatly 

 smaller than scales on chest; 4 supraoculars; 8 femoral rows of enlarged scales, 5 

 tibial, 7 brachial, 3 antebrachial; scales on underside of forearm, posterior aspect, 

 scarcely enlarged; femoral pores 20-23. 



Coloration of adult six wide longitudinal bands of white tinged with olive, 

 alternating throughout their length with 5 wide chains of round black spots more 

 connected anteriorly, separated into the individual black spots posteriorly and in the 

 dorsolateral chains; somewhat irregular tessellated effect of wide black markings 

 along the sides adjoining the ventrals, extending forward over postauricular area; 

 throat marked by 2-4 transverse bands of black, the one between inferior margins of 

 the ear openings particularly prominent; 2 parallel oblique black bars reach down- 

 ward and forward, outlining the sublabials (often interrupted in immature) ; extremi- 

 ties with irregular coarse network of black on the very light olive background; nape, 

 head, and tail more brown; dorsal tail vivid light rose color distally and throughout 

 its length ventrally; the same color on posterior aspects of femur, forearms, ventral 

 surface of hind legs, and in the adult male from the chest between the forelegs for- 

 ward over fold and gular region to the sublabials ; breast and abdominal region blue 

 with 7 longitudinal narrow black lines made by the juxtaposed pigmented margins of 

 the scales. 



'"Swift-footed," with reference to its adaptability for very great speed. 



