46 A SYNOPSIS OF THE SPECIES OF 



tessellatus, except that there are here no individuals with the stripes entirely oblit- 

 erated, and complete transverse stripes posteriorly. (Such specimens are the C. g. 

 scalaris; see below.) The femoral pores are generally eighteen, but some have six- 

 teen, seventeen and twenty. In eleven of the specimens now before me, seven have 

 five infralabials, and four have six. These numbers do not coincide with the color 

 types. 



CnemidopJwrus gularis angusticeps Cope. -^ 



Boulenger, Catal. Liz. Brit. Mus., II, 1885, p. 366. 



CnemidopJwrus angusticeps Cope, Proceeds. Amer. Pliilos. Soc, 1877, p. 95. 



This large form is easily recognizable by its p3culiar coloration, and by the very 

 narrow parietal plate, which is about three times as long as wide. Four specimens 

 are in the U. S. ^National Museum from Yucatan. 



Cnemidopliorus gularis mariarum Gthr. 



Cnemidophorus mariarum Giialh., Biologia Centr. Amer. Kept., p. 38, PI. XX. 



This also large form is distinguished from the other subspecies by the larger num- 

 ber of rows of its femoral plates, and by the coloration. In the young the dark spaces 

 between the light stripes are crossbarred with black instead of a light color as in the 

 other forms, and the result is crossbars on the sides in the adults, on the disappear- 

 ance of the stripes. The hind legs are covered with large i*ound yellow spots. The 

 color pattern of this form corresponds with the Lacerta muralis maculostriata of 

 Eimer. 



Two specimens are in the U. S. National Museum, one from the Tres Marias 

 islands, the typical locality, and the other of uncertain origin. 



Cnemidopliorus gularis communis Cope. 



Cnemidophorus communis Cope, Proceeds. Amer. Pliilos. Soc, 1877, p. 95. 



This subspecies reaches a larger size than any of the others of the C. gularis, 

 and its peculiar coloration of small (or sometimes large) yellow spots on a dark oliv^e 

 ground, gives it a very distinct appearance. This form is identified with doubt with 

 the Cnemidophorus mexicanus of Peters by Bocourt. What Peters' species is I have 

 been unable to ascertain. 



About forty specimens were sent to the l^ational Museum from Colima, Western 

 Mexico, by J. Xantus. 



