CROCODILIANS, LIZARDS, AND SNAKES. 



887 



part of the gastrosteges. A median subquadrate blaclc spot on the 

 belly, opposite the dorsal spots. Top of head reddish, truncated behind 

 by a transverse black border which crosses just posterior to the occip- 

 ital plates, and is followed by the first interval of yellowish ground 

 color. A yellowisli band between eyes, which is continuous with a 

 similar band which extends backward and downward, to the light half 

 collar. It isolates below it a black band, which extends from the eye 



Fig. 211. 



Osceola doliata collaeis Cope. 



= 1. 



Elmira, New York. 



Cat. No. 2433, U.S.N.M. 



to the angle of the mouth, along the superior edge of the labial plates. 

 Other labials yellowish, with black spots on the mutual sutures. A 

 brown cross baud on prefrontal plates. 



Rostra] plate not depressed or prominent. Loreal well developed; 

 temporals 2-2-3. Postgeneials half as long as pregeneials. Scales 

 rather wide and obtuse. 



This subspecies is intermediate between the 0. d. doliata and the 0. 

 d. clerica, as may be learned from the analytical table. In its head 

 coloration there is variation in the development of the interorbital 

 light cross band. It is complete in Cat. Nos. 2433 and 5449 only; in 

 Cat. Nos. 2192 and 7849 it is represented by large superciliary spots, 

 and in Cat. No. 9745 by small ones. The yellow postocular band is not 

 complete in Cat. ISTo. 7849. In Cat. No. 2433 the yellow half collar is 

 interrupted on each side by the slight contact of the dark borders of 

 the head color and tlie first saddle si)ot, showing how the neckbands 

 of the two subspecies clerica and triangida are formed. 



Osceola doliata collaris Cope. 



