440 CHAMiELEOKlIPJ:. 



jtj. Occipital dermal lobes at least indicated ; male with a 

 tarsal process or spur. 



Occipital lobes merely indicated, not 



movable 7. [fracilis, p. 44S. 



Occipital lobes small, movable, forming a 



VA> behind the occiput S. 2"''>*t'i?o^«*% P- -i-l'J- 



Occipital lobes large, in contact on the 



median lino (vl/^ ^' ^^^^P^^> P- ■^^*^- 



2. Body with scattered large tubercles. 



Occipital dermal lobes large ; male with 



a tarsal process 10. monacJius, p. 451. 



K'o occipital lobes ; no tarsal process . . 11. bikeniutus, p. 452. 



E. No dorsal crest ; two series of tubercles or granules along the 

 vertebral line. 



A ventral crest 12. anchietce, p. 452. 



;N^o ventral crest 13. latenxUs, p. 453. 



II. A ventral crest or series of enlarged conical granules ; gular 



crest, if present, not continuous with the ventral ; no occipital 

 dermal lobes. 



A. Body with scattered enlarged tubercles. 



Xo rostral process ; casque much elevated 



posteriorly , 14. verrucosus, p. 454. 



A small rostral process ; casque broad 



and rounded, and not much elevated 



posteriorly 15. jiardalis, p. 454. 



A long rostral process, concave above; 



casque not much elevated, and angular 



posteriorly 17. rJiinoccratus, p. 456. 



B. Body uniformly granular. 



Is'o rostral process ; casque not much 



elevated posteriorly 10. cep7iaJolej)is, p. 455. 



A long, compressed rostral process ; 



casque much elevated and compressed 



posteriorly IS. labordii, p. 456. 



III. A gulur crest ; no ventral crest : no light line from chin to 

 vent ; no occipital lobes ; no rostral appendages : no tarsal 

 process. 



A. Parietal crest not bifurcating ; lepidosis heterogeneous. 



1. Gular crest formed of conical or slightly compressed pointed 

 tubercles. 



Tubercles of the gular crest simple .... 19. melanQcep7ialus,'pA57. 



