108 PROCEEDINGS OF THE ACADEMY OF 



Fifteen series scales, seven superior, nine inferior labials ; 

 two, one, or no preocular; six genials, with laterals, 

 vertebrals broader, body shorter ; brown, with continu- 

 ous or alternate narrow, dark brown yellow-edged cross 

 bars ; belly with few lateral spots, top of head with five 

 dark light-edged ocelli mikanii. 



Fifteen series scales, vertebral little larger; seven superior, 

 eleven inferior labials ; six genials, no laterals ; less com- 

 pressed ; yellow, black specked, with broad black equal 

 annuli, not quite complete, on the bellj', and dorsal black 

 spot between; head black, varied above, belly much 



black spotted oreas. 



/?/?. Three or four postoculars. 



Vertebral series larger, no preoculars ; ten superior and infe- 

 rior labials, six genials with laterals ; fifteen rows 

 scales ; light brown with a series of blackish cross 

 bands, very broad anteriorly, much narrower and more 

 Humerous on most of the length ; a series of brown 



spots below IN^QUIFASCIATA. 



Group III. Scales smooth, vertebral series larger; 

 anterior genials forming a long pair as in other ser- 

 pents, preceded by one pair labials. [Petalogna- 

 thus D. B. 

 Fifteen rows scales, dorsal series not reaching occipitals ; no 

 preoculars, two postoculars ; four genials, no laterals ; 

 thickly brown dusted, with brown yellow edged dorsal 

 cross bars which are or are not continuous with a late- 

 ral series which is continued on a portion of the gas- 

 trosteges ; below yellow nkbulata. 



Group IV. Scales smooth, dorsal series not larger ; 



anterior genials elongate, colubriform, preceded by 



one pair of labials. 



Thirteen rows of scales, no pre-, two postoculars ; seven 



superior, eight inferior labials ; three pairs genials, 



without laterals ; black with yellow rings continuous 



on the belly but not on the anterior parts above ; yellow 



scales black edged ; temple and nape yellow anthkacops. 



Group V. Scales equal, smooth ; genials short, 

 broad, preceded by two pairs of labials. 

 Fifteen rows scales, one preocular and a subloreal, three 

 postoculars, nine superior, eleven inferior labials; slen- 

 der, compressed ; black with narrow yellow annuli ; 



chin all black, a yellow collar bkevifacies. 



Group VI. Scales equal, smooth ; genials short, 

 broad, preceded by one pair inferior labials. 

 Form little compressed, scales in fifteen rows ; eleven 

 superior, eight inferior labials ; no preoculars, two 

 postoculars ; four genials without laterals ; yellow 

 brown, with three rows black, yellow edged subquad- 

 rate spots, which unite in front and become also 



longer; head spotted, small spots on sides of belly turoida. 



Group VII. Scales equal, several dorsal series 



keeled ; first pair of genial plates short, preceded by 



one pair of labials onlj'. [Tropidodipsas Gthr.) 



Head more elongate, scales in seventeen rows; two anterior, 



two posterior oculars ; three pairs genials, seven upper 



[March, 



