87 



Z. CLIFFORDII. 



Scales 29, smooth. Ventrals 222-236, subc. 74-80. Anal 

 entire. No intercalated crown shields. Quincuncial pattern 

 formed by four rows of elongate spots, the central pair 

 coalescinor. 



Africa ; found in collections from Aden. 



Z. VENTRiMACULATUS, Gray. 



Scales 19, smooth. Yentrals 205-220, subc. 90-102, anal 

 bifid. Labials 9 (5 and 6). Occipitals truncated with small 

 ' semi-circular post occipitals. Yellowish olive, with black 

 cross-bars, and black head-markings ; belly yellowish, later- 

 ally dotted. 



South-Western Asia, found in collections from Aden. 



Z. GRACILIS, Gthr. 



Scales 21, smooth. Ventrals 219, subc. 120, anal bifid. 



Labials 9 (5 and 6) the fourth gives off* the preocular. 



' Yellowish olive, with vertebral row of large round black 



spots, becoming short cross-bars posteriorly ; black fillets ; 



belly yellow, laterally dotted. 



Deccan, Sindh. 



Z. FASCiOLATUS, Shctiv. Plate XIII, fig. 1. 



Scales 21-23, apical grooves. Ventrals 201-229, subc. 

 73-95, anal bifid. Labials 8 (4 and 5). Yellowish reddish or 

 olive brown, with anterior, narrow, white and dark fascio- 



lated cross-bars ; belly yellowish. 



« 



South of India. Common in Mysore and as far West 

 as Coimbatore. A specimen is recorded from Mergui. 



Group III— DRYADINA. 



The compressed body of these snakes, their agility, their 

 numerous ventral shields, and green colour, show that they 

 lead oflf to the true tree-snakes, whilst their head-shields are 

 those of the Coluhridce, 



