"No. 39.— 1889.] 



ZOOLOGICAL TABLES. 



199 



1. — Body stout.; tail rather short. 10 to 13, Aspidura, 



all species. 



2. — Body slender. 11 H. ceylonensis. 



D = 40 Cerberus rhyncops. 



Head with elevated crown ; snout high ; body stout ; 

 tail rather compressed at root. 



£ = 27 Dendrophis pictus. 



Body elongate, somewhat compressed ; head elongate, 

 distinct ; belly keeled ; tail long. 



1. — Body very elongate and slender. 27 D. pictus ; 28 D. 



caudolineatus. 



2. — As in e\ but the snout is depressed, truncated. 39 C. 



ornata. 



3. — As in e l , but the body is moderately elongate. 17 H. 



nympha. 



p — 37 Dryophis mycterizans. 



Body and tail exceedingly elongate ; body compressed ; 

 head long, very distinct from neck ; snout produced into 

 an elongate flexible appendage ; sides of muzzle deeply 

 grooved. 37 D. mycterizans ; 38 D. pulverulentus. 



,Q = 35 DlPSAS CEYLONENSIS. 



Body and tail exceedingly elongate ; body compressed ; 

 head very distinct, with a short blunt snout. 35 D. 

 ceylonensis ; 36 D. forstenii. 



= 57 VlPERA RUSSELLII. 



Body robust ; head very distinct from neck ; snout 

 triangular. 



1. — Snout obtuse ; tail short, 57 V. russellii. 



2. — As in h\ but snout slightly turned up, with a sharp 



canthus rostralis. 59 A. hypnale. 



3. — Snout very short ; tail moderate, prehensile. 60 T. 



trigonocephalus. 

 16—91 E 



