208 Jlfr. Gray on the Genera of Reptiles, [Sept. 



3. Op HIS, Waaler. 



Head with smatl imperforate teeth placed before butnot behind 

 the fangs ; abdominal plates broad; the subcaudal plates two 

 rowed. 



0. Merremi, Wagler, 



** Mouth without fangs ; without auy fovea before the eyes, 



4, Coluber, Lin, Natrix, Lour. Coronella, Laur, 

 Head with eight or nine plates ; nostril simple, solid, convex; 



mouth large, bent down at the angles ; tail beneath wilh all the 

 lower divided ; scales of the back equal. 



*C. albus, Lin, C. brachyurus, Shaw, **Coronella, Laur, 

 C. cervina, Laur, Coluber stolatus, Lin, ***Homalopsis, 

 KuhL H. monilis. Coluber, Lin, 



6. DiPSAs, LflMr. not Leach, Bungarus, Oppel, not Daud, 

 Head large, oblong, with eight or nine plates ; rostral scale, 



simple, solid, convex ; mouth large, angle bent down ; shield 



beneath the tail all divided ; scales of the centre of the back 



hexangular, larger than those of the sides. 



*D. indica, Laur, Coluber bucephalus, Shaxo, *Bungarus, 



Catesbeii, Coluber, Catesbeii, Merrern, 



6. Ahjetulla, Gray, 



Head distinct, oblong, with nine plates, before rounded very 

 blunt, depressed ; rostral plate single, convex, with a concave 

 arch on the labial margin ; mouth large, angles recurved ; sub- 

 caudal shields two rows ; scales of the sides linear, adpressed, 

 those on the centre of the back, forming the dorsal series larger, 

 triangular ; body long, slender. 



A. decorus, Jiob, Coluber decorus, Shaw, A. caerulescens. 

 C. caerulescens, Lin, A. Sagitalis, Coluber Sag] talis, E. W, 

 Grajfs MSS, C. sagittatus, Shaio. A. punctulatus, Gray, 

 N. Holland. Capt, P, P, King, 



1, Macrosoma, Leach, without character. 



Head long with nine plates ; rostral plate single, convex, with 

 a concave excavation on the labial margin ; mouth large, angle 

 bent down ; shield beneath the tail all two rowed ; scales of the 

 back uniform ; body long, slender. 



M. elegans, Leach, Bowdich Ashantee, Coluber elegaus, 

 Shmv, 



8. Passerita, Grcry. Dryinus, Merrern, not Fabr, Natrix, 

 Laur, 



Head with nine plates ; snout moveable, acute, with two 

 scales in front, one before the other ; plates under the tail rowed ; 

 fkngs distinct ; body very thin ; scales hke the genus AheutuUa ; 

 tail very long. 



JD. mysterizans, Merrem, Coluber mysteiizans, Lin, 



