318 nriiMA. ITS PKori.H axd phodi'ctioxs. 



large anal sliickls. One labial below the orbit. 31 large rhombic black spots on the 

 back posteriorly, which do not doscenil to the middle of the sides. 



H. KOBU.sr.v, Giintber. 



Scales tubercular. 31 rows ou nc-ck. Two or tlirie labials below the orbit. 

 Yentrabs broad, 310. Trunk with 35 narrow distant black rings, extending round the 

 belly, but sometimes interrupted on the sides and dilated on the back. 



H. c^KErxEscExs, Shaw. 



Scales strongly kecli-d, 37 rows on neck. One labial shield below the orbit. 

 A'entrals bituberculate, 300, and not much larger than the adjoining scales. Yellowish, 

 with 37 to 46 rhombic blackish spots on the back, broadest on the vertebral line, and 

 not descending to the middle of the side, or they may be continued to the belly as 

 faint greyish cross-bands. 



H. SPIRALIS, Shaw. 



Scales tubercubir, 31 rows on neck. Third and fourth labials enter the orbit. 

 Tentrals 320, twice or thrice as large as the adjoining scales. Trunk surrounded by 

 42 to 48 black rings, scarcely broader on the back, and half as wide as the interspaces. 

 A series of vertebral black spots posteriorly. Head black above, with a yellow horse- 

 shoe mark. Belly black. Tail black posteriorly. 



H. MELAXOSOMA, Giintber. 



Head rather small. Scales strongly keeled, 27 rows on neck. Two labials enter 

 the orbit. Tentrals 335, twice as large as the adjoining scales and posteriorly 

 bicarinate. The yellow ground above only shows as narrow vertical stripes on the 

 sides. Black rings CO. Head blackish. 



H. ToiwuATA, Giintber. 



Head small, neck slender. Scales keeled, 35 rows on neck. The fourth labial 

 under the orbit. Ventrals 284, bicarinate, and twice as large as the adjoining scales. 

 Trunk with 50 to 52 blackish-olivc cross-bands, broadest above, and very faint on the 

 belly. Snout black, with a yellow band behind. Lower jaw and throat blackish, 

 belly white. 



* * Tuw jwstoculars. 



H. Belcheri, Gray. 



Scales keeled, 25 rows on the neck. The fourth labial under the orbit. Ventrals 

 simple, 317, more than twice as broad as the adjoining scales. Back brownish- 

 olive, sides and belly yellowish. The bade dark-barred anteriorly, with yellowish 

 interspaces. Head and throat blackish, with yellow horse-shoe on the crown. 



H. ASPEEA, Gray. 



Scales strongly keeled, 30 rows ou the neck. Two labials below the orbit. 

 Ventrals 340, twice as largo as the adjoining scales, and each with several minute 

 tubercles on each side. Dirty yellowish. Back with 47 black rhombic tangential 

 cross-bands, faint on the sides. Crown blackish. 



H. CYANOCINCTA, Daud. 



Scales faintly keeled, 31 rows on the neck. Two labials below the orbit. 

 Ventrals 320 to 426, twice as large as the adjoining scales and bitubercular. Greenish 

 olive on the back, yellowish on the sides and belly. Trunk with 50 to 75 black 

 cross-bands, broader than the interspaces, and sometimes fading on the sides. Very 

 common, and grows to more than 6 feet. 



H. suiiciNCTA, Gray. 



Head rather small and nan-ow. Scales keeled, 23 rows on the neck. The fourth labial 

 under the orl)it. Ventrals 342, not twice as large as the ordinary scales, bitubercular, 

 and posteriorly divided. Trunk with 41 dark cross-bands, as broad as the interspaces, 

 and not reaching to the middle of the sides. A row of spots along lower part of the 

 side. 



