218 MR. W. T. BLANFORD ON REPTILES [Feb. I, 



biting longitudinal bands. It may be remarked that the distribu- 

 tion of colour appears to be very characteristic of the different forms 

 of Cylindrophis. But there are also structural peculiarities by 

 vfhich the present form is separated from all previously described. 



In the common species, C. riifus, all the head-shields are propor- 

 tionally shorter, the frontals are broader than long, and the distance 

 between the eyes more than the length of the snout. The ventral 

 shields also are considerably less developed. 



In C. melanonotus the vertical is still longer than in C. lineatus, 

 the sides of that shield behind the lateral angles converging much 

 less rapidly, and the occipitals are much smaller, each being barely 

 half the size of the vertical. The coloration, too, is quite different, 

 the back being uniformly dark brown. 



In C. maculatus, the only other species known, the vertical, as in 

 C. melanonotus, is bell-shaped instead of subtrapezoidal, and the 

 occipitals are proportionally larger, being equal to the vertical in 

 size ; the frontals are sometimes longer than the vertical. The 

 dorsal coloration consists of two rows of large pale spots, one on 

 each side of the median dorsal line, the intervening space being dark 

 brown. 



The different species of the genus may be thus differentiated : — 



A. The width between the eyes is more than the distance from the 



eye to the end of the snout. 



1. Cyli7idrophis i-ufus. Back dark, with imperfect pale rings. 



2. G. melanonotus. Back uniformly dark-coloured. 



B. The width between the eyes is equal to the distance from the 



eye to the end of the snout. 



3. G. maculatus. Back with large pale spots on a dark ground. 



4. G. lineatus. Back longitudinally banded. 



OXYCALAMUS LONGICEPS. 



Galamaria longiceps. Cantor, J. A. S. B. 1847, xvi. p. 910, pi. xl. 



fig- 1- 



Oxycalamus longiceps, Giinther, Kept. Brit. India, p. 199 ; Sto- 



liczka, J. A. S. B. 1873, slii. pt. 2, p. 120. 



Two specimens of this Snake are sent ; they measure 6| and 

 7 inches respectively. The nasal shield is single, as noted by Cantor 

 and Stoliczka ; but it is divided by a suture below the nostril. Ven- 

 trals 143 in one, 128 in the other, subcaudals 19 and 25 pairs. 



Both specimens have an imperfect pale collar a little behind the 

 head ; and one has a light spot on the hinder part of the fifth labial, 

 extending to the occipital shield. Similar coloration is noted by 

 Stoliczka in a Penang specimen. 



SiMOTES DENNYSi, sp. uov. (Plate XXI. fig. 1.) 

 Scales in 21 rows. General form stout and short, as in S. cochin- 

 chinensis^ and S. catenifer" ; the head broader than the neck. 



1 Giinther, Eept. Brit. Ind. p. 219, pi. xx. fig. C. 



=* Stoliczka, J. A. S. B. 1873, xlii. pt. 2. p. 121, pi. xi. fig. 3. 



