OXYCALAMUS LONGICEPS. 199 



Macrocalamus lateralis. (Plate XVIII. fig. D.) 



Rostral shield depressed, longer than broad, extending on to the upper surface of the head ; 

 frontals bent downwards to the second and third labial shields ; vertical indistinctly five-sided, 

 longer than broad and smaller than the occipital ; superciliary and prseocular well developed 

 and in contact with each other, the latter not extending on to the upper surface of the head ; 

 the nasal is as large as, and exactly above, the first labial, the nostril being between them ; 

 eight upper labials, the fourth and fifth forming the lower part of the orbit, and the seventh 

 being the largest. One postocular ; temporals 1 + 2. Mental shield very narrow in a trans- 

 verse direction ; six lower labials, the first pair forming a suture together behind the mental ; 

 foui" are in contact with the anterior chin-shields. Chin-shields two pairs : the anterior are 

 nearly twice as long as broad, the posterior scale-like and entirely separated from each other 

 by an intermediate azygos scale. Ventral shields 118; subcaudals 20. Brown: a dark- 

 brown band, enclosing a regular series of whitish dots, runs along the side, bordering the 

 belly ; back with two series of indistinct brownish-black spots ; an irregular series of very 

 small black dots along each side of the belly, which is whitish ; a blackish subcaudal band. 



Total length 12 inches; head ^ inch, tail 1|- inch, circumference of the body 1^ inch. 



The only specimen known is from General Hardwicke's East Indian collection, and is pro- 

 bably from the continent. We have given three views of its head, of the natural size. 



OXYCALAMUS, Gf/n-. 



Body cylindrical, moderately stout ; head narrow, pointed, not distinct 

 from neck ; eye of moderate size, with round pupil ; tail rather short. 

 Rostral very small ; two pairs of frontal shields ; two (?) very small nasals, 

 nostril between ; loreal none, replaced by the posterior frontal ; one prse- 

 and one post-ocular ; five upper labials, the last in contact with the occipital. 

 Scales smooth, in fifteen rows ; anal entire ; subcaudals two-rowed. Teeth 

 equal. 



Only one species. 



OXYCAL.UIUS LONGICEPS. 



Calamaria longiceps, Cantor, Mai. Rept. p. 63. fig. 1. 

 Rostral very small ; anterior frontals half as large as posterior ; vertical six-sided, longer 



