230 OPHIDIA. 



species is known from North America ; the others are from the Liclian continent and from 

 Ceylon. 



Uniform green C. major, p. 230. 



Anterior part of the body witli black longitudinal bands . . . C. frcenatus, p. 230. 



Loreal united with nasal ; one praeocidar C. calamaria,^. 2Z\. 



Loreal united with nasal ; two prseoculars C MasaZis, p. 231. 



Loreal distinct. A bright yellow collar C. monticola, p. 232. 



Cyclophis major. (Plate XVII. fig. L.) 



Cyclophis major, Giinth. Colubr. Snakes, p. 120. 



Herpetodryas chloris, Hallow. Proc. Acad. Nat. Sc. Philad. 1860, p. 503. 



Body and tail of moderate length, not compressed; head rather narrow, of moderate 

 length, scarcely distinct from neck ; eye of moderate size. Rostral shield small, as high as 

 broad ; anterior frontal subtriangular, as long as broad, obtusely pointed in front. Vertical 

 much longer than broad, with the lateral margins but little convergent. Nostril rather wide, 

 nearly entirely dividing the single nasal ; loreal much longer than high ; praeocular extending 

 to the upper surface of the head, but not reaching the vertical; two postoculars; eight 

 upper labials, the foui'th and fifth entering the orbit ; temporals elongate, 1 + 2. Two pairs 

 of chin-shields : the anterior elongate, subsemicircular, in contact with four lower labials ; 

 the posterior narrow, strongly divergent. Scales smooth, without apical groove, ovate, not 

 elongate, in fifteen rows. Ventrals 175, without keel and not extending up the sides ; anal 

 bifid ; subcaudals 78-86. Uniform green above, paler beneath. 



Specimens of this snake have been received from Ningpo and Hongkong. Our largest 

 specimen is 37| inches long, the tail measuring 9 inches; another is SOg inches long, tail 

 7 inches. 



Cyclophis fr^natus. (Plate XIX. fig. I.) 



Cyclophis ti-enatus, Giinth. Colubr. Snakes, p. 120. 



Body and tail somewhat elongate, slightly compressed; head distinct from the slender 

 neck, broad between the eyes, with short snout ; eye of moderate size. Rostral broader than 

 high; anterior frontals much broader than long, subquadrangular, truncated in front, not 

 quite half as large as posterior ; vertical broad in front, with the lateral margins much con- 

 vergent ; superciliaries broad behind ; occipitals longish, rounded behind. One anterior 

 ocular, not extending on to the upper surface of the head ; two postoculars. Loreal square. 

 Seven upper labials, the third and fourth forming the lower part of the orbit; temporals 

 large, 1+2. Two pairs of elongate chin-shields, the anterior being in contact with four 

 labials. Scales smooth, without apical groove, rhombic, rather short, in fifteen rows. Ven- 



