554 PROCEEDINGS OF THE ACADEMY OP 



164. P. s i b i 1 a n s Fitz. 1. c. Gunther Cat. Brit. Mus. 1858. Coluber sibiians 

 Linn., 1766. Col. moniliger Daud., 1802. Psammophis moniliger Boie, 1826. 

 Wagler, Schleg., Dum. Bibr. 



One sp. Africa, ? 



165. P. Phillip sii Hallow, Proc. Acad. Nat. Sci., 1854, p. 100 ; do. 1857, 

 p. 69. Coluber Phillipsii Hallow, 1. c. ii. 1844, 169. 



This species has three very narrow longitudinal light bands, which corres- 

 pond in position with the vertebral, and light inferior borders of the dark late- 

 ral bands of the P. sibiians. These are not alluded to in any of Dr. Hal- 

 lowell's descriptions. This species appears to us to be closely allied to the 

 sibiians, but has more the aspect of a tree snake, in the narrow, obliquely 

 arranged scales, and rather larger eye. 



One sp. Liberia, Dr. Goheen. 



One sp. (young, Proc. 1857, p. 69,) " " 



Tragops Wagler. Type T. prasinus. 



Nat. Syst. Amphib. 1830, 184. 



We have placed this genus and Passerita with Psammophis, on account of 

 the similarity of dentition, and from the fact that the T. tropidococcyx 

 (Dryiophis Gthr.) "possesses the habit and physiognomy" of that genus, 

 according to Dr. Gunther, who has made known the species. 



166. T. prasinus Dum. Bibr. Dryiophis pT-asinus Reinwt. Dryinus nasutus, 

 Bell. Tragops nasutus Wagler. 



One sp. Java, Dr. Rusehenberger. 



One sp. Anger, " 



One sp. Ceylon, Mr. Cuming in ex. 



One sp. India, Dr. Burrough. 



Var. laetu s nobis. Anal shield entire. Colors much brighter and yellower 

 than other specimens ; otherwise similar. 

 One sp. Philippines, Mr. Cuming in ex. 



Passerita Gray. Type P. mycterizans. 



Ann. Philos. 1825, 208. Dryinus Merrem, 1820, nee Fabricius. Dum. Bibr. 

 1354, vii. 808. Dryophis " Dalman," Boie Isis, 1827, nee Fitzinger. Neue 

 Class, 1825. (Quid "Dryiophis Dahlman " Boie in Ferussac, Bull, de Sc. Nat. 

 et Geol.,Oct. 1826?) Herpetolragus Fitz., 1843. 



167. P. mycterizans Gray. Col. mycterizans Linn. Dryophis nasutus 

 Merr. et auctorum. 



One sp. Madras, Mr. F. Brown. 



One sp. India, Dr. Burrough. 



One sp. Ceylon, Cuming ex. 



We would direct the attention of herpetologists who have large suits of spe- 

 cimens of this species at their command, to the variations in the relative 

 lengths of the tail and body. In our specimens from Madras and Ceylon, the 

 length of the former is to that of the latter, about as one to two ; in the speci- 

 men presented by Dr. Burrough, as one and one-third to two. In the latter, 

 the lateral and superior surfaces of the proboscis are verrucose, and the body 

 13 more slender in proportion to its length. 



168. P. f u s c a . Dryinus fuscus Dum. Bibr. Erp. Gen. vii. p. 812. Passerita 

 mycterizans. var. Dryinus fuscus Gthr. Cat. Brit. Mus. p. 161. Dryophis c. Boie, 

 Isis, 1827, 546; " eine dritte durch Leschenault von Ceylon, der aenea 

 ahnlich." 



Four specimens of this serpent from Ceylon agree in having a more atten- 

 uated, form than the mycterizans. The tail is to the body, in length, as 



[Dec. 



