556 PROCEEDINGS OF THE ACADEMY OP 



Coloration, greyish green, tinged with rufous upon the upper surface of head 

 and body. A narrow black line passing back from the eye, parallel to the 

 commissure of the mouth. No lateral stripe. 



Habitat. Veraguas, New Grenada. From a valuable collection made in that 

 place by R. W. Mitchell, Esq. 



AHAETULLINJE. 

 Chrysospelea Boie. Type C. o r n a t a. 



Isis von Oken, 1827, p. 546. Chironius Fitz. Isis, 1827, 265, nee Neue 

 Class. 1826. 



175. C. ornata Boie, 1. c. Coluber ornatus Shaw, 1803. Col. ibiboca, Latr. 

 1801 ! Chironius ibiboca Fitz. 1. c. 



Var. A. Gthr. 

 One sp. Philippines, Mr. Cuming in ex. 



Var. B. Gthr. 

 One sp. Siam, Dr. Ruschenberger. 



Two sp. ? ? 



176. C. rhodopleurum Boie. Dendrophis rhodopleuron Reinw. 



One sp. E. Indies. Smiths. Inst. 



Ahaetulla Gray. Type A. p i c t a . 



Annals of Philosophy, 1825, p. 208 (September) 1 Leptophis Bell, Zoological 

 Journal, 1825, p. 328 (October). Gray, in King's Australia, ii. p. 432, 1827. 

 Dendrophis, Fitzinger, Neue Classif. p. 60, 1826 (June). Boie, Ferrusac, Bullet. 

 Sci. Nat. et Geol. 1826, 238 (October). Wagler, Naturlich Syst. p. 183, 1830. 

 Fitzinger, Syst. Rept., 1843, p. 27. Dumeril, Prodrome General, 56, 1852. Giin- 

 ther, Cat Brit. Mus., 148, 1858. 



177. A. picta nobis. " Coluber fili/ormis Linn. Mus. Ad. Fried., pi. 17 f. 2." 

 Description and fig. not recognizable. Col. pictus Gmel. 1788. Col. coeruleus, 

 Bonaterre, 1790. Col. decorus Shaw, 1802. Ahaetulla decora Gray, 1825. Den- 

 drophis decorus Fitz., 1826. Dendr. picta Boie, 1826. Wagler, Schlegel, Fitz- 

 inger, Dumeril, Giinther. ILeptophis purpurascens Bell, 1826. L. maticas ibid. 

 Ahaetulla Bellii Gray, Ind. Zool., 1834. Leptophis pictus Cantor, 1847. 



One sp. near Calcutta, Dr. R. Coates. 



Thrasops Hallowell. Type T. flavigularis. 



Proc Acad. Nat. Sci. Phil., 1857, p. Dendrophis Boie, Isis, 1827, p. 520 

 (nee. Fitzinger, 1826). Schlegel Essai, 1837. Leptophis Wagler, Nat. Syst. p. 

 1830. Fitz. Syst. Rept., 1843. Dumeril, Prodrome, 1852 (nee Bell, 1825). 

 Ahaetulla Gthr., Cat. Brit. Mus. p. 151, 1858 (nee Gray, 1825). 



In this genus the scales are arranged in subtransverse rows, and are cari- 

 nate ; in Philothamnus Smith, they are similarly arranged and smooth ; in both 

 genera the gastrosteges are weakly keeled, the urosteges scarcely at all. In Gas- 

 tropyxis nobis, the scales are arranged quincuncially and are keeled ; thegastro- 

 and urosteges sharply angulated. In all three the dentition is syncranterian. 

 In Hapsidophrys, Fisch., the frontal region is much arched ; otherwise nearly 

 similar to Thrasops. 



P 



178. T. fla vigu 1 a r i s Hallow A c. Dendrophis flavigularis, Hallow. I.e. 1852, 

 205. We find no external character in this fine serpent which can, in our 



[Dec. 



