1034 MR. G. A. BOULENGER OX 



20. AmPHISB.'ENA FULIGINOSA L. 



Received alive by the Zoological Society. 



PHID I A. 



21. Trachyboa BOULENGER j Peracca. 



A single young specimen of this species, recently described 

 by Peracca, Ann. Mus. Zool. Univ. Nap. iii. 1910, No. 12, was 

 referred by me to I', gularis Peters, P. Z. S. 1898, p. 109, 

 pointing out the characters in which it differed from Peters's 

 description and Jan's figure. The spine-like raised scales on 

 the snout and above the eyes, which are so sti-iking in larger 

 specimens, are merely indicated in this specimen. 



The British Museum possesses two adult specimens from N.W. 

 Ecuador, and two from the Choco are now added by Dr. Spurrell. 

 1 append particulars of these four specimens : — 



1. $ , St. Javier, N.W. Ecuador. Total length 430 mm. ; 



tail 40. Sc. 27; Y. 139; C. 24. Sixth labial entering 

 the eye on the right side. 



2. S , with claw-like anal spurs. Same locality. Total length 



265 mm. ; tail 30. Sc. 30 ; Y. 133 ; C. 28. Fifth labial 

 entering the eye. 



3. J , with claw-like anal spurs. Peila Lisa, Choco. Total 



length 230 mm. ; tail 27. Sc. 30 ; Y. 131 ; 0. 23. Labials 

 all excluded from the eye. 



4. $ , same locality. Total length 270 mm. ; tail 25. Sc. 33 ; 



Y. 137 ; C. 20. Labials all excluded from the eye. 



The type specimen described by Peracca, the habitat of which 

 is unknown, has only 23 scales round the thickest part of the 

 body. The number of scales in Trachyhoa is probably as variable 

 as it is in Atheris. 



22. Streptophorus atratus Hallow. 



A specimen taken from the stomach of ein^Elaps rosenhergii, 

 after having swallowed a Ccecilia intermedia. 



23. Drymobius dendrophis Schleg. 



24. Phryngnax fasciatus Peters. 



25. Herpetodryas carinatus L. 



26. Leptophis bilineatus Gthr. 



One of the three specimens is bi-ight gi'een above, as in the 

 type, the two others are of a metallic bronze on the back and 

 sides, the head dark green, the sides of the neck green, the lower 

 parts pale green. 



The habitat of this species extends from the Isthmus of 

 Tehuantepec to N."W. Ecuador. 



