1891.] ON NEW BUTTERFLIES FROM EASTERN AFRICA. 633 



C. Scales in 21 rows or more, more or less 



distinctly keeled. 



Scales in 21 (rarely 23) rows ; nine or ten 



upper labials, fifth and sixth entering 



the eye 8. Z. ravergieri, Men. 



Scales in 23 or 25 rows ; nine or ten upper 



labials, fifth (rarely fifth and sixth) 



entering the eye 9. Z. nummifer, Eeuss. 



Scales in 25 to 33 rows ; ten to thirteen 



upper labials, none entering the eye 10. Z. diadema, Schleg. 



D. Scales in 41 to 43 rows, smooth ; 14 or 15 



' upper labials, none entering the eye 11. Z. microlepis, Jan. 



Z. nummifer, Reuss {neglectus, Jan), should perhaps be regarded 

 as a variety oi Z. ravergieri, Men. (caudcelineafus, Gihv., fedtschenJcoi, 

 Strauch), rather than as a distinct species. In addition to the 

 characters mentioned above, it differs in having the upper portion of 

 the prseocular smaller and the anterior pair of temporals more 

 enlarged. 



DiPSAS TRIGONATA, Schn. 



Another well-known Indian Snake to add to the fauna of 

 Transcaspia. A fine specimen is in M. Eylandt's collection from 

 Puli Hatun. 



2. Descriptions of New Butterflies collected by Mr. F. J. 

 Jackson, F.Z.S., in British East Africa, during liis recent 

 Expedition. — Part 11.^ By Emily Mary Sharpe. 



[Eeceived October 30, 1891.] 

 (Plate XL VIII.) 



Fam. NymphalidjE. 

 Snbfam. DANAiNiE. 

 Genus Amatjris. 

 Amauris jacksoni, sp. n. (Plate XLVIII. fig. 2.) 

 Intermediate between A. echeria, Stoll, and A. lobengula, E. M. 

 Sharpe ; hut is easily distinguished from both these species by the 

 great difference in the markings of the hind wing. 



Fore wing. Dark brown or nearly black, relieved by white spots 

 placed exactly in the same position as in A. lobengula, but all the 

 spots are pure white instead of yellow. An oblong white spot in the 

 middle of the discoidal cell ; an ovate spot below the cell between 

 the first and second median nervules, and a very small one near the 

 posterior angle, between the submedian nervure and the first median 

 nervule ; this spot is the commencement of a row of four spots 

 extending to the apex, the second spot being the smallest and 

 placed between the first and second median nervules, the third one 

 just above, and the fourth spot between the first radial or discoidal 



1 See P. Z. S. 1891, p. 187. 



