1896.] ON LEP1DOPTERA FROM NYASA-LAND. 851 



On a Collection of Lepidoptera from Nyasa-land presented 

 to the Museum by Sir Harry Johnston, K.C.B., and 

 collected by Mr. J. B. Yule. By ARTHUR G. BUTLER, 

 Ph.D., F.L.S., F.Z.S., Senior Assistant-Keeper, Zoolo- 

 gical Department, British Museum. 



(Plate XLIII.) 



From the few notes as to exact localities which occurred on the 

 envelopes it would seem that the present collection was obtained 

 partly, if not altogether, on the Songwe plain, N.W. Nyasa, in 

 1895 ; but so very few of the specimens are accompanied by 

 notes as to locality and date of capture, that I have not thought 

 it advisable to burden the * Proceedings ' by repeating references 

 to descriptions and figures, most of which have already been given 

 in other papers on Nyasa Lepidoptera published in the Society's 

 1 Proceedings/ 



The collection contains examples of five new species and of a new 

 form of a known species ; but, in addition to these, there are several 

 species of interest, such as the wet-season form of Ypthima gra- 

 nulosa ; examples of the broad-bordered variety of Charaxes saturnus, 

 to which I gave the name of laticinctus ; a somewhat w^orn female 

 example of the rare Charades violetta ; the white variety of Euralia 

 mima ; additional examples of Metacrenis crawshayi ; a curious 

 variety of the female of Alcena nyassce having the base of the pos- 

 terior wings white ; both wet- and dry -season forms of Teracolus 

 opalescens; the rare Teracolus hildebrandtii' a dry- season female 

 of Teracolus subfasciatus, differing in its superior size, the larger 

 apical orange patch on the primaries being without inner blackish 

 limitation, and the under surface more strongly reticulated ; both 

 seasonal forms of Teracolus emini ; the male of Belenois diminuta, 

 showing that the latter is the dry season form of B. craivshayi; a 

 good series of Papilio nivinox, consisting entirely of males (as the 

 only example which we possess of P. taboranus is a female, it 

 seems probable that the differences in pattern and colouring 

 between these two forms of Papilio are due to sex, in which case 

 the name of P. taboranus will have to stand for the species); 

 an example in good condition of a rare Hesperiid (Cydopides 

 wUlsmi\ of which the Museum previously only possessed a broken 

 example. 



Among the Moths, the most interesting additions, apart from 

 the new species, are two male examples of Hibrildes nor ax. 

 Respecting Hibrildes we know very little at present : if the female 

 resembles the male, no examples have hitherto been received ; but 

 it is possible that the sexes may be entirely dissimilar, and that 

 my Hibrildes crawsliayi may eventually prove to be the female, 



