32 MR. S. A. NEAVE OX BUTTERFUES [Jail. 18. 



Hypanis acheloia Wallengr. 



A ubiquitous insect, preferring open spots. It is on the wing 

 all the year. 



Crenis occidentalium Mib. 



Only represented by four specimens captured on the upper 

 Lufupa river, x., and one in the same month on the lower 

 Chambezi. 



Crenis morantii Trim. 



Represented by a single male from dense forest, Kalungwisi 

 river, ix. 1908. 



Crenis trimeni Auriv. 



This species was swarming on the Lufupa and Lubudi rivers, 

 x., but I did not meet with it elsewhere. 



Crenis consors. 



Crenis consors Rothsch. &, Jord. ]S"ov. Zool. 1903, p. 532. 



Occurs throughout the basin of the Lualaba river and was 

 specially abundant, x. A difficult species to catch as it is shy 

 and usually settles on tree-trunks some 12-15 ft. above ground. 



Crenis ansorgei. 



Crenis ansorgei Rothsch. &, Jord. Nov. Zool. 1903, p. 534. 



This species is represented by three specimens from the neigh- 

 bourhood of Broken Hill, ix.-xi. 1905, and one from the Lufupa 

 river, x., and by a small series from the lower Chambezi valley, x. 



Crenis boisduvali Wallengr. 



Occurs sparingly throughout the country during the wet season 

 but seems nowhere common. 



Crenis amulia Cram. 



I found this species common in the basin of the Lualaba river 

 especially in October. 



Crenis rosa Hew. 



This species occurs to the east of the Broken Hill district on 

 the Alala plateau and through the Serenji district up to the 

 Chambezi valley, and everywhere to the east of these parts. 

 To the west it is replaced by the next species, C. pechueli Dewitz. 

 These large blue Crenis frequent woodland country, especially 

 wooded hill-sides. They are not nearly so conspicuous on the 

 wing as might be supposed from their appearance in the cabinet. 

 An inexperienced observer, except for their more powerful flight, 

 might easily mistake them for H. dcedalus on the wing. They 

 habitually settle on tree- trunks at some ten feet or more from 

 the ground, and at this distance their striking underside blends 

 harmoniously with their surroundings. 



