1910.] FROM NORTHERN RHODESIA. 57 



Nacaduba sichela Wallengr. 



A very common species, somewhat scarce during the dry season. 

 It may often be seen in very large numbers at damp mud. 



POLYOMMATUS BCETICUS L. 



This species is ubiquitous. It varies a good deal in size. 

 Cyclyrius noquasa Trim. 



Represented by a single male from the north of Lake Bangweolo, 

 vii. 



Catachrysops malathana Boisd. 



A very common insect throughout the country. 



Catachrysops skotios H. II. Druce. 



Catachrysops skotios H. H. Druce, Trans. Ent. Soc. 1905, p. 259, 

 pi. xiii. f. 12. 



Three males and one female of this species from the Lubudi 

 and Lufupa rivers, ix. and x. 



I also captured a very long series of specimens in the Chambezi 

 valley, x. 08, which are doubtfully attributed to this species ; they 

 are larger and rather paler than the type. Most of the males 

 exhibit on the upper surface a trace of the eye-spot at the anal 

 angle of the primaries, which is not figured in the type. The 

 females are larger, paler, and have a slight blue iridescence on the 

 upper surface. 



Catachrysops dolorosus Trim. 



I found this small species scarce, possibly it was often over- 

 looked. I took one individual in the Luangwa valley, i., two in 

 the Serenji district, ix., and three others in the upper Lofu valley, 

 viii. and ix. I ultimately found it pretty common in the Chambezi 

 valley, x. and xi. 



Catachrysops albistriatus Capronn. 



A single male from Kambove, ii., and a female from near Lake 

 Young, Chambezi valley, at the end of October. 



Catachrysops procerus Trim. 



I captured two males of this rare species on the plateau to 

 the north of Broken Hill, ix. and x., and two more during the 

 same months in the country east of Lake Bangweolo, near the 

 mouth of the Chambezi. 



Catachrysops osiris Hopff. 



This is a common species everywhere. 



Catachrysops barkeri Trim. 



Represented only by one female from the Luangwa valley, iv., 

 and a pair in the same month from Kambove. 



