1897.] BUTTKEFLIES OF THE GENUS TEEACOLUS. 7 



seems restricted to the northern half of the Transvaal ' ; but on 

 the west it has a more extensive range, occurring from the Orange 

 Hiver to Ovaojpoland. In the summer form the underside of hind 

 wings is pure yellowish, but in the dry-season form it is thickly 

 speckled with sandy hatching. 



2. TEBACOIitS EEIS. 



Fontia eris, Klug, tSymb. Phys., Ins. pi. vi. figs. 15 & 16 (1829). 



Idma'is fatma, Felder, Eeis. Xovara, Lep. p. 189, pi. xxv. tig. '6 

 (1865). 



Teracolus ahijssiniciis, Butler, Ann. Mag. X. H. (4) xviii. p. 486 

 (1876). 



Idmcds mahnuna, Kirby, Pr. Hoy. Dubl. Soc. p. 46 (1880). 



Ttracolus johnstoni, Butler, Ent. Mo. Mag. xsiii. p. 29 (1886). 



Teracolus ojjalinus, Butler, Ent. Mo. Mag. xxiii. ]). 30 (1886). 



Teracoivs cujoye 2 ?, Butler, Proe. Zool. Soc. p. 572 (1894). 



This wide-ranging and variable species has received many names, 

 □one of which stem worthy of specific distinction. Idmais fatma, 

 Feld.,is founded on a very lightly marked dry-season female from 

 Kordofan ; and a still lighter specimen was tentatively attributed 

 to female T. agoye, Wallgr., by Butler. There are three specimens 

 of T. uhyssinicus, Butler, in the British Museum ; they are clearly 

 yellow females of T. eris, the type being rather more heavily marked 

 than usual. Idmaismaimuna, Kirby, is quite indistinguishable from 

 2\ eris ; and T. johnstoni, Butl., is only the ordinary South-African 

 dry-season form of the species. The type of 2\ opalinus, Butl., is 

 an unusually large female from Delagoa Bay, in which the upper 

 white spots in apical black patch are almost obsolete, but it is 

 certainly nothing but T. eris. This species ranges practically 

 throughout Africa, with the exception of the extreme S.W. and 

 N.W., and even extends into Arabia. 



3. TEEACOLrS COLIAGENES. 



EvcMoe coliagenes, Butler, Ann. Mag. N. H. (3) xx. p. 216 

 (1867). 



The single type in the British Museum is a yellow female from 

 the White Nile, which seems to link T. eris to the T.fausta group. 



4. Teeacoltjs agote. 



AnthopsycJie ayoye, Wallengren, K. Sv. Vet.-Akad. Haudl. ; 

 Lep. Ehop. Caf. p. 15 (1857). 



Anthocharis eospliorus, Trimen, Trans. Ent. Soc. (3) i. p. 523 

 (1863). 



This species seems to occur only in the strip of country lying 

 between 20° and 26° S. lat., from Eamaraland to the Eastern 

 Transvaal. In the latter country I found it fairly plentiful within 

 a limited area along the Olifants Eiver in May 1893. 



' Since writing this I have seen a male taken by Mr. R. Crawshay in Nyasa- 

 land, and a female taken by Dr. Ansorge in Uganda. 



