( 7o ) 



CHOEROGA MP IN A E. 

 THERETRA. 

 Here I have tea new species to describe, and a nnmlier of remarks to malce. 

 Theretra lewisii (Butl.) cannot be separated even as a snbsjjecies from T. elpeiior 

 Linn., and must be relegated to a synonym. Of the group allied to T. thjelia 

 (Linn.) I have a number of forms from all parts, very different in most cases ; but 

 I dare not describe them, as I have in nearly every case all the intermediate 

 grades. T. minor (Butl.) and 7\ major (Butl.) must sink as synonyms of T. lineosa 

 fAValk.), for I have them and every intermediate form from one locality iu the 

 Khasia Hills. T. jocaMa (Drnee) is a Darajisa, and not a Tlwrctra at all. T. iffiiea 

 (Butl.) is only an aberration of T. scrqfa (Boisd.), as I have all intermediate forms. 



Theretra rufescens sp. uov. 

 (PI. VI., fig. 11.) 



Forctciiiijs orange chestnut, with a large patch of darker chestnut in the cell ; 

 and the ajiical third of the wing is also shaded in an ill-defined way with darker 

 chestnut. Whole of the forewings vermicnlated all over with dark chestnut freckles. 



Hindioings deep black, with a small sulphur yellow tuft at the base of the 

 wing, a large yellow V-slin-pe'l mark near the anal angle, and a yellow fringe. 



Head and thorax ruddy chestnut. 



Abdomen ruddy chestnut, with a black jiatch each side of the first segment. 



E.xpanse, 4 inches = 102 millim. 



Hab. British Guiana. 



Theretra obliterata sp. nov. 



This highly interesting species is another proof of the remarkable connection 

 between the West African fauna and that of the Indo-Malayan region, for it is 

 clearly very closely allied to T. clotho (Drury). 



Forewings dusky buff, with a small black stigma in the cell. From the apex 

 to the inner margin runs obliquely a transverse dark grey line very much obliterated. 

 A still more olditerated transverse line runs from the outer edge of the cell to the 

 inner margin. 



Hindwings also dull bulF, but so covered with long dark grey hairs that the 

 ground colour is almost invisible, except round the margins and at the anal angle 

 of the hindwings. 



Head and thorax buflf, slightly freckled with dark grey. 



Abdomen buff. 



Expanse, 3-5 inches — 89-25 millim. 



Hah. Sierra Leone. 



Theretra catori sj). nov. 



Forewings huffy olive, banded and freckled with chocolate brown. A l)lack 

 spot followed by an obliipie line at tlie a])ex. 



Hindwings deep brown, with a cream-coloured costal margin. In the middle 

 of the wings is a large black patch, and from the anal angle an indistinct and 

 clouded band of pale jiink runs \\\t into the wings. 



Body yellowish olive. 



Expanse, 4 inches = 102 millim. 



Hab. Central North Borneo (coll. ('at or). 



