41& D&. A. G. BUTLER OK LEPIDOPTERA [May 17, 



primaries comparatively narrower l , pale cupreous brown ; a silvery 

 white costal streak from base tapering to a point just before the 

 basal third ; the remainder of costal area unmarked almost to apex, 

 where a silvery white baud commences, runs obliquely to the 

 upper radial (vein 6), where it joins a longitudinal discoidal streak 

 tapered at each extremity and commencing in the cell just beyond 

 the termination of the costal streak ; a longitudinal interno-median 

 streak tapering towards the base and confluent on outer margin, 

 with a short narrower stripe above the first median branch, thus 

 forming a kind of L-shaped character ; above the latter along the 

 outer border is a cuneiform patch of silvery white, deeply incised 

 at third median branch ; base of internal border white, terminated 

 by an oblique spot of brown slightly darker than the ground-colour, 

 beyond which is a whitish patch ; secondaries pearly white, 

 unspotted. Body much rubbed, but probably very similar to that 

 of L. vocMla. Under surface of wings as above, excepting that the 

 ground-colour of the primaries is a little paler and greyer. Expanse 

 of wings 35 millim. 



Marago ya Fundi, Taru desert, 2nd March, 1897. 



Unfortunately only one example was obtained, but it seems to 

 differ too much from either of the species above noted to be a 

 variety ; the absence of the white costal markings and the much 

 more regular character of the markings seem likely to be trust- 

 worthy distinctions. 



I am quite unable to identify the following with any genus of 

 LitTiosiince : 



BETTOKTA, gen. nov. 



Nearest to Dictenus (ButL), general aspect of Eubaphe ; the 

 palpi extremely small, slender, directed forwards ; proboscis short 

 but well-developed ; antennae (of female) about one-third the 

 length of primaries, simple, somewhat thick ; primaries elongate- 

 triangular, costal vein running to second third of costa ; subcostal 

 five-branched, the second and third from a long footstalk, the 

 fourth and fifth from a short footstalk ; secondaries with the sub- 

 costal branches from a long footstalk ; the other veins all well 

 separated at their origins. Type B, ferruginea. 



129. BETTONIA FERRFGINEA, sp. n. (Plate XXXII. fig. 5.) 



$ . Tawny ferruginous ; primaries above with a slightly greyish 

 tinge and a black spot in the centre of the discoidal cell ; all the 

 wings with a black discocellular spot. Expanse of wings 20 

 millim. 



$ , Yoi, 2nd May, 1897. 



130. LEXIS BIPTJNCTIGERA. 



Lithosia bipunctigera, Wallengren, Wien. ent. Monatschr. 1860, 

 p 45. 



1 This is, however, probably only a sexual character. 

 124] 



