igog.] Records of the Indian Museum. 471 



wing- tip narrowly clear. The second longitudinal vein forms nearly 

 a sharp angle at the commencement of the downward loop, some- 

 what as in Lepidanthrax. 



Described from a & (type) in the Pusa collection, taken, 

 24-iii-o6, at Larksom (Bengal), and from a $ in the Indian Museum 

 collection from Margherita (Assam). 



N .B. — I retain this species under Argyramceha, mainly because 

 the pencil of hairs at the tip of the antennal style is regarded by 

 Osten Sacken as the most important generic character, and, 

 though small, these hairs are present in the new species. The 

 bisection of the style is, however, not apparent, nor does the fork 

 of the third vein show the usual appendix. The very flattened, 

 irregularly oval, third antennal joint, the long, rather narrow abdo- 

 men, and the long wings approximate it to Argyramceha rather 

 than to Anthrax. In one or two respects it resembles Astrophanes, 

 O.S., a genus containing but one species (from Mexico) ; these 

 are the " almost rudimentary development of the base of the 

 costa and the closed anal cell." These two characters, in con- 

 junction with the contiguity of the eyes on the vertex in the 0^ , 

 are regarded as the main generic distinction of the genus. As, 

 however, I believe both sexes to be before me, my species cannot 

 be an Astrophanes. The angled loop of the second vein approxi- 

 mates it to Lepidanthrax, O.S., so that for the present it should 

 be regarded as somewhat of an aberrant species. It seems to 

 bear some resemblance to Bigot's Argyramceha appendiculata , and 

 it is just possible it may be identical with it, but the 5 in the 

 Indian Museum collection is labelled as a distinct species by Bigot 

 (erroneously as a cf), and I therefore treat it as such. When the 

 two sexes are placed side by side the difference of width in the frons 

 is sufficiently noticeable. 



Argyramoeba ceylonica, mihi, sp. nov. 

 (Plate xii, fig. 24, abdomen.) 



rf . Ceylon, Bengal. Long. 9 mm. 



Head. — Frons and face quite black, with thick short black 

 hair ; antennae black, third joint short, onion-shaped, with moder- 

 ate style, basal joints with black bristles. Proboscis and palpi with- 

 drawn, apparently blackish brown. Back of head narrow, blackish 

 grey, almost bare. 



Thorax. — Black, with short yellow hairs which are thickest 

 on the shoulders and round the sides. Sides of thorax ash-grey- 

 ish, with scattered yellow hairs. Scutellum black, with sparse 

 3"ellow hair. 



Ahdomen. — Ovate, black, first segment with a conspicuous 

 fan-shaped bunch of bright yellow hairs at the sides. Remaining 

 segments towards the sides wholly tawny, this colour continuing 

 at the actual sides of the segments up to the tip of the abdomen, 

 which is blackish above. Belly tawny ^'■ellow with yellow hair. 



