218 BOMliYMID.E. 



part for three-fourths of their length, the colour gradually 

 diminishing in intensity hindwards to the wing-margin, which is 

 dark grey ; halteres dark brown. 



Length, 15-16 mm. 



Described from four d" S and t^^•o $ $ in the Indian Museum, 

 mostly in inferior condition, from Karachi, Calcutta, and Purneah 

 (Bengal); also seen from Kumaon, v. 1910 (OJiatterjee) ; Pusa, 

 Bengal, 16. vi. 1909, 3. vii. 1906 ; Chapra, Bengal ; 8urat, Bombay, 

 14. iii. 1904 ; Assam, v. 1913 ; Konau Kuppam, 16-20. vi. 1913. 

 This is a very marked species, and cannot be confused with any 

 other in tlie family. 



Tyjics in the Copenhagen and Vienna Museums. 



166. Argyramoeba distigma, Wled. (PI. Ill, fig. 10.) 



Anthrax distiyma, 'V^'iedemann, Auss. Zweifl. i, p. 309 (18:^8). 

 Spogostylum (Kstiffnia, Coquillett, Proc. U.iS. Nat. Mus. xxi, 



p. 318(1898). 

 Arqyrama-ba distigma, de Meijere, Tijd. v. Eat. 1, p. 241 (1907) 



Bruuetti, Eec. Ind. Miis. ii, p. 449 (1909). 

 Anthrax argyropyiia, Doleschall, Nat. Tijd. Ned. Ind. xiv, p. 401 



(18o7) and xvi'i" p. 93 (1858). 

 Anthrax tri}nmctata, Wulp, Tijd. v. Ent. xi, p. 109, pl. iv, fig. 1 



(1807) ; Usteu-Sacken, Ann. Mus. Gen. xvi, p. 433 (188:2). 



6 $ . Head : frons a little more than one-third the width of the 

 head above antennae, about three-fifths of this width at vertex, 

 blackish grey, with black pubescence, and over more than thelov^er 

 half the usual small grey scales ; face dark grey, with fine black 

 hairs at sides and bristly hairs around mouth-border, which latter 

 is yellowish white ; proboscis dark brown, with large dark bi'own 

 labella ; occiput blackish grey, with greyish-white scales near eye- 

 margins and a fringe of dark brown hair on hind border. Antennae 

 black; 1st and 2nd joints very short, with black bristles ; 3rd short, 

 stumpy onion-shaped, the produced part very narrow at base, 

 cylindrical ; the stjde distinct, rnther long, with a conspicuous 

 pencil of hairs at tip. Thorax black ; doi'sum wholly covered with 

 minute ad pressed hairs like grey scales ; a rather thick collar on 

 anterior margin of elongate very narrow grey scales, behind which 

 are numerous rather long bristly black hairs ; a lai'ge patch of 

 similar elongate grey scales over the Iiumeral region and in front 

 of the wing-base ; hind margin of dorsum with a little longer grey 

 pubescence mixed with bristly black hairs, and a row of curved 

 black bristles near the edge ; black bristles of various sizes occur 

 along both side-margins of tlie dorsum, whilst the hind corners of 

 the thorax bear fine powerful black spines directed backwards ; 

 pleurae covered with sliort grey pubescence, with black bristly 

 hairs intermixed. Scutellum black, with minute adpressed grey 

 hair-like scales and a row of ten or more strong black bristles on 

 hind margin, besides numerous irregularly-placed black hairs. 

 Abdomen black ; 1st segment rather dark bluish grey, with fine 

 black pubescence, and at each anterior coi'ner a large conspicuous 



