360 CHARLES T. BRUES. 



Austin, Texas (Melander), which undoubtedly belong to this species. 

 They differ as follows from the above description of European speci- 

 mens as given by Becker: the body is uniformly darker, almost 

 black, the halteres blackish, wing veins darker, hind femora unicol- 

 orous, dark brown in Idaho specimens. Otherwise they seem to be 

 identical with the European form. 



Aphiochteta faxiala Fallen. 



Fallen, Dipt. Suec. Phytomyzides, 7, 9. 



Zetterstedt, Dipt. Scand., vii, 2879, 28. 



Schiller, Fauna Austriaca, ii, 344. 



Slosson, Entomological News, vi, 7. 



Aid rich, Diptera of St. Vine, Trans. Loud. Ent. Soc, 1896. 



Becker, Mouog. Phoridse. p. 50. 

 Length 1.75-2 ram. Wholly yellow; second to fourth abdominal segments 

 black above. Two scutellar and one pair of dorsocentral bristles present. Head 

 yellow ; front above varying from gray to fuscous; strongly convex and long, so 

 that the antennae are inserted very low down ; second joint large, ovate, with a 

 short hare arista. Lower row of frontal maerochsetse arranged in an arcuate 

 row, widely separated from the second row; the middle pair of anteriorly 

 directed bristles absent or scarcely developed. Abdomen and halteres dull 

 yellow; abdomen more or less infuscated, but the fifth segment usually bright 

 yellow. Hind tibise not darkened at the apex, lined with black and with two 

 evident rows of fine bristles; hind tarsi black. Wings rather small, almost 

 hyaline; the costal vein short and weakly bristly, not reaching to the middle of 

 the wing. First and second longitudinal veins closely approximated. 



I have not seen any specimens from this side of the Atlantic. It 

 has been reported from New Hampshire by Mrs. Slosson, and from . 

 St. Vincent by Professor Aldrich. : 



It should be easily recognized by the short costal vein, which falls 

 considerably short of the middle of the wing. This is also the case 

 in pygmcea Zett., but in this latter species it is still shorter and is 

 only one-third the length of the wing. 



Aphiocliseta obscura sp. nov. (Plate vi, fig. 27.) 

 Length 1 mm. Head brown, thorax and legs yellowish, abdomen black, wings 

 brown. Front fuscous, sparsely pale hairy, cheatotaxy as usual. Ocellar tuber- 

 cle and median impressed line very prominent. Antenna? small, yellowish 

 brown, with a pubescent arista. Palpi yellow, with strong bristles; post-ocular 

 cilia much enlarged below; two strong cheek bristles. Thoracic dorsum luteous, 

 rather shining; with one pair of dorsocentral macrochsetse and only two marginal 

 scutellar bristles. Halteres pale brown. Abdomen black, the posterior edges of 

 the segments brownish, last segment yellow. Legs luteous. darker toward the 

 tarsi ; middle and hind tibise each with a single apical spur; the hind ones very 

 obsoletely ciliated. Wings infuscated; brownish yellow; veins piceous; costa 

 reaching to the middle of the wing, its bristles sparse and delicate, although not 



