360 Mr. F. W. Edwards on 



therefore, no hesitation in referring Gnophomyia ornatipennis, 

 de Meij., to Gymnastes, which is a very interesting genus, as 

 it appears to connect Teucholabis with the Gnophomyia 

 group. The hypopygium shows a greater resemblance to 

 Teucholabis than to Gnophomyia. 



Group Eriopterini. 



Gnophomyia tnacuHpIeura, sp. n. (Fig. 5, p. 356.) 



Head dull blackish, front very broad. Antennae nearly 

 twice as long as the thorax in both sexes ; scape light 

 brown, flagellum dark brown ; first joint not much longer 

 than broad, second round; flagellar joints elongate-oval, 

 almost cylindrical, at the base about four times as long as 

 broad, at the apex not quite so long, all clothed with a dense 

 pubescence as long as their width and with rather numerous 

 hairs as long as the length of the joints. Thorax dark 

 reddish-brown, scutellum and pleurae lighter, the pleurae 

 with two large roundish black spots, one on the hypopleura 

 and one just below and in front of the root of the wing. 

 Abdomen uniformly dark brown. Hypopygium, fig. 5. 

 Ovipositor resembling that of G. orientulis, de Meij. Legs 

 brownish, tarsi somewhat darker. Wings hyaline, the veins 

 blackish, stigma faint. Venation as in G. orientalis, de Meij., 

 the relative lengths of Rs and R2+3 are somewhat variable. 

 The pubescence on the veins is uot quite so noticeable as in 

 de Meijere's figure. Halteres blackish. 



Length of body, S 4 mm., ? 5 mm. ; wing, S 4 mm., 

 ? 5 mm. ; antennae 2 mm. 



SiAM : Bukit Besar {Robinson 4- Annandale), 2 J" (incl. 

 type), 1 ? . 



This species belongs to the same group as the American 

 G. tristissima, O.-S., the type of the genus. As Osten- 

 Sacken long ago pointed out, there are two distinct types at 

 present included within the genus ; in the present writer^s 

 opinion the other group might well be removed to a distinct 

 genus, to which the name Dasymallomyia may perhaps be 

 applicable, though D. signata, Brun., the type of this latter 

 genus, presents some rather noticeable differences from the 

 other species, such as G. luctuosa, O.-S., and G. elegans, 

 Wied. 



G. maculipleura is evidently closely allied to G. orientalis, 

 de Meij., and may eventually prove to be the same species, 

 but appears to be well distinguished by the two distinct 

 blackish spots on the pleurae. 



