468 tipuliu.t:. 



Prof. Kertesz places Leclirla in the Ekioptemxi, near Gonomyia, 

 to one species of ^^■iuch, G. incompUta, Bran., it bears a 

 remarkable resemblance in this part of the wing, and to which 

 genus, L. hengalensis, as a species at any rate, is eminently akin. 



The only other possible interpretation of the wing, as figured 

 by ISTeedham, would be to consider the 1st vein as angled towards 

 the tip and continuing to the wing-margin, meeting at the angle 

 the 2nd vein, which in this case would be simple, not forked, thus 

 making only one submarginal cell, which in its turn would 

 necessitate the genus, theoretically at least, being removed to 

 another section of this subfamily ; but its position near Gonomijia 

 seems hardly questionable. 



Genus GONOMYIA, Mg. 



Gonomyia, Meigen, Svst. Besclii'. i, p. 146 (1818). 

 Taphrusia, liondaui, Dipt. Ital. Prod, i, p. 182 (1856). 

 Goniomyia, Osten Sacken, Monog. Dipt. N. Amer. iv, p. 177 



GENOTYPEjLimnoiiff teneMa, Mg. (according to Coquillett, 1910). 



Head : Eyes separated by a frons about one-third to one-fifth 

 the width of the head. Palpi and proboscis both short, joints of 

 the former subequal. Antennae of sixteen joints ; if bent back- 

 wards they would not quite reach the root of the wings ; scape 

 normal, tlagellum with the joints subcylindrical or oval, verti- 

 cillate. Thorax oval, moderately arched, only slightly narrowed 

 anteriorly ; neck not very pronounced. Abdomen linear, more or 

 less flattened, sometimes slightly broader about the middle in the 

 female. Genitalia of male consisting of the usual pair of bi- 

 jointed claspers of various shapes, according to the species, to 

 which smaller appendages are attached.* Legs long, slender, 

 slightly or almost microscopically pubescent ; tibiae without spurs, 

 empodia generally distinct, occasionally wanting. Wings varying 

 in length, and, to a less extent, in width and general shape, 

 usually more or less glabrous, but in some species a very short 

 but distinct pubescence is discernible. Venation peculiar.f 

 Normally two submarginal cells, but in some species only one. 

 Auxiliary vein ending opposite beginning of 2nd longitudinal 



* Describing a North-American species, Osten Sacken says of the male 

 organs " more simple than that of tlie two species I have figured (blanda and 

 cognateUa). Tliere are two lateral, elongated, subcylindrical (digitiform) lobes, 

 converging, but not lapping over eacli other in repose ; immediately above and 

 parallel to them is a single long horny style, the tip of which reaches beyond 

 the tip of the lobes ; below the lobes, some small black horny organs are per- 

 ceptible." 



t This genus may be regarded as the centre one of a small group of genera 

 possessing the character of the peculiar forking of the 2nd longitudinal vein 

 making the short upper branch appear almost or quite like a cross-vein. These 

 genera are Emjjeda, Moiigoma, Mongomioklcs, and Paniiaongoma. 



