BY FREDERICK A. A. SKUSE. 821 



but distinct. Forceps of the male with large, incrassated basal 

 pieces, and a double claw-shaped horny appendage fastened to 

 them on each side ; ovipositor with flattened, curved, pointed 

 upper valves and short lower ones." (Osten-Sacken). 



341. Trimicra hirtipes, Walker. 



Limnohia Jm'tipes {^), Wlk., List Dipt. Brit. Mus. I. p. 50, 

 1848; Trimicra Sydney ensis (9), Schiner, " Novara " Exp. Dipt, 

 p. 43, 1868 ; Trimicra hirtipes^ O.-Sacken, Mon. Dipt. N. Amer. 

 IV. p. 167, 1869. 



^. — Length of antennae 0*085 inch ... 2-14 millimetres. 



Expanse of wings 0-300 x 0-090 ... 7-62x2-27 



Size of body 0-250x0-050 ... 6-34x1-27 



9. — Length of antennae 0-060 inch ... 1*54 millimetres. 



Expanse of wings 0-300x0-090 ... 7-62x2-27 



Size of body 0-260x0-050 ... 6-62x1-27 



Head covered with a greyish or yellowish-grey bloom, traversed 

 on the front by black median line ; rostrum, palpi and antennae 

 brown or black, basal joints of latter testaceous or brownish- 

 ochreous. Thorax covered with a yellowish-grey bloom, with 

 three brown or blackish stripes ; intermediate one somewhat 

 shining anteriorly, interrupted immediately before suture, but 

 extending beyond it posteriorly ; lateral ones short, not so distinct, 

 but also extending beyond suture ; humeral pits and suture black ; 

 humeri yellowish ; pleurae more or less ochreous, hoary, with two 

 brown or blackish stripes, one from base of fore coxae to root of 

 halteres, the other above the intermediate and hind coxae ; scutellum 

 ochreous, tinged with brown ] metanotum sooty brown, hoary. 

 Halteres infuscated, the stem more or less yellowish. Abdomen 

 deep fuscous brown or black, shining, with yellowish hairs (more 

 dense in $) ; lateral and posterior borders of segments with a 

 narrow margin of ochreous or brownish-ochreous ; genitalia 

 brownish-ochreous. Legs testaceous j in ^ densely clothed with 



