BY FREDERICK A. A. SKUSE. 395 



beyond the middle of the first longitudinal vein ; petiole paler 

 than the fork, shorter than the posterior branch ; branches 

 slightly divergent at their tips, fg about 4| times the length of 

 gh ; hi three-fourths the length of Im. 



Hah.— Kovini Kosciusko, N.S.W., 5000 ft. (Helms) ; two spe- 

 cimens in Coll. Australian Museum. March. 



II. First longitudinal vein joining the costa before the 



BASE OF the fork. 



A. Halteres black or brown, the stalk wholly or partly yellow, 



yellowish or whitish. 



1. Palpi black or brown. 



B. Cross-vein situated at the middle of the first longitudinal 



vein. 



449. Sciara contermina, sp.n. 



5. — Length of antennae 0-065 inch ... 1-66 millimetres. 



Expanse of wings 0-140 x 0-050 ... 3-55x1-27 



Sizeof body 0-135x0-025 ... 3-42x0-62 



Antennae slender, longer than the head and thorax taken 

 together, black or deep brown, with a short pale pubescence ; 

 joints of scapus black, sparingly pubescent ; fiagellar joints sessile, 

 sub-sessile towards the tip, 2 to about 2^ times as long as broad. 

 Head black, almost opaque, with a greyish bloom. Eyes con- 

 tiguous above. Palpi brown. Thorax black, levigate, with a 

 slight greyish bloom ; three almost parallel rows of short brown 

 hairs, the intermediate one not quite reaching the scutellum ; 

 lateral borders and scutellum with tolerably long black hairs ; 

 humeri very slightly tipped with yellowish-brown. Halteres 

 brown, the stem ochreous or brownish-ochreous. Abdomen dusky- 

 brown, with short brown hairs ; terminal segments and lamellae 

 of ovipositor blackish, the latter elongate-oval. Legs dusky- 

 brown, the terminal joints of tarsi blackish. In the fore- and 

 intermediate-legs the tibiae and tarsi of about equal length ; in 

 the hind-legs the tibiae a little longer than the tarsi. Spurs 

 honey-yellow. First joint of the tarsi rather more than twice 



