12 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.64 



coming somewhat convergent and at apex somewhat divergent. 

 Length 5-6.5 mm. 



Distribution. — The species is distributed over entire Europe. 



15. CLUSIA LATERALIS Walker. 



(Fig. 1.) 



Helomxjza (?) lateralis Walker, Liat Dipt., vol. 4, p. 1095 (1849). 



Heteroneura spedabilis Loew, Wien. ent. Monatsch., vol. 4, p. 82 (1860); Berl. 



ent. Zts., vol. 7, p. 207; Cent. 4, 92 (1863). 

 Clusia lateralis Czerny, Wien. ent. Ztg., vol. 22, p. 89 (1903). — Johnson, 



Psyche, vol. 20, p. 101 (1913).— Malloch, Proc. Ent. Soc. Wash., vol. 20, p. 4 



(1918). 



Front brownish yellow, ocellar spot black, face of male black, of 

 female with subantennal black stripes, cheeks and mouthparts pale 

 yellow, antennae reddish yellow, arista sparsely pubescent. Notum 

 testaceous with a brownish lateral stripe beginning one-fourth the 

 way back from the neck and reaching the scutellum, pleurae pale 

 yellow, the upper part with a complete broad black stripe. Abdomen 

 mostly yellow, the posterior sides of segments two to four with 

 triangular blackish marks, hypopygium black. Legs yellowish, the 

 basal half of the liind tibiae browTiish, postero-flexor bristles of the 

 fore femora much stronger than those of the anterior row. Wings 

 yellowish hyaline with a brownish spot on apical third, a slight 

 clouding over basal two-thirds of fifth vein, costal ratio 4.5: 1.3: 1, 

 sections of fourth vein 1: 1.2, of fifth vein 5.3: 1; hal teres yellowish. 

 Length 5 to 7 mm. 



Pwparium. — Rufous, stigmal area less rugose than body and some- 

 what lighter in color, a central pair of divergent triangular stigmal 

 processes, anus below stigmal area and surrounded by a black plate. 

 Length 5 mm. 



Distribution. — The species has been recorded previously from 

 Maine, Vermont, Massachusetts, New Jersey, Pennsylvania, Ottawa, 

 Canada, District of Columbia, and Illinois. The female type is in 

 the British Museum of Natural History. Specimens before us have 

 come from the following localities: White Mountains, N. H.; Green- 

 field, Mass.; Ithaca and Gloversville, N. Y. ; Brookside, N. J.; 

 Pittsburgh, and Allegheny, Pa.; Plummer Island and Camp Meade, 

 Md.; Dead Run, Va.; and Black Mountain, N. C. Most of the 

 specimens were collected in late June and July. 



16. CLUSIA OCCEDENTALIS Malloch. 



(Fig. 2.) 

 Clusia occidentalis Malloch, Proc. Ent. Soc. Wash., vol. 20, p. 4 (1918). 



Entirely yellowish, front, upper occiput and antennae luteous, 

 face, cheeks and palpi whitish, arista very minutely pubescent, 

 bristles strong. Thorax testaceous, coxae paler; abdomen in*the 



