22 PROCEEDIJSTGS OF THE NATIONAL MUSEUM. vol.64 



A specimen from Cloiidcroft, N. Mex., was identified as pictipes on 

 superficial comparison with specimens in the United States National 

 Museum so determined by Coquillett. Johnson and Malloch are 

 doubtful if Zetterstedt's species actually occurs in America, and the 

 question can not be settled in the absence of typical European 

 material. However, since Zetterstedt's description applies well to 

 our form, there is nothing to be gained by bestowing a new specific 

 name on the specimens from the United States. Malloch tabulates 

 the species as having a light colored thorax. 



30. CLUSIODES (CLUSIARIA) RUFICOLLIS Miegen. 



Heteroneura ruficollis Meigen, Syst. Bes., vol. 6, p. 128 (1830). — Zetterstedt> 

 Dipt. Sc, vol. 7, p. 2789 (1848).— Loew, Wien. ent. Monats., vol. 1, p. 52 (1857); 

 Berl. ent. Zts., vol. 8, p. 343 (1864).— Schiner, Faun. Austr., vol. 2, p. 38 

 (1864).— CzERNY, Wien. ent. Ztg., vol. 22, p. 75 (1903). 



Clusiaria ruficollis Malloch, Occ. Papers Bost. See. N. Hist., vol. 5, p. 48 (1922). 



Heteroneura laterella Zetterstedt, Dipt. Sc, vol. 7, p. 2791 (1848). 



Front yellow, ocellar spot black, face, cheeks, mouthparts and 

 antennae pale yellowish, arista pale and finely pubescent, one vibrissa, 

 three fronto-orbitals, postverticals strong. Notum testaceous, pale 

 laterally, pleurae rufous above, one small and two large postsutural 

 dorsocentrals. Abdomen black, hypopygium greatly swollen, the 

 valves as in melanostoma. Legs yellowish except the brownish front 

 tarsi. Wings nearly hyaline, a slight infumation on apical third 

 between costa and third vein, sections of costa proportioned 5 : 1.2 : 1, of 

 fourth vein 1.2:1:4.5, of fifth vein 1.3:1, third and fourth veins 

 slightly convergent at tip; halteres whitish. Length 3 mm. 



Distribution. — -Northern and Central Europe. We have specimens 

 from Waubamic, Ontario, collected by H. S. Parish, which agree with 

 the diagnoses of the European species except that they lack the 

 variable brown vittae just outside the dorsQcentral rows. These 

 have furnished the preceding description, but in the absence of 

 European material for comparison may not be identically the same 

 form. They may represent a pale faced mutation of our common 

 C. melanostoma. 



31. CLUSIODES (CLUSIARIA) TERMINALIS, new species. 



(Fig. 8.) 



Clusiodes apicalis Malloch, Proc. Ent. Soc. Wash., vol. 20, p. 6 (1918). 

 Clusiaria apicalis Malloch, Occ. Papers Bost. Soc. N. Hist., vol. 5, p. 48 (1922). 



Male. — Front dusky yellow, posterior half darker, antennae 

 yellow, the third joint infuscated, arista yellow, microscopically 

 pubescent, face, the broad cheeks and mouthparts whitish, vibrissa 

 moderate, two strong buccal bristles three-fourths as long as the 

 vibrissa, head bristles strong and black, three fronto-orbitals, post- 

 verticals present. Notum dull castaneous, humeri and lateral vitta 



