4 PROC. ENT. SOC. WASH., VOL. 20, NO. 1, JAN., 1918 



Wing with only 1 brown band, the aptical one; male with bristles of 

 postero-ventral series on fore femora much stronger than those 

 of antero-ventral later alis 



Clusia occidentalis n. sp. 



Male. Yellow, distinctly shining. Frons golden yellow, upper half of 

 orbits and ocellar triangle shining, the remainder opaque; bristles black; 

 antennae and palpi pale yellow; face and cheeks whitish. Thorax, ab- 

 domen, and legs yellow. Wings slightly grayish, with a brown costal 

 mark extending from apex of first vein round apex of wing to a point pos- 

 terior to fourth vein; outer cross-vein with a large brown spot, the latter 

 extending into first posterior cell. 



Cruciate frontal bristles strong; ocellar bristles extending to base of 

 cruciate pair. Abdomen stouter than in lateralis and with stronger bris- 

 tles. Fore and mid femora with strong black bristles on the posterior 

 ventral surfaces. Last section of fourth vein about two and one-half 

 times as long as preceding section. 



Female. Similar to male. 



Length, 5.5 mm. 



Type locality, Washington State (Kincaid). 

 Type Collection State Natural History Survey of Illinois. 

 Paratypes and Allotype, Portola, Cal., April 13, 1906 (coll. 

 Aldrich). 



Clusia czernyi Johnson. 



Clusia czernyi Johnson, Psyche, Vol. 20, 1913, p. 100. 



Originally described from specimens obtained from the follow- 

 ing states: Maine, Vermont, Massachusetts, New Hampshire, 

 Pennsylvania, New York. 



Represented in our Laboratory collection by one female from 

 Algonquin, 111. (Nason), and one male from Alto Pass, 111., 

 May 3, 1917 (Hart and Malloch). 



Clusia lateralis Walker. 



Heteromyza ? lateralis Walker, List of Insects in British Museum, Vol. 4, 



p. 1095. 1869. 



Heteroneura spectabilis Loew, Wien Ent. Monatschr., Vol. 4, p. 82. 1860. 

 Clusia lateralis (Walker) Czerny, Wien Ent. Zeit., Vol. 22, p. 89. 1903. 



Originally described from a female specimen from North 

 America. Recorded from the following states by Johnson: 

 Maine, Vermont, Massachusetts, Connecticut, New Jersey, and 

 Pennsylvania; and also from Canada. Loew's specimens came 

 from Washington, D. C. 



