THREE NEW SPECIES OF ANTHO^IYID^ (DIPTERA) IN 

 THE UNITED STATES NATIONAL MUSEUM COLLECTION. 



By J. R. Malloch, 



Of the Bureau of Entomology , United States Department of Agriculture. 



The three species herein described have been standing in the 

 United States National Museum collection without names for several 

 years, and in working over some Anthomyidse belonging to the Division 

 of Cereal and Forage Crops I had occasion to compare them with 

 some specimens contained therein. " I consider it advisable to publish 

 descriptions of those new forms, as probably they are present in other 

 collections also without names. 



TETRAMERINX FEMORATA, new species. 



Male and female. — Black, shining. Mesonotum unstriped. Abdo- 

 men with large, paired, subtriangular spots. Legs black, tibia brown- 

 black. Wings clear. Calyptrse white. Halteres yellow. 



Male. — Frons distinctly over one-third the head width, center 

 stripe, viewed from behind, opaque black, intersected by the whitish 

 pollinose, wedge-shaped frontal triangle to the anterior margin, 

 viewed from in front the whole stripe is whitish poUinose; orbits 

 narrow, whitish pollinose, four orbital bristles present, which increase 

 in length from the posterior (upper) one to the moderately long 

 anterior one and become slightly wider spaced; antennas elongate, 

 third joint about four times as long as second, reaching almost to 

 mouth margin; one weak bristle on dorsal surface of second joint; 

 arista almost bare, thickened on almost the basal half, basal joints 

 short; face and cheeks with silvery white pollinosity; cheek about 

 one-sixth as high as eye, marginal bristles numerous, downwardly 

 directed, of moderate strength, vibrissse differentiated; palpi linear, 

 black, with a few long hair-like lower marginal bristles; proboscis 

 of good length, glossy black-brown on apical half. Mesonotum 

 grayish pollinose, with very faint indications of three stripes, the 

 center one double; four post-sutural bristles, the two pairs behind 

 suture weaker than the two presutural pairs; acrostichals 3-rowed; 

 pleurae with faint grayish pollinosity. Abdomen short, not longer 



Proceedings U. S. National Museum, Vol. 45— No. 2004. 



603 



