AMERICAN DIPTERA. 341 



two spines situated at the tip on the inner side and directed 

 inward at a distinct angle, but the abdomen is shorter, of 

 nearly equal width throughout and more cylindrical. 



Head a trifle broader in proportion than in Callinicus; face 

 very broad, of nearly equal width throughout, without pro- 

 tuberance, somewhat swollen, distinctly visible in profile, 

 everywhere clothed with sparse, short hair, on the oral margin 

 with longer but not dense weak bristles. First two segments 

 of antennse short, the second a trifle shorter than the first; 

 the third longer than the first two taken together, of nearly 

 uniform width, tapering somewhat toward tip; style short, 

 thick, tapering, two-jointed, the first segment very short, 

 "collar-like," the second longer and bearing a minute distal 

 spine. Basal segments of antennae with bristly hair above 

 and below. Front subequal in width to the face, not notice- 

 ably widened above, the vertex distinctly depressed, ocellar 

 tubercle rather large, and bearing bristles. Thorax moder- 

 ately well arched, with rather prominent bristles, especially 

 on the posterior portion of the dorsum; on the anterior por- 

 tion they are much shorter and arranged in an indefinite line 

 on either side of the median stripe. Scutellum with two or 

 three well-developed bristles on either side of the posterior 

 margin. Abdomen elongate, but shorter in proportion than 

 in Callinicus, more cylindrical, of nearly equal width through- 

 out in the male, in the female, slightly tapering toward the 

 tip; in both nearly bare; male genitalia very small, some- 

 what resembling those of Cerahirgus or Dizonias; female ovi- 

 positor with a circlet of spines. Legs moderately stout, the 

 front tibiae not armed at tip with a true terminal claw as found 

 in Deromyia, but with one or two straight stout spines ac- 

 companied by several other slightly weaker ones; the middle 

 tibiae at tip on the inner side armed with two spines projecting 

 inward at a distinct angle; hind metatarsi proportionately quite 

 long; pulviUi normal. All the submarginal and posterior cells 

 widely open, the anal cell narrowly so. 



Type. — Laparus ? pictitarsis Bigot. . 



TRANS AM. ENT. SOC, XXXV. AUGUST, 1909 



