228 PROCEEDINGS OF THE NATIONAL MUSEUM vol. loo 



bristle on the mid tibia is also unusual in the genus, being found 

 elsewhere only in Odinia hendeli Collin from Europe. 



2. Odinia conspicua, new species 



Large species with broad front, gray mesopleuron, and especially 

 large and conspicuous spots on fore and hind crossveins of the wing. 



Male: Chiefly gray-black; head yellowish gray, the lunule, face 

 and cheek silvery gray, yellow in ground color; antenna, palpus, 

 and proboscis orange yellow, the slender portion of arista brown; 

 thorax black in ground color, bright gray pollinose, the humerus, and 

 disk of scutellum except basally, yellowish; pleuron gray, only the 

 sternopleuron slightly browned about bases of sternopleural bristles; 

 abdomen gray with first two terga chiefly brown, fom- small and 

 indistinct spots on terga three to five, and most hairs and bristles 

 set in small brown spots ; legs predominantly yellow, the fundamental 

 pattern as described in biguttata, only weakly indicated; wing as in 

 figure 2, the spots strong and black, those on crossveins especially 

 strong and distinct, and dark clouds about the apices of second and 

 third veins ; all hairs and bristles black. 



Front very broad, its breadth at vertex 1.2 times the length, 2.13 

 times the width of an eye, and slightly over half the width of the head, 

 rather uniformly pollinose, the orbits and frontal triangle not clearly 

 delineated, anterior margin strongly emarginate, revealing the large, 

 semicircular lunule; each orbit with a few erect, black hairs on outer 

 half between upper orbital bristle and the verticals; head in profile 

 higher than long by 1.6 times, length at base of antenna 1.8 times 

 that at vibrissa, the front sloping and the long axis of eye diagonal; 

 cheek relatively broad, 0.42 times the height of an eye and 0.29 times 

 the height of the head; vibrissa and oral bristles slender; antenna rela- 

 tively small. Mid tibia with two strong, subequal apical ventral 

 bristles; hind femur incrassate, 2.12 tunes as long as broad, with 

 a strong, preapical anteroventral bristle followed by several weaker 

 bristles; hind tibia shorter than hind femur; hind tarsus somewhat 

 broadened distally. Third wing vein rather strongly arched. 



Female: As described for male, but the hind femur not strongly 

 incrassate, and anteroventral bristles stronger, with two bristles 

 outstanding on distal third. 



Length of body and of "^ving, 5 mm. 



Holotype male (USNM 64273), "Jackson's Island," Md., July 3, 

 1911, P. R. Myers. Allotype (USNM), Atlanta, Ga., June 3, 1941, 

 P. W. Fattig, Paratypes (all in USNM) : male, same data as holotype; 



