378 Annals of the Carnegie Museum. 



The type is from Florida. Mr. Johnson records it from Florida and New Jersey. 

 The writer has taken it on windows and reared it from the same mushroom as L. 

 quadrimaculata (see under that species) at Urbana, Illinois, and also has taken it on 

 windows at Lawrence, Kansas, and Pittsburgh, Pennsylvania. 



By a mere slip of the pen Mr. Johnson places Drosophila villala Coquillett in the 

 genus Leucophenga, instead of Drosophila maculosa Coquillett (Bull. Am. Mus. Nat. 

 Hist., XXXII, p. 88 (1913))- 



5. Leucophenga argenteiventris sp. nov. 



Diagnosis: Head and antennae yellow. Palpi boney-yellow, com- 

 pressed, quite large. Mesonotum and scutellum opaque, light red- 

 dish, densely covered with a white bloom. Legs pale yellow. Abdo- 

 men silvery white. Wings yellowish hyaline with two dark brown 

 costal spots, one near the base, the other longitudinally oval on apex 

 of second vein; anterior and posterior cross-veins bordered with dark 

 brown; apex of third vein fuscous and bordered by same color; second 

 vein slightly curved at apex. Length 2.5 mm. 



Description: Head with front j'ellow and orbital stripes grayish. The front 

 immediately above the antennae is more orange-colored and its width is about one- 

 third of the head. Face whitish yellow with a slight carina near the antennae. The 

 upper concave part of occiput blackish, with orbits narrowly, but along vertex 

 widely, yellow. Third antennal joint pale yellow, rather short, hardly longer than 

 wide. Arista yellow at base, otherwise together with its rays blackish brown. 

 The rays are apparently six above, three or four below. Palpi (in the specimen) 

 deep yellow, compressed, and quite large. Cheeks very narrow. 



Mesonotum and scutellum opaque, pale yellowish red, and, as seen from front, 

 covered with a white bloom, which is particularh' in evidence on the distinctly 

 convex scutellum. Mesonotum with the minute black setulae in eight rows between 

 the anterior pair of dorso-central bristles. Scutellum with pale margin. Humeri, 

 notopleura, and pleura opaque, paler than the rest of thorax. Legs rather pale 

 yellow; tibiae with a minute preapical setula. Halteres yellow. 



Abdomen darker in ground-color than mesonotum, brown-red, with the setulae 

 black. Viewed from front or side the abdomen is silvery white, best shown on 

 segments two, three, and four. The extreme apex of abdomen is yellow. (The 

 apical segments show some blackish or dusky in the specimen, but this may be 

 caused by deterioration). 



Wings a little pointed, yellowish hyaline, with the yellowish becoming gradually 

 hyaline posteriorly; a dark brown spot at base from costa to fourth vein and cover- 

 ing extreme apex of costal cell, bases of marginal and submarginal cells, and middle 

 of first basal; an oval spot of same color along apex of second vein, covering apex of 

 marginal cell and extending about two-thirds into the submarginal cell; anterior 

 cross-vein narrowly and posterior cross-vein quite broadly bordered with dark 

 brown; apex of third vein and its immediate surroundings infuscated, this color in 

 a diluted form extending into the apex of the submarginal cell. 



