334 Annals Entomological Society of America [Vol. IX, 



Acrostichal hairs in six rows; no prescutellars. Dorsum of thorax 

 and scutellum dull blackish brown; pleurae brown. Legs pale yellowish 

 brown: apical and preapical bristles on first and second tibiae, only 

 preapicals on third. 



Abdomen shining dark brown, basal segments with lighter median 

 dorsal and anterior lines. 



Wings clear, veins brown. Costal index about 4.0; 4th vein index 

 about 1.8; 5x index about 1.3; 4c index about 0.7. 



Length of body l^mm., wings 13.4mm. 



Type and two paratypes. Dead Run, Fairfax County, 

 Va., April, 1914 (R. C. Shannon). One specimen, Cabin John 

 Bridge, Md., March, 1914. (Shannon). 



This species may be distinguished from D. melanica, n. sp. 

 and the other members of its group by the two large oral 

 bristles, narrow face and front and small size. 



Drosophila affinis, n. sp. 



(^ . Arista with five branches above and two below. Antennas 

 brown, third joint nearly black. Front nearly one-half width of head, 

 wider above; dark brown, lighter below, orbits and triangle pollinose. 

 Second orbital three-fourths third, which is three-fourths first. Carina 

 low, very narrow above; face dull brown. Second oral bristle scarcely 

 one-fifth first. Cheeks grayish brown, their greatest width about one- 

 sixth height of eyes. Eyes with short pile. 



Acrostichal hairs in six rows; no prescutellars. Dorsum of thorax, 

 scutellum, and pleurae coffee brown. Legs pale brownish yellow. 

 Apical and preapical bristles on first and second tibiae, preapicals on 

 third. A comb-like row of black bristles on the inner anterior surface 

 of the first tarsal joint of each front leg, as in the male of D. melanogaster 

 Meig. 



Abdomen very dark brown, lighter toward the base. 



Wings clear. Costal index about 3.G; 4th vein index about 2.6; 

 5x index about 2.0; 4c index about 1.2. 



Length body 2mm., wings 2>'4mm. 



Type bred from banana, Kushla, Alabama, April 25, 1915. 

 Twelve paratypes, Kushla, Alabama. The females agree with 

 the above description, except that they have no combs on the 

 first tarsi. I have examined numerous specimens from the 

 United States, the following states being represented: Massa- 

 chusetts, New York, New Jersey, Indiana, Alabama, Texas, 

 Illinois, Pennsylvania, Missouri, Oklahoma, New Hampshire, 

 District of Columbia, Maryland, Georgia, North Carolina and 

 Virginia. 



