76 THE NORTH AMERICAN SPECIES OF DROSOPHILA. 



Acrostichal hairs in six rows; no presculcllars. Two large humeral bristles. Meso- 

 notum dull reddish-yellow, with a pair of darker longitudinal stripes and dark areas on and 

 behind the humeri. Scutellum reddish yellow. Pleurae pale yellow, a reddish line running 

 forward from base of wing; darker above this hne. Legs pale yellow. Apical bristles 

 evident only on second tibia;, preapicals only on third. 



Abdomen dull reddish-yellow, with posterior black bands on four basal segments. 



Wings clear. Costal index about 1.9; fourth-vein index about 2.0; 5x index about 1.8; 

 4c index about 1.4. 



Length body 2.0 mm.; wing 2.0 mm. 



Specimens examined: Adjuntas, Porto Rico (Lutz and Mutchler, type 

 material); San Francisco Mountains, Haiti (A. Busck). 



Some of these specimens are a little smaller and have the dark markings 

 scarcely visible. Since intermediates are present, it seems probable that 

 these differences are due to age. 



Drosophila quadrata Sturtevant. 1916. Ann. Ent. Sec. America, 9, 341. 



cf, 9. Arista with about six branches above and three below. Antenna; brown. 

 Front one-half width of head, wider above; pale yellow. Second orbital not larger than 

 neighboring hairs. One large vibrissa, other oral bristles reduced practically to hairs. 

 Carina low and narrow, face broad and excavated on each side of it; face yellow. Proboscis 

 yellow, palpi dark brown. Cheeks yellow; their greatest width about one-fifth greatest 

 diameter of e\Tels. Eyes with yellow pile. 



Acrostichal hairs in eight rows; no prescutellars; the anterior dorsocentrals are only a 

 little behind the transverse suture. Only one large humeral bristle. Mesonotum, scutel- 

 lum, pleura;, and legs dull brownish-yellow. There is a dark-brown stripe on the pleura 

 extending as a straight band from just under the haltere almost to the neck. Below this 

 stripe the pleura is paler. Apical bristles evident only on the second tibiiB, preapicals 

 only on third. 



Abdomen yellow, each segment with a dark-brown posterior margin. 



Wings clear. Costal index about 1.0; fourth- vein index about 5.5; 5x index about 6.0; 

 4c index about 5.0. 



Lengith body 1.8 mm.; wing 2.0 mm. 



Specimens examined: Kushla, Alabama, April 1915 (type material); 

 Tifton, Georgia, October 1896 (Melander collection) ; La Fayette, Indiana, 

 July 1915 (J. M. Aldrich). 



I collected this species by sweeping, and was unable to get it to breed on 

 fruit. 



Drosophila poeyi, new species. 



cT. Arista with about five branches above and two below. Antennae brown, third 

 joint long, darker. Front slightly over one-third width of head; yellow-, with two reddish 

 stripes converging below, ocellar dot dark brown. Second orbital about one-haK other two. 

 Only one prominent oral bristle. Carina high, narrow; face brownish yellow. Proboscis 

 dark. Cheeks j^ellow; their greatest width about one-sixth greatest diameter of eyes. 

 Eyes with sparse pile. 



Acrostichal hairs in six rows; no prescutellars. Two large humeral bristles. Meso- 

 notUm yellow, with six shining reddish-brown stripes, as follows : the broadest pair between 

 the dorsocentral rows, a narrow pair including the dorsocentral rows, and a pair outside the 

 dorsocentral rows reaching only as far forward as the suture. Scutellum shining reddish- 

 brown, with yellow lateral margins. Pleurae and legs pale yellow. Apical bristles evident 

 only on second tibiae, preapicals only on third. 



Abdomen blackish brown, fourth and fifth segments pale yellow. 



Wings clear. Costal index about 2.0; fourth-vein index about 2.0; 5x index about 1.7; 

 4c index about 1.2. 



Length body 2.0 mm.; wing 2.0 mm. 



Type and two paratypes; on window, Poey Museum, National Uni- 

 versity, Havana, Cuba, January-February 1915. 



