June, 1911.] Two Species of Diptera. 375 



truncated bearing dorsad a pair of blunt tubercles and a longer 

 pair situated laterad of the caudal spiracles. The dorsal surface 

 of the abdomen bears six rows of tubercles, segmentally arranged, 

 the two outer rows larger than the other four which are ver}^ 

 small; laterad of each outer row is a row of small tubercles. The 

 mouth is armed with two strong black curved parallel hooks 

 which are used in rasping the food. The black oral hooks and 

 the two pair of spiracles are visible to the naked eye but their 

 structure can only be made out by the aid of the microscope. 



Pupa. Fig. le. The pupa is shorter than the larva, about 

 three and seven-tenths (3.7) millimeters in length but much 

 thicker. The cephalic and caudal spiracles projecting, the 

 fonner very conspicuously; the two larger rows of tubercles 

 visible. There is a large concavity on the dorsal surface of the 

 cephalic end. 



Adult. Fig. 1. Head and thorax yellow, with black bristles and 

 hairs; two rusty yellow frontal vittae; two pairs of outer vertical 

 bristles; three pair of orbital bristles, the anterior pair directed 

 forward the others backward; a few short bristly hairs at the base 

 of each antennae. First two joints of antennae dark rusty yel- 

 low, the third dark brown. Fig. lb. Black ocellar dot. Eyes 

 pale red; mouth parts yellow. Dorsal surface of abdomen inarked 

 sometimes by five black vittae, usually four, of which the medium 

 one is forked posteriorly; the pleuron marked by three black 

 vittae. Abdomen black, a median yellow vittae. the first seg- 

 ment light rusty yellow, the others marked anteriorly by yellow 

 cross bands; legs yellow; wings hyaline, the costa reaching to the 

 fourth longitudinal vein. . 



Drosophila funebris Fab. This species is common to Europe 

 and North America and its habits resemble the species Drosophila 

 ampelophila, described by Comstock. It is recorded as breeding 

 in rotten cherries and in the waste of pressed olives. 



Adult. Fig. 2. Thorax rusty yellow, a little glossy, marked 

 with dark spots giving it a brownish appearance; abdomen broad, 

 black, a median pale yellow vittae, the first segment usually black 

 the others marked at outer angles by 3"ellow cross bands and a 

 pale yellow line, often whitish, at the posterior border; under side 

 of face yellow; front broad dark rusty yellow, above the antennae 

 lighter; a black ocellar dot; three pair of orbital bristles, the two 

 bristles composing the anterior pair directed forward, the others 

 baclcward; pair of ocellar bristles; two pairs of outer vertical 

 bristles, pair of median vertical bristles; antennae reddish yellow, 

 third segment the longest, often dark; arista long, for a distance 

 plumose, the under side of the basal part naked; legs pale yellow 

 often becoming darker; wings of a very pale yellow tint, veins 

 rusty yellow; the distance between the two cross veins somewhat 

 smaller than the ultimate segment of the fourth longitudinal vein. 



