June, 1911.] 
Two Species of Diptera. 
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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 very 
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 
former 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 marked 
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 yellow 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 
backward; 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. 
