Lz2 Annals Entomological Society of America [Vol. VIII, 
an egg was later found and dissected out. The egg punctures, 
which can be found on all sides of the berry, appear as small 
brown spots, visible to the naked eye, and sometimes with a 
distinct opening. The fact that the flies appear so late, as 
compared with other members of the genus, is another example 
of the adaptation of the time of emergence to the proper stage 
of the development of the particular fruit. The larve mature 
about October 9, although a few were found in the berries 
October 27. They pupate about an inch below the surface of 
the ground. On October 8, however, some were found to have 
pupated within the berries, which had been picked about two 
weeks previous, and kept in a glass jar. Two or three pupa 
were often found within these berries, and once even five, 
although the berries when examined on the tree, were found to 
contain but one larva. No holes of any kind were visible on 
those berries which had been kept in the glass jar. The larve 
eat the fleshy portion of the normal berries and as the young 
trees have a greater proportion of normal berries, they are 
much more numerous there. 
Female.—Length 3.2 to 4.2 mm.; thorax 1.38 to 1.8 mm. General 
color, black; head yellowish or brownish; ocellar area dark with space 
between ocelli and compound eyes more or less suffused with brownish; 
occiput yellowish brown, except for a few darkened areas which are some- 
times arranged radially; antenne brownish, with the anterior corner of 
last joint rather sharp; arista black, except for proximal portion; 
bristles black, except for the post-verticles, which are yellowish. The 
three facial pairs of bristles convergent, the ocellar pair strongly 
proclinate, the two fronto-orbital, and vertical pair strictly reclinate 
(Fig. 6, Pl. XIII). 
Thorax shining black with four longitudinal, yellowish bands on 
dorsum—the inner pair projecting farther forward, and confluent in 
front. Scutellum black, except for a white rectangular spot on the 
hinder portion; halters yellow. A striking, bright, alabaster-colored 
band runs from the humeri to the base of each wing. The thoracic and . 
four scutellar bristles, black. 
Abdomen, shining black; posterior border of segments 2, 3, 4, and 5, 
with a rather broad band of white, the band of the 6th much narrower. 
Femora, except tips, black, front pair often lighter; tibiz, trochanters, 
and tarsi except tips, yellowish-brown; cox black, lighter at tip. 
Wings hyaline, marked with four brown cross bands, as in R. ribicola 
Doane. The first is somewhat oblique, and runs from the humeral vein 
to the sixth longitudinal vein, along which it gradually fades out beyond 
the posterior basal transverse vein. The second is much broader, nearly 
perpendicular, begins on the costa, between the tips of the axillary and 
