PARKER: NEW ENGLAND SARCOPHAGIDAK. 4'A 
the iiicinbrunc which coniu'cts the genital .segments with the ahdonien 
proper bears a short row of long, slender hairs on each side just anterior 
to the 'humps.' 
Genital scgmoits. — The first segment presents the following charac- 
ters: color, shape, size, outline in profile, vestiture, and the presence 
or absence of marginal and other bristles. The color varies from 
shining to dull orange; and in either case may be wholly or in part 
grayish pollinose, often with the reflecting colors of the abdomen. 
When dull orange the segments may sometimes be partly yellowish or 
golden pollinose. The ' humps ' are sometimes the same color as the 
remainder of the segments, sometimes not. In Sarcoyhaga dabnatina 
Schiner a blackish brown band traverses the posterior part of the seg- 
ment, while in S.falculufa Pandelle this color extends forward to the 
* humps.' The factor of shape is not important within the limits of this 
paper, but in other genera such as Agria Desvoidy,^^'ohlfartia, etc., the 
segment is ' humpbacked ' (buckelig) bearing a second line of bristles 
on the protuberance. A certain undescribed American Sarcophaga 
approaches this condition, but the protu})erance is not pronounced 
nor does it bear bristles. The size of the segment in this species is ver\' 
large compared to that of the second which is scarcely more than a 
disc on its posterior surface. In Ravinia the second segment tends to 
be the larger, though this is not always apparent until the segments 
have been pulled out. The profile outline is generally slightly convex, 
but may be slightly depressed just forward of the marginal bristles as 
in our New England species of Boettcheria and in meml)ers of the 
assidiia group (Sarcophaga). The surface of the segment is clothed 
with scattered hairs; in Ravinia quadrisetosa (Coquillett) they are 
almost minute. Ordinarily they are not present on the 'humps' 
and are shorter than those borne on the second segment, but in the 
subspecies of Sarcophaga tuherosa Pandelle (I have not seen specimens 
of the species itself) both these conditions are found. These species 
with others, also lack marginal bristles, though in most others they are 
present. Aside from these bristles, no others are present in the 
genera considered with a single possible exception. 
The second genital segment differs, aside from the forcei)s and the 
appended penis and its accessory structures, in color, shape, size, 
presence or absence of bristles, and the size of the anal area. The 
color, like that of the first, varies between black and dull orange, and 
may be the same or different but is less commonly pollinose except in 
