132 THOMAS SAY FOUNDATION 



Female. The head in the female is precisely like 

 that of the male. Width of front .131 of head (aver- 

 age of five,— .124, .120, .132, .134, and .141). This 

 highly interesting character does not appear to be as- 

 sociated with anything else which differentiates it 

 from the genus Sarcophaga. In the rest of its char- 

 acters the species belongs to the group of Sarcoph- 

 agas which are most closely related to each other and 

 in which the females, so far as known, are at the ]3res- 

 ent time almost or entirely indistinguishable from 

 each other. I am forced to believe that in the midst 

 of this closely interwoven series of species there exist 

 several in which the female has male head characters. 

 It is evident, therefore, that with the present limita- 

 tions of knowledge these characters could not possibly 

 be resrarded as of generic importance. 



Ocellar bristles well developed; outer vertical 

 bristles not developed; scutellum without apicals; 

 genital segment red; sixth sternite somewhat elon- 

 gated, ending with a thin expanded, almost trans- 

 parent hind margin which is almost one-third as long 

 as the sclerite itself. This is apparently a rudiment- 

 ary form of larvipositor. 



Length 6 to 7 mm. 



Three miles and five females. All from Tifton, 

 Ga., in the Hough collection; collected in June, J 896. 



Holotype. — Female, in the Hough collection. 



Allotype. — Male, in the Hough collection. 



Paratvpe. — One male, one female, No. 20516, 

 U. S. N. M. 



No. 55. Sarcophaga alcedo n. sp. 



With the same characters as excisa except the 

 following : 



Front .158 width of head. Parafrontals and 

 parafacials and front part of bucca with distinctly 

 yellow cast. Wing slightly smoky. Hind calypter 

 is light brown except the margin. 



Forceps with basal portion convex and bearing 

 rather long, recumbent hairs; beyond this consider- 



