SYSTEMATIC ACCOUNT. By 
captures. All records not credited to another collector, from the 
following localities, are from specimens that I have taken: 
Hanover, Nashua, New Hampshire; Monument Beach, Woods 
Hole, Nantucket, Siasconset, New Bedford, Fall River, Massachusetts; 
Bear Mount, New York, Staten Island, Cold Spring Harbor, New York; 
Fort Lee, Paterson, Split Rock Pond, New Jersey; Washington, 
District of Columbia; Arlington, Richmond, Virginia; Camp Jackson, 
Greenville, South Carolina; Tampa, Miami, Key West, Florida; 
Gulferest, Kushla, Mobile, Alabama; Havana, San Antonio de los 
Bafios, Santiago de las Vegas, Guareiras, Aguada Pasajeros, Cuba; 
San Jose, Port Limon, Costa Rica; Panama, Republic of Panama. 
Dr. C. W. Metz was with me at Cold Spring Harbor and at all the 
Cuban localities except San Antonio de los Bafios. The specimens 
collected at these places represent our joint efforts. 
The type specimens of all the new species described in this paper 
are deposited in the American Museum of Natural History. Most 
of the paratypes and gonotypes are in the author’s own collection. 
Aulacigaster Macquart. 1835. Suit. Buff., 2, 579. 
The European species of this genus was referred to the ephydrine genus 
Notiphila by Fallén, and to the geomyzine genus Diastata by Meigen. 
Schiner placed the genus in the Drosophilide, though admitting that it 
might easily be placed in the Geomyzide or Ephydride. Williston referred 
it to the Agromyzidz, but mentioned it under the Drosophilide. Becker, 
Melander, and Oldenberg all place it among the Drosophiline. The genus 
is aberrant here, but may be left in the subfamily as a matter of convenience, 
since it does not fit well in any of the other recognized subfamilies. 
Arista pubescent; third antennal joint orbicular; two large oral bristles; two orbitals; 
no ocellars or postverticals; one humeral; no presutural; two notopleurals; mesopleurz 
bristly; one sternopleural; two dorsocentrals; two acrostichal rows; one supra-alar; no 
postalar; no prescutellars; two pairs of scutellars; costa twice broken; auxiliary reaches 
costa, but is fused with the first vein for a short distance; discal and second basal cells 
confluent; anal cell and vein present; no evident preapicals. Three chitinized sperma- 
thecz, in which respect the form differs from Drosophila, Scaptomyza, Chymomyza, Leuco- 
phenga, and Mycodrosophila, in all of which only two spermathece are present. 
There is a single described species, common to Europe and the United 
States. In Europe it has been recorded from Scotland and Sweden to 
France, Italy, and Hungary. Williston (1908, Manual N. Amer. Dipt., 
p. 293) has recorded a species from the West Indies, but this form has 
never been described, and it is not certainly known whether it represents a 
second species or not. Our only species is Aulacigaster leucopeza Meigen 
(1830, Syst. Beschr., 6, 100, as Diastata) = Aulacigaster rufitarsis Macquart 
(1835, Suit. Buff., 2, 580). 
Specimens examined: Hungary (Kertész det.); Italy (Bezzi det.); 
Hanover, New Hampshire; Woods Hole, Norwood (W. Reiff), Massa- 
chusetts; Ithaca, New York (H. Morrison); Pittsburgh, Pennsylvania 
(H. Kahl); La Fayette, Indiana (J. M. Aldrich); Flat Rock (F. N. Dun- 
ean), Carlinville (U. S. Nat. Mus. coll.), Illinois; Marlboro (H. 8. Barber), 
Plummer’s Island (W. L. McAtee), Maryland; Washington, District of 
Columbia (U. 8. Nat. Mus. coll.); Dead Run, Virginia (R. C. Shannon); 
Kushla, Alabama. 
