oa THE NORTH AMERICAN SPECIES OF DROSOPHILA. 
Recorded from Kansas (Kahl) and Texas (Loew). 
The species is not uncommon about bleeding trees, and I have taken it 
on a garbage pail. 
Curtonotum Macquart. 1843. Dipt. exot., 2, 3, 193. 
Diplocentra Loew. 1859. Zeitschr. ent. Breslau. 13, 13. 
Like Aulacigaster and Apsinota, this genus has a well-developed auxiliary 
vein, so that its position among the Drosophiline is somewhat doubtful. 
The arista is long plumose; two prominent orbitals, placed unusually far 
from the eyes, with a minute bristle between them; vibrissz large; ocellars 
and postverticals large; eyes relatively small, nearly bare; carina small, face 
slightly convex; front with a few small scattered hairs; two humerals; one 
presutural; two notopleurals; two supra-alars, anterior one small; two 
postalars; two dorsocentrals; one prescutellar; two pairs of scutellars, 
posterior one convergent; disk of scutellum hairy; mesonotum strongly 
convex; one small propleural; mesopleurz with a few large bristles (near 
posterior margin) and numerous hairs; two or three sternopleurals; pre- 
apicals on all tibiz; costa pectinate, weak between tips of third and fourth 
veins; discal and second basal cells confluent; anal cell and vein well 
developed; first posterior cell not narrowed at apex; costa twice broken. 
Macquart based the genus on a single species, the South American Musca 
gibba Fabricius, which thus becomes the type species. This form had been 
referred to the genus Helomyza by Wiedemann; and Schiner placed the 
genus in the Helomyzidx. Loew and Osten Sacken both referred it to the 
Geomyzidz, but it is now placed among the Drosophiline by common 
consent (e. g., by Aldrich, Hendel, Melander, Oldenberg, and Williston). 
It is perhaps most conveniently left here. 
There is one Palearctic species (C. anus Meigen), one Oriental (C. arenata 
Osten Sacken, from the Philippines), two Ethiopian (C. pictipennis Thomson 
and C. fuscipennis Macquart), one Nearctic (C. helua Loew), and twelve 
Neotropical. 
The Neotropical species have been tabled and discussed by Hendel (1913, 
Deutsch. ent. Zeitschr., 619). Curtonotum decumanum Bezzi, from Para- 
guay, has been described since (1914, Deutsch. ent. Zeitschr., 199). The 
only ones of these known from our region are C. gibbwm Fabricius and 
C. simplex Schiner, reported from Mexico by Giglio-Tos. ‘The single 
Nearctic species is discussed below. 
Curtonotum helva Loew. 1862. Berlin ent. Zeit. (as Diplocentra). 
Specimens examined: Brattleboro, Vermont (C. W. Johnson); Cohassett 
(O. Bryant), Chester (C. W. Johnson), Cambridge (C. W. Johnson), Woods 
Hole (on windfall apples), West Chop (C. W. Johnson), Massachusetts; 
Buttonwoods, Rhode Island (C. W. Johnson); Orient, Long Island, New 
York (J. L. Zabriskie); Westville, Riverton, New Jersey (C. W. Johnson); 
Chesapeake Beach, Maryland (J. M. Aldrich); Virginia Beach, Virginia 
(F. C. Pratt); Valley of Black Mountains, North Carolina (W. Beuten- 
muller); Georgia (Morrison); La Fayette, Indiana (J. M. Aldrich); Chi- 
cago, Ilhnois (Aldrich coll.). The type material came from ‘‘ North Red 
iver.” 
The breeding-habits of the genus are apparently unknown. Mr. Johnson 
tells me that C. helva is to be collected by sweeping in high grass in moist 
places, such as are frequented by Sciomyzine. 
Nors. Since the above was written I have seen Enderlein’s paper (1917. Zool. Anz. 
49; 68-72) dealing with Curtonotum. He describes two new species from South America 
