16 PROCEEDINGS OF THE NATIONAL MUSEUM. von. 62. 
Type locality.—Holotype, a male, taken at Alamogordo, New Mex- 
ico, April 26, 1902. 
Type.—In the collection of the Philadelphia Academy of Natural 
Sciences. There are seven paratypes, two deposited in the National 
Museum, the others in the collection with the types; all were taken 
in the type locality, April 22 to May 1, 1902. 
Paratype.—Male, Cat. No. 25926, U.S.N.M. 
CAENOTUS INORNATUS, new species. 
Plate 1, figs. 1, 2, and 3. 
Male.—Length 5.5 to 6.5 mm. Very nearly like 0. minutus in 
general structure, color, and habitus. The pile of the thorax is a 
little thicker and more yellowish. The yellowish lobes of the geni- 
talia are very much the same. Knees, hind tibiae, except apices, 
basal portion of two front pairs of tibiae and base of hind metatarsi, 
yellowish; spines on tibiae stronger than in (C. minutus. Halteres 
as in the above species. Wing venation nearly the same as in (0. 
minutus, but Cu-1 and M-3 are united for a short distance near the 
base and end separately and wide apart in the wing margin. There 
is No m-—cu cross vein or cell M-3. (See fig. 2.) 
Female—Length 8.5 mm. Head and thorax colored much as in 
the male. Head appears proportionately small and is black in ground 
color and gray pollinose; cheeks show slightly below the eyes. First 
two joints of antennae short pilose; antennae distinctly separated at 
the base. rons pollinose and very short yellowish pilose; a 
depressed, shining median line from front ocellus to base of antennae; 
frons narrower at the ocelli, gradually widening below. 
Pile of thorax much shorter than in male and more reclinate; pile 
of scutellum and pleura white and shorter than in male. Abdomen 
quite large at base and about three times as long as the thorax, the 
pile short, very sparse, and yellowish. The first three segments 
almost entirely shining blackish, incisure between second and third 
white; posterior margins of third and fourth yellowish; fifth, sixth, 
and seventh segments are largely shining brownish yellow. Venter 
colored much as the dorsum. Spines of the genitalia yellow. Coxae 
brown; femora and tibiae brownish yellow, the hind legs paler; tarsi 
except base of first joint brown, the spines more apparent because of 
the larger size of the specimen; front and middle tibiae about equal in 
length, the hind tibiae about half again as long. Wing venation 
about the same as in the male. In one wing of the type M—2 curves 
down to meet M-3 and Cu-1 slightly before the wing margin, in the 
other wing it goes straight out to the margin; the wings are faintly 
brownish yellow. 
Type locality Holotype, a male, collected at Alamogordo, New 
Mexico, May 5, 1902, and allotype, a female, from the same locality, 
taken May 12, 1902. 
