102 THE ENTOMOLOGIST. 
Halictus regis, sp. n. 
?. Length a little over 5 mm., anterior wing about 4°6; black, 
with thin pale hair; facial quadrangle longer than broad; clypeus 
projecting; cheeks broad; clypeus shining, with scattered punc- 
tures; front dull, densely and minutely punctured; upper orbital 
margins narrowly shining; sides of vertex dull; flagellum clear 
ferruginous beneath ; mesothorax somewhat shining, very minutely 
punctured and microscopically lineolate; area of metathorax not 
defined, with very delicate irregular plicee mainly confined to the 
basal part; posterior truncation small, sharply defined at sides 
except the upper fourth ; tegule rufopiceous; wings greyish hyaline, 
stigma and nervures pale dull testaceous ; legs black, with pale hair ; 
hind spur with short saw-like teeth ; abdomen shining, especially 
basally ; no hair-bands, but slightly indicated thin hair-patches at 
basal corners of second and third segments. 
Hab.—Kingston, Colorado, at flowers of F'rasera, just above 
timber-line, July, 1915 (L. A. Kenoyer). Close to H. dasiphore, 
but considerably smaller, with the area of metathorax quite 
differently sculptured. 
A NEW GENUS OF TRICHOGRAMMATIDA FROM 
AUSTRALIA CHARACTERISED BY BEARING A 
POSTMARGINAL VEIN. 
By A. A. GrrauLt. 
With the exception of Pseudubrachysticha semiaurea, Girault, 
which bears a short, triangular postmarginal vein, the following 
new species is the only member of the family yet known to me 
which has that vein distinct. 
Thoreauia, new genus. 
Female.—Similar to Pseudoligosita, Girault, but neither the pedicel 
nor funicle is elongate, the funicle joint being subglobular (wider than 
long) the, pedicel twice its length, two and a quarter times longer 
than wide at apex. There are the following additional differences : 
The body is slender, the thorax and abdomen each long, the latter 
somewhat longer than the former, distinctly compressed and with the 
valves of the ovipositor slightly, distinctly extruded ; the pronotum 
is prolonged over the head in the form of a button-like medial pro- 
jection. The long scutum seems to be divided transversely at distal 
three-fourths, leaving a crescentic sclerite between it and the 
scutellum, the suture being concave. Caudal femora swollen, 
coarsely scaly. All tibia dorsad armed with four or five weak, seti- 
gerous teeth. No oblique hairless line from stigmal vein. Mandibles 
