Described from 1 $ specimen. This specimen was bred. Decembei 
L88 I, from the puparinm of a Tachinid, the larva of which was found 
with the eggs of Caty Hants Biley, at Boscawen, >". II.. I 
7. 1883. The Tachinid larva showed no signs of being infested, and ti 
formed to an apparently healthy pnpa. fC. V. K. Coll.] 
Genua IIaltichella Spinola. 
Head triangular ; ey< a large. Antenna? inserted contiguously, near the month; - 
reaching to the ocelli. Anterior wings with a short marginal vein. 
stigmal and still shorter post-marginal. Abdomen ovate, second segment somewhat 
flattened above. Posterior femora smooth below, or obtusely bidenl 
Tibiae with two spurs, middle with one. 
12. (1) Haltichella americana. n. sp. 
Female. — Length, 4 : - ,ni . Head and thorax densely and coarsely punctured, more 
y on occiput. Color black, with whitish pile. Front coxa.', and femora black, 
tibia? ferruginous at either end. tarsi ferruginous: middle legs the same: hind legs 
entirely black, tarsi ferruginous. Wings very slightly dusky under the stigma. 
Described from 2 9 \s, both collected at Washington, D. C. [O. V. K. 
Coll.] 
Approaches very closely H. armata (Panz.) of Europe, but differs in 
the completely black antenme and the nearly clear wings. 
Sub family E^XYRTI^^E. 
The eight genera of this subfamily, which are represented in the collec- 
tions, maybe separated as follows, the females alone beiug considered: 
A. Scutellum with a tuft of stiff hairs at tip CHILONKUBUS. 
B. Scutellum with no such tuft. 
a. Head with very deep, large, and regularround impressions BOTHBIOTH< 
b. Head with no such sculpture. 
a. Head thickly and finely punctate, antenna! club often obliquely truncate. 
Coi 
b. Head nearly smooth, antennal club always strongly obliquely trun< 
HoMAL' VTYLUB. 
c. Antennal club not obliquely truncate. 
aa. Mesonotum lusterless Apiiycus. 
bb. Mesonotum shining with a metallic luster. 
aa. Antenna' extremely long and thin: no marginal vein PSLLOPl 
bb. Antenme very long and thin; marginal vein longer than stigma. 
LSPTOMASTIX. 
cc. Antenme not specially long \. ■ 
In the Annual Report for 1880 I described twelve species of this sub- 
family, all of which were parasitic upon bark-lice. I here describe 
twenty-three additional species, bnt of these only eight are bark-louse 
parasites, three are parasitic upon Psyllidae, live upon Lepidopterooa 
larvae, one upon a Coleopterous larva, and two upon Dipterous Larva, 
while the hosts of four are unknown. Ot these four the strong p; 
bilities are that one is parasitic upon some Dipterous larva, one upon a 
Lepidopterous, and the other two upon bark-lice. 
