122 
raised; fovea shallow; clypeus truncate; antenne stout, tapering, 
fourth joint longer than third; first transverse cubital wanting; claws 
with minute inner tooth. Color black, shining; distinct pubescence on 
pleura; apex of clypeus, labrum, extreme angles of pronotum, tegule, 
and legs for the most part yellow; cox black basally; posterior 
tibiw at tips and their tarsi infuscated; wings hyaline; veins light brown; 
genitalia yellow. 
One male. Colorado. (Coll. Am. Ent. Soe.) 
XVII. Genus GYMNONYCHUS nov. gen. 
[From yvpuvos, naked, and ovvé, claw. | 
Body short, ovate; antenne short, filiform, third joint longest; venation of Pris- 
tiphora, second cubital with both recurrent nervures; lanceolate cell petiolate; 
stigma ovate; tip of clypeus more or less emarginate; pentagonal area ‘of vertex 
indistinctly outlined or wanting; claws simple, without inner tooth; sheath of 
female simple, obtusely pointed at tip. 
This genus is separated from the preceding, Pristiphora, by the posses- 
sion of a simple claw, without inner branch or tooth. The type of the 
genus is the species designated as californicus. HKxamination of the 
species of Pristiphora indicates also that appendiculatus Hartig (=gros- 
sularie Walsh) falls in this genus. These two species are very impor- 
tant ones economically, the latter being a well-known enemy of the 
gooseberry and the former reported to be a very serious enemy to the 
pear in various localities in California. 
TABLE OF SPECIES. 
Very short, rcbust; angles of pronotum broadly yellow. 
Clypeusiand labrom blacks. sees - sees eee eee 1. californicus n. sp. 
Clypeusrandilalbmum) pale esse ee es esee =e een eas = aeee 2. proximatus Norton. 
Somewhat less robust; pronotum unicolorous. 
Colomblaele fees asc eee a ee ree Cee eae er eee 3. appendiculatus Wartig. 
Color resinous, inclined tomeddish)-s2s25-5--oere see eee 4. resinicolor n. sp. 
1. Gymnonychus californicus new species. 
Female.—Length 4.5 mm.; very short and robust, shining; head 
densely punctured, rather opaque; clypeus very slightly emarginate; 
frontal crest wanting or very slightly indicated; antenne very short, 
not as long as head and thorax, filiform, third joint longest; intercostal 
nearly at right angles with costa, interstitial with basal; venation other- 
wise normal; stigma short, broad, ovate at base; apex of costa strongly 
thickened; sheath broad, slightly emarginate beneath and acuminate 
at tip; claws simple. Color black; angles of pronotum, tegule, trochan- 
ters, apices of femora (particularly anterior pair), tibize, and tarsi yellow- 
ish ferruginous; the posterior tibive and tarsi particularly somewhat 
infuseated; veins, including stigma and costa, dark brown; wings 
hyaline. 
