122 
raised; fovea shallow; clypens truncate; antenna 1 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, labruin, extreme angles of pronotum, teguhe, 
and legs for the most part yellow; coxa- black basally: posterior 
tibia- at tips and their tarsi infuscated; wings hyaline; veins light brown; 
genitalia yellow. 
One male. Colorado. (Ooll. Am. Knt. Soc.) 
XVII. Genus GYMNONYCHUS nov. gen. 
| From yi'/uu'ot, naked, ami oi'i'f claw. I 
Body short, ovate; antenna short, filiform, third joinl longest; venation of I'ris- 
tiphora, sec.. ml cubital with both recurrent nervures; Lanceolate cell petiolate; 
stigma ovate; iii> of clypeus more or less emarginate; pentagonal area of vertex 
indistinctly outlined or wanting; flaws simple, without inner tooth; sheath of 
femalo simple, obtusely pointed at tip. 
This genus is separated from the preceding, Pristiphora^hy (lie posses- 
sion of a simple claw, without inner branch or tooth. The type of the 
genus is the species designated as californicus. Examination of the 
species of Pristipkora indicates also that appendiculatus Hartig (=gro8- 
sularia 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 <>I 8PK< TES. 
Wry short, robust: angles of pronotum broadly yellow. 
( lypeus and labrnm black 1. californicus n sp. 
Clypens ami labrnm pale 2. proximatua Norton. 
Somewhat less robust : pronotum unicolorons. 
( lolor black 3. appendiculatus Hartig. 
Color resinous, incline*! to reddish 4. resinicolor u. sp. 
1. Gymnonychus californicus new species. 
Female. — Length 4.5 mm.: very short and robust, shining; head 
densely punctured, rather «opaque; clypens very slightly emarginate; 
frontal crest wanting or very slightly indicated; antenna* 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, tegulae, trochan- 
ters, apices of femora (particularly anterior pair), tibia', and tarsiyellow- 
ish ferruginous; the posterior tibia' and tarsi particularly somewhat 
infuscated; veins, including stigma and costa, dark brown; wings 
hyaline. 
