85 
19. Amauronematus brunneus Norton. 
1864, Nematus brunneus Norton. Proc. Ent. Soc. Phila., m1, p. 8. 
1867. Nematus brunneus Norton. Trans. Am. Ent. Soc.,1,p.205. (Cat., ete., p. 67.) 
Female.—Length 7 mm.; exp. al. 16 mm.; robust; head and thorax 
finely punctured, opaque; clypeus sometimes almost truncate, or very 
slightly emarginate; sides of ocellar basin and frontal crest present but 
rounded, latter slightly broken; antennal fovea elongate; antenne not 
longer than head and thorax, scarcely tapering, slender, joints 3 to 5 sub- 
equal; stigma not very broad, elongate, subacuminate; sheath tapering 
on both edges, somewhat angularly, to an obtuse tip, smooth, mar- 
eined with very short scattering hairs; claws very large, deeply notched, 
rays subequal. Color in general very light yellowish; mesonotum and 
mesepimera dull reddish; antennz ferruginous, black, or light brown 
above, growing lighter toward tips; tips of hind tibiw and their tarsi 
somewhat infuscated; veins ight yellowish brown; stigma, costal, and 
subcostal veins lighter, unicolorous. 
One female. Colorado. (Coll. Am. Ent. Soc.) Ihave compared also 
a specimen collected at Ithaca, N. Y. (Coll. Cornell Univ.) 
20. Amauronematus excavatus new species. 
7 
Female—ULength 7 mm.; robust; clypeus deeply and circularly 
emarginate, lobes narrow, rounded at tip; walls of ocellar basin dis- 
tinetly defined; frontal crest deeply broken by the backward prolonga- 
tion of the large oval antennal fovea; antenne short, fourth joint 
longest; venation normal; stigma rather broad, circular on lower 
margin, widest at middle; sheath acuminate, rather pointed at tip; 
cerci short, inconspicuous. Color resinous, darker on thorax and 
vertex; ocellar basin and line connecting posterior ocelli black; veins 
light yellowish brown; stigma and costa lighter yellowish. 
One female, without locality label. (Coll. Am. Ent. Soc.) This 
species seems to be somewhat intermediate between the genus to which 
it is now assigned and Pteronus. 
21. Amauronematus californicus new species. 
Female.—Length 6 mm.; rather robust, shining; clypeus distinctly, 
circularly notched, lobes rounded; frontal crest broad, stout, unbroken ; 
ocellar basin with rounded, indistinct lateral walls; fovea indistinctly 
defined, extending laterally over bases of antennie; antenne very slen- 
der, elongate, filiform, third joint longest; venation normal; stigma 
elongate, narrow; sheath narrow, squarely truncate at tip; claws evenly 
but not very deeply cleft. Color light resinous yellow; antennie brown 
above; basal joints darker; ocelli with very narrow black border; two 
black spots just back of mesoscutellum; veins light brown; stigma and 
costa light yellowish. 
Two females. Los Angeles, Cal. D.W.Coquillett, collector. (Coll. 
U.S. Nat. Mus.) 
