AMERICAN HYMENOPTERA. 67 



Calliopsis californicns.— '^.— Black, shining, thinly clothed with 

 pale pubescence; head thickly punctured; clypeus almost entirely pale yel- 

 lowish, in two specimens the yellow is reduced to a small spot; scape with 

 long pale pubescence, flagellum dull testaceous beneath; mesothorax and 

 scutellum sparsely punctured ; metathorax roughened at base; tegulae pioeous; 

 wings dusky hyaline, with neuration as in illinoiensis, except that the marginal 

 cell is more broadly truncated at tip; legs with pale glittering pubescence, spot 

 on all the knees, line on anterior tibiae and the four anterior tarsi more or less 

 pale yellowish; abdomen oblong, shining, clothed with a short thin appressed 

 pale sericeous pile, much more dense on apical segments, the second, third and 

 fourth segments are slightly constricted at base and have in certain lights a 

 pale sericeous band; venter brownish. Length .25 inch. 



Hah. — California, (Edwards, Crotch). Twelve specimens. The 

 pale markings of the head are confined to the clypeus, and specimens 

 will doubtless occur in which that part will be immaculate. 



Calliopsis atricornis.— '^ .—Shining black, very thinly clothed with 

 pale pubescence; head broad, strongly punctured, triangular mark on each 

 side of face, clypeus, a small triangular spot immediately above, and spot 

 on labrum, white; antennae entirely black; mesothorax sparsely punctured, 

 scutellum medially depressed, base of metathorax rugulose; tegulse pale pos- 

 teriorly; wings dusky, neuration as in illinoiensis ; legs slender, with thin pale 

 pubescence, tips of tarsi yellowish ; abdomen oblong, shining, with only a little 

 pubescence at apex, second, third and fourth segments above transversely de- 

 pressed at base and apex. Length .33 inch. 



Hah, — Colorado, (Morrison). Two specimens. Allied to cali- 

 fornicus in form, but is larger, head broader and the face differently 

 ornamented. 



Calliopsis Clypeatus.— % .—Black, shining, thinly clothed with whitish 

 pubescence; clypeus entirely white; antennae entirely black; mesothorax finely 

 not closely punctured; metathorax roughened at base; pleura clothed with 

 long pale pubescence; wings hyaline, second submarginal cell about one-half 

 the length of the first, the first recurrent nervure uniting with the second trans- 

 verse cubital nervure, the second recurrent is received by the second sub- 

 marginal cell near its apex; legs clothed with pale pubescence, long on the 

 femora; anterior knees, line on their tibiae and basal joint of four anterior tarsi 

 whitish; basal joint of posterior legs pale at base, rather broader than usual; 

 abdomen ovate, subdepressed, smooth and shining, clothed at apex with pale 

 pubescence. Length .23 inch. 



Hah. — Colorado, (Ridings). One specimen. Closely resembles 

 callfornicus, but easily distinguished by the different neuration of 

 anterior wings. 



Calliopsis atriceps. — % . — Entirely black, shining, thinly clothed with 

 a long whitish pubescence; head broader than thorax, face very wide, clypeus 

 flat, deeply and widely emarginate anteriorly, leaving the lateral angles promi- 

 nent and acute, the labrum being retracted; mandibles long and slender; 

 antennae longer than usual, reaching to the end of the thorax; sides ot thorax 

 densely pubescent; tegulae dull testaceous; wings hyaline, neuration as in 



