408 University of California Puhlications [Entomology 



from an imaginary line connecting the posterior borders of the ej^es 

 as from each other; seventh segment of antenna of male slightly 

 widened at apex, much longer than broad, the club solid, ovate, shorter 

 than segments 6 plus 7, convex above and below, slightly flattened at 

 base beneath; middle femur and tibia with even surface, rounded or 



flattened but not concave beneath and without irregularities 



Holopticus, n. subg. 



BB. Eyes of the male not reaching the posterior margin of the head, distant 

 from each other by at least twice the distance between the posterior 

 ocelli; these not touching the eyes, distant from an imaginary line 

 connecting the posterior borders of the eyes by not more than twice 

 their distance from each other; antennae of the males of different 

 forms; either the middle femur or tibia or both of the male irregularly 

 contorted, grooved or armed beneath, sometimes also that of the 

 female, but less strongly than in the male. 

 C. Antennal club of the male solid, ovate, thick, sometimes hollowed be- 

 neath, as long as or slightly longer than segments 6 plus 7, these 

 not forming part of the club, the seventh segment at least as long 

 as broad, usually longer; inner surface of squama of male not 



fimbriate Pseudomasaris Ashmead. 



CC. Sixth and seventh segments of the antenna of the male forming part 

 of the club, the remaining segments indistinguishably fused, re- 

 curved like a half-closed hand, concave beneath, this part of the 

 club scarcely longer than the sixth segment, posterior margin of 

 the club strongly serrate, by reason of the irregularly projecting 

 margin of the sixth and seventh segments, the seventh segment 

 more than 3 times as broad as long, less than one-third the length 



of the sixth; inner surface of the squama of the male fimbriate 



Cotyledon, n. subg. 



A Key to the Species op the Genus PSEUDOMASAEIS 

 Males 



1. Last dorsal segment with 6 tubercles; posterior metatarsus curved and 



with a ciliate lobe at apex within; antenna resembling an inverted 



spoon (Toryna) vespoides (Cresson). 



Last dorsal segment with 4 tubercles; posterior metatarsus without a 

 lobe (2) 



2. Sixth and seventh segments of the antenna forming part of the club, the 



seventh flattened, over 3 times as broad as long, their irregular edges 

 making the posterior margin of the club strongly serrate; front with 



a prominent tubercle between the emai-ginations of the eyes 



(Cotyledon) edwardsii (Cresson) . 



Sixth and seventh segments of the antenna not forming part of the club, 

 or if so the seventh is cylindrical and but little widened, the seventh 

 segment as long as broad, or longer, club short ovate and thick, rarely 

 hollowed beneath, the posterior margin not serrate; front flat, or with 

 a weak median prominence (3) 



