PARASITIC HYMENOPTERA. 181 



MALES. 

 Apex of abdomen armed with a curved spine. 



Middle tibise with one spur Brachycistes Blake. 



Middle tibise with two spurs Cypliotes Blake.* 



l>HOTOPSIS Blake. 

 Plioto|>*«i$i nauiif^ sp. a. 



%. — Lcnfjth .S-4 mm. Verj' light brownish yellow; eyes round, black; the 

 stemmaticum sometimes dusky, the ocelli pale, sometimes ringed with dusky at 

 base ; scape and legs, including coxa*, white or yellowish white. Body clothed 

 with long, sparse, pale hairs, especially on abdomen and legs, less distinct on head 

 and thorax. The scape of the antenna; is hardly as long as the pedicel and first 

 two jomts of flagellum united, the first flagellar joint only two-thirds the length 

 of the second, the fourth and following joints a little shorter than the second, 

 but still longer than the first. Wings hyaline, iridescent, the stigma and veins 

 pale, the former tinged with yellow ; the marginal cell is not longer than the 

 stigma; two comi)lete submarginal cells, the third indicated, however, by the 

 presence of the third transverse cubital, the other nervures obliterated ; the second 

 submarginal cell is shorter than the first, the recurrent uei'vure joining it at its 

 basal one-third. 



Hab. — Tucson, Arizona. 



Described from several specimens. Comes nearest, apparently, to 

 P. viiaatiis Blake, hut is much smaller, paler in color, with a tlifferent 

 wing venation. In P. minutus the radius originates nearer the base 

 of the stigma than in nanus, while the recurrent ncrvure joins the 

 second submarginal cell almost at its mitldle. 



PSEUDO.flETlIOCA Ashm. n. g. 

 3fale. — Apex of abdomen armed with two spines ; anterior wings 

 with two submarginal cells, nearly e<jual in length, the .second slightly 

 the larger, the recurrent nervure joins the second cell a little before 

 its middle, marginal cell short, extending only half way to the apex 

 of wing, the radius originating before the middle of the stigma and 

 strongly curved from its origin to the margin of the wing ; meso- 

 notum without parapsidal furrows. Head subquadrate, as viewed 

 from above, the hind angles acute ; ocelli close together in a triangle ; 

 antenuie 18-jointed, filiform, inserted near the clypeus, rather widely 

 separated at base, with a slight keel between, the scape as long as 

 the pedicel and first two joints of flagellum united, the first joint 

 of flagellum shorter than the second ; maxillary pal[)i H-, labial palpi 

 4-jointed ; tibial spurs 1, 2, 2, the middle and posterior pairs rather 

 long, straight and slender. Type, Photopsis cressonii Fox. 



* To this genus belong Photopsis olhipes Bl., P. belfragei Bl., P. melaniceps Bl., P. 

 nttrimnia Bl. and two or three other species. 



TRANS. AM. ENT. .''OC. XXIII. JUNE, 189ti. 



