42 PROCEEDINGS OF THE NATIONAL MUSEUM vol.80 



ferruginous, the posterior coxae apically, the posterior femora, and 

 all tibiae and tarsi, piceous to blackish ; abdomen entirely black, in- 

 cluding the sternites; wings clear hyaline, stigma dark brown, veins 

 paler. 



Type.—U.S.'NM. No. 43495. 



Type locality. — San Diego, Calif. 



Remarks. — Described from a single female specimen. 



29. MACROCENTRUS AFFINIS, new species 



Very similar to sefniniger, but differing in the mostly brownish 

 abdomen and yellowish legs, and in the longer palpi. 



Female. — Length 5.5 mm. Face smooth, weakly punctate 

 medially; eyes large, very prominent; clypeus rather large, strongly 

 convex, subtruncate apically; distance from clypeal foveae to eyes 

 less than length of clypeus ; f rons short, maxillary palpi much longer 

 than width of head, the longest segment fully as long as second 

 segment of antennal flagellum ; apical segment of labial palpus much 

 longer than the third; antennae a little longer than the body, 44- 

 segmented. Thorax rather narrow, deep; prescutum prominently 

 elevated ; notauli not f oveolate ; scutellum more than half as long as 

 propodeum ; propodeum transversely striate, more w^eakly so basally, 

 smooth at extreme base ; prosternum smooth ; sides of pronotum only 

 indistinctly punctate; mesopleura flat, not depressed below, uni- 

 formly punctate, the punctures well separated ; metapleura punctate ; 

 hind coxae polished; a.pical teeth of trochanters well developed; 

 longer calcarium of hind tibia very nearly half as long as basitarsus ; 

 radius arising from a little beyond middle of stigma; radial cell 

 ending much before wing apex ; metacarpus extending the length of 

 second intercubitus beyond apex of radial cell; first cubital cell 

 about as long as first discoidal; second abscissa of cubitus much 

 more than half as long as recurrent ; nervulus postf ureal by half its 

 length; submedian cell almost entirely glabrous, with only a few 

 scattered hairs ; mediella more than twice the length of lower abscissa 

 of basella, the latter not quite as long as nervellus ; upper abscissa of 

 basella interstitial with transverse abscissa of subcostella; radiellan 

 cell narrowing slightly at apex. Abdomen not distinctly longer than 

 head and thorax; first tergite about twice as long as broad, deeply 

 impressed at base, finely but not closely aciculate ; second tergite not 

 distinctly longer than broad at apex, smooth except toward base, 

 where it is very feebly aciculate ; remainder of dorsum of abdomen 

 polished ; ovipositor sheaths a little longer than the body. 



Head yellowish ferruginous, vertex blackish; antennae including 

 scape and pedicel blackish; palpi slightly dusky; thorax brownish 

 varied with black in the depression surrounding scutellum, and on 



