OF WASHINGTON. 19 



vex above; pronotum very short, abruptly rounded off anteriorly; meso- 

 notum convex, not longer than wide and only two-thirds the length of 

 the scutellum, the parapsidal furrows delicate but distinct, strongly con 

 vergent and meeting or almost meeting at base of scutellum, but anteriorly 

 they take a strong divergent curve off to one side so that the scapulae are 

 rather short and considerably wider at base than long, conforming very 

 nearly in size and shape with the axillae; scutellum very large, a little 

 more than one-half longer than the mesonotum, the axillae triangular in 

 outline and barely meet at basal angles, their suture vis a vis with the 

 parapsidal furrows, scutellum proper fully twice as long as wide at widest 

 part; metathorax very short, the spiracles small, oval; wings ample, the 

 submarginal vein nearly three times as long as the marginal, the costal 

 cell rather broad ; stigmal vein a little more than two-thirds the length 

 of the marginal vein, oblique, with a slight curve, ending in a small 

 uncus. 



Abdomen sessile, oblong-ovate, not longer than the head and thorax, 

 concave above, convex beneath, the basal segment the longest, about 

 twice as long as any of the following which are subequal ; the apical mar 

 gin of all the segments except the first, which has a slight median incision, 

 are straight, not incised; ovipositor not prominent, at the most sub- 

 exerted. 



This genus is closely allied to Tanaostigma Howard, but is 

 readily separated by the great difference in shape of the flagellum 

 and by the venation of front wings. The cP is unknown but will 

 probably be a form with branched antennae, as has been sug 

 gested to me by Mr. Howard. 



(1) Tanaostigmodes howardii n. sp. 



Female. Length 2.5 to 3 mm. General color brownish-yellow, the 

 thorax above and the abdomen finely shagreened; eyes and abdomen 

 above, except at margins, brown-black, venter subfuscous; funicle joints 

 1-5 light brown, funicle joint 6 and the club white; tegulae, propleura 

 and tarsi beneath whitish. 



Types, No. 3468, U. S. N. M. 



Hab. San Diego, Los Angeles, Cal., and Arizona. 

 Described from many specimens reared by D. W. Coquillett 

 from a gall on Prosopis. 



(2) Tanaostigmodes tychii n. sp. 



Female. Length 2.5 mm. Black, finely coriaceous ; scape, antennae, 

 tips of coxae, trochanters, knees, anterior tibiae and tarsi and hind tarsi, 

 and sheaths of the ovipositor brownish-yellow or light brown. Parapsidal 

 furrows posteriorly meeting a little before the base of scutellum. Abdo 

 men broadly oval, much shorter than thorax; tegulae large, brownish- 



