142 PROC. ENT. SOC. WASH., VOL. 20, NO. 7, OCT., 1918 



the latter about equal to the sixth; ovipositor barely showing at tip. Pale 

 reddish testaceous, the antennal funicle slightly brownish, legs somewhat 

 paler than the thorax; ovipositor sheaths and tarsal claws black. 



Male. Length 1.9 mm. Agrees with the female except that the funicle 

 joints are all subquadrate, the abdomen is petiolate, the petiole broader 

 than long and rugose above, the fourth tergite (excluding the petiole) 

 is nearly three times as long as the short second, the third the largest; 

 those beyond the fourth very short and mostly concealed from above; 

 hind tibiae at apex narrowly banded with black. 



Type locality. Brownsville, Texas. 



TypeC&t. No. 21830 U. S. N. M. 



Host. Asphondylia sp. 



Type, allotype, and six paratypes reared by E. G. Smyth from 

 galls formed in the leaf -axils of what Mr. Smyth calls the " Mimosa 

 tree" (possibly Leucaena pulverulenta or Mimosa lindheimeri) 

 and recorded in the Bureau of Entomology under Webster No. 

 64(37, Experiments Nos. 3 and 4. 



Rileya mellea Ashmead. 



* 



Rileya mellea Ashmead, Trans, Amer. Ent. Soc. XXI, 1894, p. 321. 

 Ashmeadia mellea (Ashmead) Dalla Torre, Cat. Hymen. V., 1S98, p. 331. 



Female. Head, viewed from above about two and one-half times as 

 broad as long; postocellar line slightly longer than the ocellocular line; 

 vertex somewhat flattened; antennae inserted well above the lower ex- 

 tremity of eyes; face below eyes rather weakly striated; cheeks and face 

 not separated by a distinct carina; malar space scarcely longer than the 

 width of mandible; pronotum and mesoscutum with fine shallow rugulose 

 sculpture, somewhat weaker than in most of the other species; propodeum 

 more or less divided into areas by delicate carinae or striae, the transverse 

 carina very delicate and irregular, often nearly effaced medially, longi- 

 tudinal striae delicate and widely separated few in number, the median 

 one usually the strongest, first tergite about as broad as long, exposed 

 part of second approximately one-fourth as long as the first; third nearly 

 three times a long as the second, its apex a little in front of the middle 

 of the abdomen; fourth approximately equal to the first three combined; 

 following tergite-3 very short. 



Male. The male is like the female except that the abdominal petiole 

 is as long as broad, the first tergite beyond the petiole is broader than 

 long, the apex of the third tergite is a little beyond the middle of abdomen 

 and the fourth is not as long as the first three combined. 



Type, allotype, and eight paratypes in the U. S. N. M.. Cat. 

 No." 2173. Labelled "Gall on Skunk Bush." Indian River, 

 Florida. The identity of host plant and gall maker are bolh 

 unknown. 



