486 [June 



Wings dusky hyaline ; nervures fuscous. Legs black ; tips of the fe- 

 mora, especially of the anterior pair, and the tibiae, except a spot on 

 the posterior pair at tip beneath, yellow ; tarsi more or less dusky, 

 blackish at tips. Abdomen subsessile. elongate-ovate, convex, shining ; 

 first segment sometimes with a yellow dot on each side; second segment 

 with an oblique, subovate yellow spot on each side; third segment with 

 a transverse, slightly undulate, median, bright yellow fascia, interrupted 

 in the middle ; the three following segments each with a subinedian, 

 continuous, bright yellow fascia ; apical segment immaculate, rounded 

 at tip ; beneath shining black, immaculate. Length 5 lines ; expanse 

 of wings 8 lines. 

 Two specimens. 



Genus PEMPHREDON, Latr. 



1. Pemphredon Morio, n. sp. 



Black, immaculate; apical half of wings fuscous, violaceous; abdomen ovate, 

 polished, petiole rugose, one-half the length of the abdomen. 



Female. — Deep black, immaculate; head large, quadrate, subopaque, 

 closely and coufluently punctured on the front, and running into longi- 

 tudinal striae, while on the occiput and cheeks the punctures are more 

 sparse; the face and cheeks have a thin whitish pubescence; mandibles 

 deeply grooved towards the tip which is obtusely bidentate ; antennae 

 slender, black, tinged with piceous towards the tips beneath. Thorax 

 opaque, very densely and finely sculptured, and under a very strong 

 lens the rugosity on the mesothorax runs into minute, indistinct, trans- 

 verse striae; the dorsal line of the mesothorax is faintly impressed, with 

 a deeper longitudinal line on each side between it and the tegulae ; scu- 

 telluin with elongate punctures ; metathorax rugulose, rather coarser 

 on the basal middle, which is flattened, with the posterior margin 

 rounded and subcarinate; the posterior face clothed with a thin whitish 

 pubescence ; tegulae piceous-black. Wings long and ample, hyaline, 

 with the apical half fusco-hyaline, rather strongly tinged with violace- 

 ous; nervures and stigma blackish. Legs entirely black, subsericeous. 

 Abdomen broadly ovate, smooth and highly polished ; petiole one-half 

 the length of the rest of the abdomen, flattened, rugulose and slightly 

 pubescent. Length 5] lines ; expanse of wings 8 f lines. 



One specimen. This may be identical with P. concolor Say, but !t 

 does not agree satisfactorily with the description of that species. This 

 is larger, the wings differently colored, and the petiole is half the length 

 of the remainder of the abdomen. 



