DESCRIPTIONS OF NEW SPECIES OF WASPS IN THE COL- 

 LECTIONS OF THE UNITED STATES NATIONAL MUSEXBI. 



By S. A. RoHWER, 



Bureau of Entomology, United States Department of Agriculture, Washington, D. C. 



Many of the following new species were received by the Bureau of 

 Entomology, for determination, from Dr. W. E. Britton, of New 

 Haven, Connecticut, and from Prof. GuiUermo Gandara, of Mexico. 

 The last lot contained a specimen of each species, with a number 

 attached. 



Some of the descriptions of the MutiUidse may be considered too 

 short, but as the genera are well defined and the species always 

 placed in the species-group to wliich they belong, it is believed that 

 they are of sufficient length to enable any one who is familiar with 

 the group in question to satisfactorily determine the insect. 



Superfamily VESPOIDEA. 



Family BETHYLID.^. 



Genus PARASIEROLA Cameron. 



PARASIEROLA CELLULARIS (Say). 



In view of the fact that Ashmead was the first reviser of this 

 species his determination should stand as the type. The following 

 notes taken from specimens reared from wheat stubble in Oxford, 

 Indiana, and now in the National Museum, may be useful: 



Female. — Length 3.75 mm. Mandibles tridentate; median carina 

 smaller above the antennal hump and only about three-fourths as 

 long as below the hump; antennal joints cylindrical, scape about 

 one-third longer than the third joint, much shorter than the third 

 and fourth, the third joint a trifle longer than the fourth; head 

 granular, with distinct punctures sparsely interspread; pronotum 

 widening posteriorly, the cephal-caudal length subequal with the 

 posterior width; length of the meso- and metanotum subequal; 

 propodeum shorter than the pronotum, dorsal aspect convex basally; 

 dorsal and posterior aspects separated by a fine carina; thorax 



Proceedings U. S. National Museum, Vol. 41— No. 1869. 



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