148 [January 



except tips, yellow ; most of the tarsi fusco-ferruginous, the two ante- 

 rior pairs yellowish at base ; anterior tarsi not ciliated. Abdomen 

 shining, very minutely punctured, except the two apical segments, 

 which are rather deeply punctured ; the first, second and fourth seg- 

 ments with apical yellow bands as in the preceding species, as well as 

 the band on the second ventral segment ; venter black, shining. Length 

 3? lines; expanse of wings G\ lines. 



Collection. — Dr. J. Gundlach. One specimen. 



Very similar to the preceding species, but is readily distinguished by 

 the much smaller size and by the large yellow spots on the uietathorax. 



Genus ALYSON. Jurine. 

 Alyson aculeatus. n. sp. 



Black; face silvery; antennae, most of legs and abdomen, piceous, the two 

 basal segments of the latter rufous, the apical segment armed with two very 

 long and slender, sting-like spines; wings hyaline, iridescent, with a faint 

 cloud across the apical third. 



Male. — Black, shining, thickly clothed with a fine whitish pile ; face 

 silvery; mandibles pubescent, pale testaceous, piceous at tips ; antenna? 

 piceous, the apical joints beneath subferruginous, basal joint beneath 

 with a pale testaceous line. Thorax smooth above, very minutely and 

 densely punctured beneath ; uietathorax elongate, subquadrate, rugose, 

 the dorsal base with an elongate subtriangular space enclosed by a rather 

 sharp carina, striated at base, and carinated down the middle, posterior 

 angles small and subacute ; tegulae rufo-piceous. Wings hyaline, iri- 

 descent, with a faint fuscous cloud across the apical third, and occupy- 

 ing the whole of the marginal cell ; nervures fuscous, stigma paie ; 

 second submargiual cell petiolated. Legs piceous-black, slightly pu- 

 bescent; tips of the femora, the tibia? and tarsi rufo-piceous; posterior 

 femora terminating beneath in a stout acute tooth. Abdomen smooth 

 and polished, slightly pubescent, piceous-black, the two basal segments 

 rufous, except the disk of the first and a large spot on the apex of the 

 second segments, which are piceous ; terminal segment truncate at tip. 

 with two very long, slender, acute, sting-like, pale ferruginous, spines, 

 diverging posteriorly. Length 3 2 lines; expanse of wings 4| lines. 



Collection. — Dr. J. Gundlach. One specimen. 



Fain. CRABRONID.E. 



Genus TRYPOXYLON. Latr. 

 Trypoxylon excavatum. Smith. 



Trypoxylon excavatum. Smith, Brit. Mus. Cat. Hym. iv, p. 380. 

 Collection. — Ent. Soc. Philad. Four specimens. 



