KO.2210. A REVISION OF THE CREMASTINI—CVSHMAN. 509 



petiole and the compression of the abdomen is not especially con- 

 spicuous, it seems hardly advisable to synonymize the two genera 

 without a comparison of the genotypes. This is not possible at 

 this time. 



The great length of the palpi renders this genus easily separable 

 from Cremastus, although this character is really the only positive 

 one that has been discovered. 



The propodeura extends but a short distance over the coxae, and 

 is completely areolated. The ventral edges of the first tergite are 

 widely separated and not at all inclosing the sternite. The second 

 tergite is about twice as long as wide with sides weakly divergent, 

 and the abdomen as a whole moderately long and rather weakly 

 compressed. The hind legs arc rather long and stout. The difference 

 in length between the transverse cubitus and the second abscissa 

 of the cubitus is rather less, and the basal vein rather more strongly 

 incurved than is usually the case in Cremastus. 



Genus NEOCREMASTUS, new genus. 



Genotype. — (Porizon) Neocremastus stigmaterus Crcsson. 



Allied to Cremastus Gravenhorst from which it differs principally 

 in head characters. Head in front view nearly circular, small, 

 scarcely as wide as thorax; eyes large, parallel within; face much 

 narrower than eye is long; malar space very short; lateral ocelli 

 distant from the eyes by much less than their own diameter; propo- 

 deum not extending to middle of hind coxae, carinae rather weak; 

 stigma very broad, the radius originating in the middle, its first 

 abscissa strongl}'- curved, radial cell very short; nervulus an tef ureal; 

 first tergite with its ventral margins parallel, not inclosing tho 

 sternite; abdomen strongly compressed beyond second tergite. 



NEOCREMASTUS STIGMATERUS (Cresson). 



Porizon stigmaterus Ckesson, Trans. Amer. Ent. Soc, vol. 4, 1872, p. 174. 

 This species is represented in the United States National Museum 

 by a paratype female minus the abdomen and another female from 

 tho Belfrage collection minus the ovipositor. 



Genus CREMASTUS Gravenhorst. 



Cremas<t« Gravenhorst, Ichn. Eur., vol. 3, 1829, p. lZQ.= Tcmelucha Foersteu, 

 Verb. Nat. Ver. Preuss. Rheinl., vol. 25, 1SG8, p. liS= Zalcptopygus Viereck, 

 Proc. U. S. Nat. Mus., vol. 41, 1911, p. 294. 



As hero defined, Cremastus is, in the general appearance of its 

 species, rather heterogeneous. It embraces, in addition to the more 

 typical forms, Viereck's genus Zaleptopygus, as well as species, which 

 with a little more liberal interpretation of characters might be referred 

 to Szcpligeti's genera Paracremastus and Pseudocremastus. These 

 are, however, not separable except on comparative or widely variable 



