DESCRIPTIONS OF NEW SPECIES OF WASPS WITH NOTES 

 ON DESCRIBED SPECIES. 



By S. A. Rohwer, 



Of the Bureau of Entomology, U. S. Department of Agriculture, Washington, D. C. 



The following notes and descriptions have accumulated during 

 the past three years. Some of the descriptions were drawn up years 

 ago, while the others have been made since November, 1909, when 

 the writer came to Washington. 



Superfamily VESPOIDEA. 



Family ANTHOBOSCID^E. 



Genus SIEROLOMORPHA Ashmead. 



The genus Sierolomorplia Ashmead was founded l for a curious 

 little wasp described 2 by Ashmead under the name Sierola ambigua. 

 In Ashmead's tables to the genera of Vespoidea it is placed in the 

 family Cosilidse, but according to his own tables this is wrong, as the 

 intermediate coxse are distinctly separated, 3 and following his char- 

 acters it runs out at category 5 (p. 40) in his family Tiphiidse because 

 there is only one complete, well-defined cubital cell, the second being 

 only faintly indicated, as in the genus Trypoxylon. The cubitus of 

 the hind wings is much beyond the transverse median vein. The 

 habitus of Sierolomorpha would recall certain of the Bethylids, or 

 is more like Tiphia than like Anthobosca. The ventral constriction 

 of the abdomen is like Anthobosca and not like the Bethylids. The 

 genus may for the present be placed in the family Anthoboscidre, 

 which may be recognized by the shape of the first abdominal segment, 

 the unarmed pygidium, and other characters. 



i Can. Ent., vol. 35, 1903, p. 42. 



2 Bull. 45, U. S. Nat. Mus., 1893, p. 56. 



3 The use of the distance between the intermediate coxse as a family character in this group is open to 

 question. The above-mentioned distanceVaries to some extent in the sexes, and in the genus Anthobosca 

 (which Mr. Turner has shown Cosila Guerin is a synonym, hence the change of the family name from that 

 used by Ashmead) the type of the family, the distance between the intermediate coxae is great enough 

 to permit one to say that they are well separated. 



Proceedings U. S. National Museum, Vol. 40— No. 1837. 



551 



