650 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. 58. 



CREMASTUS NEMORALIS Davis. 



Cremastus nemoralis Davis, Trana. Amer. Ent. Soc, vol. 24, 1897, p. 364. 



From the description, based largely on color, this species is evi- 

 dently allied to cleridivora Cushman and similis Cnshman. The gen- 

 erally dark thorax with the pale prothorax is a very distinctive color 

 pattern characterizing a small group of closely allied species. G. 

 nemoralis, however, differs from all of these in its long ovipositor. 



CREMASTUS RECTUS Provancher. 



Cremastus rectus Provancher, Nat. Can., vol. 6, 1874, p. 175, 



According to notes made by Mr. A. B. Gahan, who has examined 

 the type, this species is undoubtedly a Cremastus, and judging by the 

 description of the color it is probably allied to plesivs Cushman and 

 rosae Cushman. From the former it differs in the color of the meso- 

 pleura and metapleura and of legs and abdomen, and from rosae in 

 the color of the mesoscutum, the latter having the parapsidiil lobes 

 red. 



LEPTOPYGUS ORBUS Davis. 



Leptopygu^ orbus Davis, Trans. Amer. Ent. Soc, vol. 24, 1897, p. 365. 



There is no specimen of this species at present available for study, 

 nor is its mention in the present paper intended necessarily to defi- 

 nitely include it in the Cremastini. Mention of it is made to indicate 

 that for a number of reasons it seems very doubtful if it is properly 

 placed in Leptopygns and to call attention to a number of characters 

 that seem to ally it more closely to Cremastus. All the conclusions 

 in this connection are, of necessity, based on the original description. 

 Four of the characters there given seem to exclude the species from 

 Le-ptopyg-us: the long ovipositor, the basally narrowed discoidal cell, 

 the completely areolated propodeum, and the opaquely sculptured 

 abdomen. In Leptopygus the ovipositor is short and sharply up- 

 curved, the discoidal (third) cell is rather unusually broad at base, 

 the propodeum is not at all or only partially areolated basally, and 

 the abdomen is very highly polished. The same characters that 

 separate the species from Leptopygus ally it with Cremastus, while 

 other characters, principally of color, remind one very strongly of 

 those species of Gremasius placed by Viereck in his genus Zaleptopy- 

 gus, Cremastus ohereae (Viereck) and G. orhitaMs (Cresson) . It is the 

 opinion of the writer that this is the proper disposition of the species. 



