June 1894.] Z AI'.RISK I K. Pa R ASII t-.S OF Vf.SPA. 85 



ing a black central longitudinal band on each side, Scutellum, abdomen and legs 

 all lighter retl, antl abdomen narrower than in the >'• 



Described from tliree o ^.' and one rf. Types in niy collection. 



A second parasite. In one cell of the second vespa nest, 

 collected at New Haltiniore, about one hundred piipie in a moist 

 mass and a few issuing imagines of another much smaller parasite 

 were found. Three of these imagines were secured and moimted 

 in balsam on microscopical slides. The remainder and the pui);v, 

 in some unaccountable manner, were unfortunately lost. The 

 three mounted specimens are all females, and, although distorted 

 by pressure, something of the charactc-r can be seen in Fig. 7. 

 r)ne of these slides was sid)mitlr(l to Dr. Riley, who has kindiv 

 informed me that it is a Chalcid of the curious genus M clitlohin 

 in- /liif/i(>p/i(>ral>i(t, discussed by Messrs. Ashmead and Howard in 

 I'roc. Knt. Soc. \Vash., \'ol. H, p. 228 — 32 and 244 — 4<S. The 

 balsam has renderetl the specimen somewhat translucent, so that 

 the antenna; are seen at special advantage. 'I'he outer four joints 

 are darker than the others, but tluy show in more remarkable 

 manner than I have ever noticed elsewhere the cin-ious sensory pits 

 and interior lengthened sensory cavities frequently to be seen in 

 hymenopterous antenna;. (Figs. 11, 12.) 



In both the nests of I'lSpa collected at New Baltimore 

 there were traces of a third hymenopterous parasite. In the first 

 nest there were thirty-seven vespa cells with the rounded pupal 

 covering still unbroken, but pierced with three or four small cir- 

 cular openings. Inside, corresponding with these small o[)enings, 

 were found soft, silky, white coccons, luuloubtedly hynumopterous, 

 all deserted by their owners, who had evidently made their exit at 

 the corresponding external openings. The second nest containeil 

 twenty-five of these piercetl vespa cells. 



At Nyack, N. Y., early in October, 1S83, while examining 

 a nest of /'. Jiiacitlata^ which had been recently deserted, a small 

 dipterous puparium dropped from one of the cells. (Fig- i.v) 

 And at Flatbush, Long Island, on October 14th, 1892, from a 

 decayed log was extracted a female /'. nniiiilata^ dead and partially 

 dried. On separating the abdominal rings of this female, from 

 the nearly empty abdominal cavity there dropped out a dipterous 

 puparium which is indistinguishable from Fig. 13. 



