52 PROCEEDINGS OF THE NATIONAL MUSEU^^I. vol.0] 



Park, Maryland (R. J. Kewley and J. Feighenne) ; Trout Lake, Wis- 

 consin (J. J. Davis), Muscatine, Iowa (D. M. Wadley). One speci- 

 men is from Battle Creek, Michigan, reared from Euxoa, species by 

 Mr. Satterthwaite, under Webster No. 13498, June 22, 1914. There 

 are also two collected specimens, one from Canada, and one from 

 Washington, District of Columbia. Doctor Brues's collection, at 

 Harvard University, contains two specimens, collected by A. L. Me- 

 lander, at Geneva, New York; and the Cornell Collection has one 

 specimen taken at Ithaca. New York, by F. W. Petty. 



7. MICROPLITIS CRENULATUS (Provancher). 



Microgaster crenulatus Provancher, Addit. Faun. Canad. Hymeu., 188S, 

 p. 3S7. 



Type. — In the Museum of Public Instruction, at Quebec. 



Canada ; Massachusetts. 



This species is very similar to mamestrae, but I believe it to be 

 distinct. It can be readily separated from that species by the char- 

 acters noted in the key. 



I have seen only two specimens : one, in the National Collection, 

 without locality data, but with the note, " cocoon found on base of 

 water lily ;" and one, in Doctor Brues's collection, taken at Manomet, 

 Massachusetts, by J. A. Cushman. 



8. MICROPLITIS MAMESTRAE Weed. 



MicroplUis mamestrae Weed, Bull. 111. State Lab. Nat. Hist., No. 3, 

 1887, p. 2. 



Tyjje. — Probably in the Illinois State Laboratorj- of Natural His- 

 tory. 



Illinois; New York; Michigan; Ohio; Massachusetts; New Jersey. 



Host. — Mamestra picta Harris. 



Coooon. — Solitary; reddish-brown; angular; 5 mm. in length. 



Although I have not seen the type, the species is so distinct, and 

 so well characterized in the original description, that it cannot be 

 confused. The peculiar cocoon, characteristic of this species, is also 

 well described by Weed. 



The parapsidal furrows are fine, but distinct; scutellum long, 

 longer than broad at base; stigma with a large pale spot at base; all 

 coxae testaceous ; abdomen broad, black above ; the first tergite long, 

 usually at least twice as long as its greatest breadtli, normally very 

 slightly broader at apex than at extreme base. 



The National Collection contains material from the following 

 localities: Albany, New York ( J. A. Lintner, ivova Mamestra picta) ; 

 Illinois (S. A. Forbes) ; Agricultural College, Michigan (C. F. 

 Baker); Columbus, Ohio; West Springfield, Massachusetts (H. E. 



