56 PROCEEDINGS OF THE NATIONAL MUSEUM. vol. GL 



Missouri; Connecticut; Massachusetts; Maine; New York; Ctjlo- 

 rado; Michigan; Canada. 



Hosts. — Geratornia amyntor Geyer; Paonias excaecatus Smith and 

 Abbot; Sphinx drufiferamm, Smith and Abbot; Syhinx gordius 

 StoU. Apparently a general parasite on the larvae of Sphingidae, 

 issuing when the hosts are nearly full grown. 



Cocoons. — About 3.5-4 mm. in length ; brown ; with several longi- 

 tudinal ribs ; gregarious, more or less cemented together. 



After studying the type of waldeni., I find it to agree perfectly 

 with ceratomiae. As noted under hyphantHae^ ceratoniiae is closely 

 allied to that species, and is sometimes separated with difficulty. 



The National Collection contains, in addition to the types of cera- 

 tomiae., numerous specimens from the following localities: Spring- 

 field, Massachusetts; Agricultural College, Michigan; Ottawa, 

 Canada (reared from CeratoTnia amyntor by Fletcher) ; Lincoln- 

 ville, Maine (reared from Sphinx gordius.^ by H. G. Dyar) ; New 

 Hampshire; Michigan and Colorado (C. F. Baker). In Dr. Brues's 

 collection I have seen a series of specimens of this species reared 

 from a sphingid larva taken at Forest Hills, Massachusetts; also 

 three specimens taken at Machias, Maine, by Mr. C. W. Johnson. 

 The collection at Cornell University contains specimens from Wil- 

 mington, New York ; and Truro, Nova Scotia (R. Matheson) ; and that 

 of the Boston Society of Natural History, one specimen from Bar 

 Harbor, Maine. 



14. MICROPLITIS CROCEIPES (Crcsson). 



Microgaster croceipes Ckesson, Trans. Arner. Ent. Soc, vol. 4, 1872, p. 183. 

 MicropUtis nigripennis Ashmead, Bull. 50, U. S. Dep. Agr., Bur. Ent., 1905, 

 p. 122, fig. 23. 



Type. — In the United States National Museum. Location of types 

 of nigrijyenms unknown. 



Texas; Alabama; Mississippi; Arkansas; New Mexico; Colorado; 

 Kansas; Tennessee; Virginia; Illinois; New Jersey. 



Hosts. — Heliothis ohsoleta Fabricius; Chloridea virescens Fabri- 

 cius. 



Cocoons. — 6 mm. in length; cylindrical; pale brownish; longi- 

 tudinally ribbed ; solitary. 



A large, very shining species; head and mesonotum with exceed- 

 ingly minute, setiform punctures; wings stronglj^ infumated; pos- 

 terior femora .short and stout; abdomen wholly smooth and shining. 



In addition to the types of croceipes there arc many sf)ecimens 

 in the National Collection from various localities: from Virginia; 

 Southern Illinois (Robertson) ; Mesilla, Lone Mountain, and Las 

 Cruces, New Mexico (Cockerell) ; Colorado (C. F. Baker) ; Wel- 

 lington, Kansas (reared from Heliothis., species, by W. E. Pemiing- 

 ton and H. T. Osborn, under Webster No. 5458) ; Knoxville, Ten- 



