38 HYMENOPTERA. 



these specimens— 1 9 ; 4 9's; 19; ld^,29's; 5 9 's. These 

 specimens were received for determination from Professor 

 F. M. Webster, in charge of cereal and forage crop insect 

 investigations, Bureau of Entomology, U. S. Department of 

 Agriculture, Washington, D. C, through the kindness of Dr. 

 L. O. Howard the Bureau's chief. I have since captured a 

 single female on a stable window at Mattoon, Illinois, July 

 16, 1910 and more recently have studied two females mounted 

 side by side on a square tag, in the U. S. National Museum 

 collection, labelled " Trichogra?nma nigriim Ashm." and " D. 

 C. July 12. '79. Bred from mid-rib of corn leaf." These 

 were successfully remounted in balsam and they proved to 

 be identical with the others. Undoubtedly they are the speci- 

 mens from which the species was originally described hence 

 types, though not so designated originally. They were reared 

 from some eggs deposited within a corn leaf along each side 

 of the midrib. 



Habitat. — United States : District of Columbia ; Illinois 

 (Centralia, Mattoon); North Carolina (Salisbury). 



Type. — Type No. 13,396, United States National Museum, 

 Washington, D. C, 1 9 in xylol-balsam (Centralia, Illinois, 

 September 5, 1909, Girault). Cotypes. — Accession No. 44,168 

 (2 balsam slides — 5 9 's and 1 d^, 2 9 's respectively. Salis- 

 bury, North Carolina. R. A. Viekery. Webster No. 5737), 

 Illinois State Laboratory of Natural History, Urbana, Illinois. 



8. NEOTRICHOGRAMMA genus novum. (Figs. 11, 

 12 and 13.) 



In general aspect similar to Pentaj-thron Riley and also in 

 all general characters but differing in having a moderately 

 long, acutely trianglar abdomen ending in a sharp point and 

 with the valves of the ovipositor prominent, long, distinctly 

 projecting beyond the tip of the abdomen, accentuating its 

 acuteness ; in the longer discal and marginal ciliation of the 

 fore wings both being about twice the length of those usual 

 in the other genus ; in the more enlarged posterior femora, 

 the longer and more slender tibiae and the longer, more 

 slender antennal club. The posterior wings are also notice- 

 ably slender and sharp and the fore wings are long, distinctly 



