130 ENTOMOLOGICAL SOCIETY 



between the articulations of the legs (coxae, trochanters, &c.), the apex 

 of anterior femora and all tibiae and tarsi, are white, but appear black 

 from the dense pubescence that cover them; the scape is aeneous-black, 

 the flagellum dark brown with three long branches; otherwise similar to 

 female. 



Hab. Champaign and Tonti, Illinois. 



Types in Coll. Illinois State Laboratory of Natural History and Coll. 

 Ashmead. 



Described from several specimens bred August 27 and Sep 

 tember 9, 1894, by W. G. Johnson, from cocoons of Meteorus 

 vulgaris, a primary parasite of Canarsia hammondi , and pos 

 sibly also from the cocoons of Apanteles canarsice described 

 above. 



The ? of this species comes nearest to E. varians How., but 

 the abdomen is neither so long nor acutely pointed and differently 

 colored, while the thorax is smoother and the pubescence of legs 

 differently arranged; thecT, on the contrary, very closely resem 

 bles E. nigripes How., but the slight difference in the color of 

 the legs and the arrangement of the bristles readily separate the 

 species. 



Tetrastichus Haliday. 



Tetrastichus cosrulescens, sp. n. [Fig. 8.] 



9- Length 1.5 mm. Steel-blue; scape aeneous, the flagellum sub- 

 clavate, brown-black, pubescent, the joints delicately fluted ; funicle 3- 



FIG. 8. Tetrastichus caerulescens. 



jointed, the first joint the longest, slightly longer than the second, the 

 third slightly shorter than the second; club fusiform, 3-jointed, a little 

 longer than the last two joints of funicle united and stouter; tips of 

 femora, and the tibiae and tarsi, except two last joints, white, the two 



