1916] Miscellaneous Chalcidoid Ilymenoptera 305 



The male differs in having the antennae fiHform, 12-jointed with 

 two minute ring-joints, the funicle 6-jointed, the club 2-jointed and 

 terminating in an obtuse nipple; funicle and club joints clothed with 

 long soft hairs, more or less 2-whorled (less numerous in the female). 



Parecrizotes marylandensis new species. Genotype. 



Female: Length, 1.00 mm. 



Lustrous black, the head and thorax distinctly scaly; cephalic 

 knees, proximal one or two tarsal joints, a band at base of caudal tibia 

 and apex of scape, silvery white. Wings hyaline, the venation dusky 

 pallid, the swelling of the marginal vein black. Mandibles reddish 

 yellow at apex, the teeth decreasing in size from the first, acute. Pedicel 

 a little longer than wide, slightly larger than funicle 5 which is a little 

 wider than long; funicles 1-3 like large ring-joints but much larger 

 than the real ring-joint; 4 not much smaller than 5. Club without a 

 terminal nipple. 



The male differs in having the entire scape black; funicle 1 is 

 largest, cup-shaped, 4-6 twice wider than long. Club nearly equally 

 divided. Last joint of maxillar}^ palpus elongate, equal to the other 

 three taken together. 



Described from one male, three females captured by sweep- 

 ing meadows, September 28, 1915, at Hillmead, Prince George 

 County, Maryland. A rather common species. There is a 

 pair in the U. S. N. M., labelled " Henicetrus annulipes Ashmead, 

 Virginia, October 10, 1880," and a female labelled "virginiensis 

 Ashmead, Arlington, Va., June 1884." 



Types: Catalogue No. 19945, U. S. N. M., a female on a tag 

 plus a slide bearing a pair, a male and female head and female 

 caudal tibiae. The types were collected in the Maryland locality. 



Roptrocerus rectus Provancher. 



A number of specimens of both sexes, Ithaca, New York, reared in 

 connection with Ips pint, July. There is considerable variation in 

 color; the antennas may be reddish brown nearly to the club, the 

 ovipositor all black, the legs all yellow brown except the coxae. The 

 caudal legs are usually metallic, the caudal tibiae with a broad yellow 

 band just below the knee. 



The male is much smaller and has a rather narrow yellow stripe 

 across the abdomen very near base; its antennae are filiform, 13-jointed 

 with titw ring-joints; funicle 1 is about twice longer than wide, longest 

 of the flagellum while 6 is a half longer than wide or nearh^ longer than 

 the short pedicel. Otherwise about as in the female. The marginal 

 vein in both sexes is thicker proximad, somewhat as in Muscidifurax 

 but not so noticeabl3^ A female from Michigan bore no carinas on the 

 propodeum. 



An unstable, widely distributed species probably introduced 

 from Europe. 



