THE CANADIAN ENTOMOLOGIST. 259 



Characters : Antennae longer than the body and situated on large 

 broad tubercles ; spur slender, and about twice as long as the segment ; 

 first segment broader than long and gibbous on the inner side. Forehead 

 narrow and oblique to the sides of the antennal tubercles. Body elon- 

 gated, wings long and slender; nectaries hardly more than pores 

 with a chitinous ring around the edge. Cauda short and broadly pointed, 

 differing from the rest of the genera by the absence of the knob at the 

 tail-end. Anal plate short, separated in the middle and forming two 

 distinct lobes. End of cauda and lobes hairy. 



Moneliia CEstlund, 1S87.* 

 type, A. carycE F'itch. 

 Characters : Antennae longer than the body and without antennal 

 tubercles ; spur of the sixth segment stout, and equal to the length of the 

 segment. Forehead raised in the middle and projected at the inner side 

 of the base of each antenna. Body long and tapering, nectaries but 

 pores with a chitinous ring about the edge. Cauda short, globular at the 

 tip and constricted into a broad base. Anal plate long and divided in 

 the centre, forming a deep V. Wings when at rest lie in a horizontal 

 position. 



A NEW PTEROMALID PARASITIC ON TORTRIX 



FUMIFERANA. 



nv CHARLES T. BRUES, CAMBRIDGE, MASS. 



Nasonia tortricts, sp. nov. 



Length, 2 mm. Moderately brilliant metallic green, with bluish 

 reflections, which are especially noticeable on the metathorax, pleurae and 

 coxae. Legs, except the coxae and apical tarsal joint, brownish yellow, 

 with the femora infuscated. Scape, pedicel and ring-joints of antennae 

 honey-yellow, the following joints piceous. Head, seen from above, two 

 and one-half times as broad as thick, the lateral ocelli as far from the 

 eye-margin as from the median ocellus. Eyes bare, or very indistinctly 

 pubescent, removed from the oral margin by half their length ; malar 

 furrow distinct, but very delicately impressed. Antennae inserted slightly 

 below a line drawn between the lower margins of the eyes, two-fifths as 

 far from the oral margin as from the median ocellus ; 13-jointed, with two 

 ring-joints and a three-jointed club. Scape reaching nearly to the median 

 ocellus ; pedicel as long as the ring-joints and the first joint of the funicle 

 together ; funicular joints quadrate, becoming slightly transverse apically, 



"Minn. Geol. Survey Report 4, p. 44. 



Auau.st, 1910 



