150 THE CANADIAN ENTOMOLOGIST. 



[260.] GENUS CRVPTOCENTRUM. 



Head between transverse and globose ;' face quadrangular, with the 

 anterior margin crenate ; palpi long, filiform ; antennae slender, first joint 

 thick; second minute; third longer than the rest; trunk ovate-oblong, 

 subcomjDressed ; neck moderately long ; scutellum trapezoidal ; legs 

 slender, posterior pair elongated ; upper wings-apical areolets three ; 

 middle four, viz., 2, 2, without a cellule; basilar three; under wings- 

 areolets seven, viz., 4, 3 ; abdomen sessile, smooth, subcompressed, in 

 the female clubbed at the apex ; four first segments longer than the rest, 

 the first curved, rather wider at the apex ; the three next are wider than 

 long, the last is minute and triangular ; at the extremity the tail is cleft 

 for the passage of the ovipositor ; this cleft is formed by the turning up 

 of the sides of the last ventral segment ; ovipositor very short ; the four 

 last ventral segments, at least in tlie dead insect, project so as to form an 

 elevated ridge in which the ovipositor is concealed. 



360. Cryptocentrum lineolatum Kirby. — Plate vi., fig. i.^ — Length 

 of body 6 lines. A single specimen taken in Lat. 65"". 



Body very black, somewhat glossy, sprinkled with whitish decumbent 

 hairs. Head subtransverse, hollowed out behind to receive the neck ; 

 face with a streak on each side the eyes ; feelers and scape of the antennae 

 on the outside white ; antennae slender, black, externally obscurely testa- 

 ceous, with a white annulet below the middle ; trunk compressed ; margin 

 of the collar on each side, tegulae, and two transverse elevated streaks on 

 the scutellum, white ; four anterior legs with the coxae and trochanters, 

 tip of the thigh and under side of the tibiae, white ; the thighs, except the 

 tip, testaceous ; upper side of the tibiae and tarsi, and long posterior 

 legs, black ; wings hyaline with black nervures ; abdomen sessile, with 

 the last segments dilated for the reception of the ovipositor ; the apical 

 margin of all the segments but the two first is interruptedly white ; but in 

 those segments the interruption is not perfect. 



[261.] FAMILY KRACONID.E. 



361. Bracon crucator Kirby. — Length of body without ovipositor 

 3 lines. A single specimen taken in Lat. 65°. 



Body very black, glossy. Head subglobose, with the segment of a 

 circle taken out behind ; eyes between oval and round; antennae as long 



