[HARRINGTON] CANADIAN PROCTOTRYPID.E 199 



from 2-5 mm. to 4*5 mm., and the antenna of the females also show 

 marked variations in the length of the joints. All the specimens, however, 

 seem referable to a single species. 



ACLISTA C.\UDATA, Sp. UOV. 



9.— Length 2-0-3 mm. Head and thorax black, abdomen subrufous, legs 

 yellow. Head subglobose, polished ; frontal prominence and occipnt with den.se 

 pubescence. Antennœ moderately stout, pubescent, honey-yellow, with terminal 

 joints dusky ; scape long, extending far beyond ocelli, as long as pedicel and four 

 joints of fiagellum ; pedicel nearly twice as long as thick, first joint of flagellum as 

 long as pedicel but more slender, joints two to six subequal, about as long as thick, 

 joints beyond moniliform, gradually enlarged, last joint large, but little smaller 

 than the two preceding. Clypeus and mandibles rufous, palpi pale yellowish. 

 Thorax black, sparsely pubescent, scutellum convex, with large circular fovea at 

 base ; tegulte rufous or rufo-piceous ; pleur?e impressed. Legs stoutly clavate, 

 honey-yellow. Wings with yellowish tinge, nervure pale brown, marginal vein 

 thickened, more than twice as long as thick, stigmal short. Abdomen rufous or 

 rufo-piceous, darker at base and apex, petiole short and stout, rugose and pubescent, 

 ovipositor exerted, yellow, 1 mm. in length. 



^ .—Abdomen darker. Antennae long, filiform ; scape a little longer than the 

 pedicel and first joint of flagellum ; pedicel one-half longer than thick ; joints of 

 flagellum subequal, about three times as long as wide ; the first excised at base, 

 the last a little longer than the others. 



De.scribed from six ? 9 and three $ $ taken near Hull, as follows: 

 One 9, 5th August, 1800; one 9, 24th July, 1897 ; two 9 and one $, 

 2nd August; one 9 and one $, *7lh August; one 9 and one ^, 14th 

 August, 1897. Two females of this species were also, some time ago, sent 

 to Mr. Ashmead, who considered them referable to A. mlssouriensis, but 

 the male differs slightly from his description, which states that the first 

 flagellar joint is as long as the scape, while in my specimens it is only 

 about two-thirds as long. Mr. Ashmead also considers the exerted 

 ovipositor as onl}^ accidental, but the eight females, obtained on different 

 dates, all have it exerted, of a length almost fully equal to that of the 

 abdomen, whereas such a protrusion seems of very rare occurrence in 

 other members of the family ; only a few instances occur in my collection. 



ACLISTA BOREALIS. 



AcJista boreal is, Ashmead, Monog. N. A. Proc, p. 378. 



Type 9 m Coll. Ashmead, from Ottawa. Also one 9 taken 20th 

 May, 1894, and one 9 obtained from moss collected on Central Experi- 

 mental Farm Ottawa, in ISTovember. One <? which seems to agree with 

 these was taken at Chelsea, 3rd October, 1897 ; the antenna- are slender, 

 the pedicel a little longer than in the preceding species, the apex of the 

 scape beneath is obliquely prolonged into a prominent triangular spine, 

 but this may be only an individual, not specific, character ; the legs are 

 piceous, with the articulations paler. One 9 received from Mr. W. 



