WALSH DESCRIPTIONS OF N. AM. HYMENOPTERA. 145 



are distinct and acute nearly to the tip, and here there is no obliquely 

 transverse stria as on 2-5. 3. Abdominal joints 2-5 have no basal yellow 

 band, and 5 has its terminal £ black. 4. In the hind legs the tibia have 

 their basal | dull rufous and their terminal £ dusky; and the tarsi are en- 

 tirely dusky except the extreme base of joints 1 and 2. Length ft .13 inch. 

 Front wing q* .10 inch. 



One % ; ? unknown to me. Might be taken for a variety of 

 the preceding but for the structural differences in the ist abdom- 

 inal joint. 



Section 2. — Areolet pentagonal, but terminally subobsolete. 



PolysphillCta pimploides, n. sp.— $.— Black. Head glabrous and pol- 

 ished, with a longitudinal carina on the disk of the face. Palpi 



Antenna; \ as long as the body, with the ist joint of the tlagellum 4 times 

 as long as wide, dull rufous above, paler below, and whitish towards the 

 1st joint, which is dusky above and below. Thorax highly polished, gla- 

 brous. Tegula; whitish. Metathorax polished, with rather sparse, fine 

 punctures, and the usual two carina; pretty distinct halfway to the tip; 

 the lower half of pleura pale rufous. Abdomen subopaque, with rather 

 •coarse, confluent punctures, more polished towards the tip and the tips of 

 the joints. The same tubercles on joints 2-5 as in the normal Pimpla, 

 and behind them, as well as on the hinder part of joint 1, a shallow, im- 

 pressed, obliquely transverse, lateral stria, sloped the contrary way to 

 those of Glypta. Joint 1 longer by \ than wide, | wider behind than be- 

 fore, with the two carina; distinct \ of the way to the tip, and enclosing 

 on the basal J of the joint a triangular excavation, but on the terminal § 

 entirely obsolete. Joints 1-3 and the basal part of 4 luteo-rufous. Ovi- 

 positor $ as long as the body ; sheaths pubescent and scarcely tapered, 

 luteo-rufous inside, dusky outside. Legs pale rufous; the 4 front legs with 

 their trochanters, tibia;, and tarsi, whitish; the front tibia; with an exte- 

 rior basal dusky vitta ; middle tibia; with their 2d and 3d terminal I pale 

 dusky, and middle tarsi with the tips of the joints obfuscated. Hind legs 

 with the extreme tip of the femora narrowly white, preceded by a black 

 annulus; tibia; white with their second and third \ and their terminal f 

 black; tarsi white with the terminal J-^ of joints 1-3 dusky, 4 and 5 pale 

 rufous. Wings svbhyaline ; veins dusky; stigma twice as long as wide, 

 pale dusky, paler at the extreme base. Radial area moderate, its poste- 

 rior angle about 135 . Areolar cross-vein as long as usual, and beyond 

 it, but only in certain lights, a very slender, hyaline cross-vein so as to 

 make a completely regular pentagonal areolet. Bulla; 4 small but dis- 

 tinct, one (A) on the forward end of the areolar cross- vein, C and D pretty 

 wide apart, and E rather nearer to the angle of the ist recurrent vein than 

 to the areolar cross-vein. Length $ .16 inch. Front wing $ .14 inch. 

 Ovipos. .08 inch. 



One 2 ; % unknown to me. Has exactly the general appear- 

 ance of Pimbla inquisitor, Say ; but, besides the difference in the 

 iii— 10 D une '> lS 73-l 



