206 ODYNERUS PARIETUM. 



Div. 3. Ancistrocerus, ll'estn. — The antenna; of the males ter- 

 minated by a hook; a transverse suture on the first 

 segment of the abdomen at its base above ; the meta- 

 thorax truncate from the margin of the post-scutellum. 



7. Odynerus parietum. 



0. niger ; clypeo maculis, puncto inter antennas, thorace antieo, 

 scutello maculis duabus abdoniineque fasciis quinque flavis. 



Vespa parietum, Linn. Faun. Suec. 416. 1673; Syst. Nat. i. 949. 

 6 $ ; $* Cab. Mus. Linn. Soc. 



Rossi, Faun. Etrus. ii. 141 ? 



Oliv. Encycl. Meth. vi. 686. 

 Vespa sexfasciata, Fabr. Ent. Syst. ii. 268. 56 <? ; Syst. Piez. 263. 55. 

 Vespa ema.rgina.ta., Fabr. Ent. Syst. ii. 267.51 <? ; Syst. Piez. 263. 50. 

 Vespa angulata, Don. Brit. Ins. xiv. 71. t. 495. f. 1 ? . 

 Vespa aucta, Panz. Faun. Germ. 81. 17 <? , var. 

 Odynerus parietum, Curtis, Brit. Ent. iii. 137 ? ; Wesm. Mon. 

 Odyn. Belg. p. 16, Supp. p. 4. 



Zett. Ins. Lapp. 455. 1. 



St. Farg. Hym. ii. 656. 38. 



Sauss. Mon. Guepes Sol. i. 130. 10, Supp. pi. 11. f. 4. 

 Odynerus affinis, Herr. Schaff. Faun. Germ. fasc. 173. 21. t. 24. 

 Odynerus auctus, Herr. Schaff. Faun. Germ. 173. 22. 

 Odynerus murarius, Blanch. Reg. An. Illustr. Ins. 1. 124. f. 3. 



Female. Lengtb 5^—6^ lines. — Black ; head and thorax very 

 closely punctured ; the clypeus emarginate in front, the lateral 

 angles produced, subdentate. The clypeus yellow, with a black 

 bell-shaped spot in the middle, sometimes with two spots at 

 the base, uniting at the sides with two smaller anterior spots, 

 or the four spots separate ; the scape in front, a spot between 

 the antennae, a minute one on the mandibles at their base, and 

 a dot behind the eyes, yellow. Thorax : a transverse fascia on 

 the prothorax, the tegulae and a spot beneath the wings, two 

 spots on the scutellum, and the tibiae, tarsi, and tips of the 

 femora, yellow ; the posterior tibiae sometimes with a fuscous 

 or black spot at their apex within, the tarsi usually more or 

 less fusco-ferruginous ; the wings fulvo-hyaline, the nervures 

 ferruginous, palest towards the base of the wings ; a fuscous 

 cloud in the marginal cell, which passes beyond to the apex of 

 the wing. Abdomen shining and punctured, the basal segment 

 most strongly so ; the apical margins of the segments bordered 

 with yellow, the basal one very broad, and emarginate in front, 

 sometimes with an angular notch. 



Male. Length 3^-5 lines. — Differs in having the clypeus, labrum, 



