208 BYMENOPTERA OF AMERICA. [PART L 



of the metathorax regular, in the form of a concave, punctured 

 scullcap; its borders wholly rounded and punctured, without 

 any spin iform angle; the superior part slightly bordered by an 

 arcade. The latero-superior parts of the metathorax quite 

 swelled and prolonging themselves a little behind the post- 

 scutellum. Abdomen wholly oval. First segment small, regu- 

 larly cupuliform; the suture feeble, placed (about) on the anterior 

 third of the segment; behind the suture an insensible fluting can 

 be distinguished. Margin of the segment thick, followed by a 

 little compression at the base of the second. Thorax densely 

 cribrose with great points. Metathorax very rugose. Abdomen 

 strongly punctured; the second segment carrying along its border 

 a zone of greal punctures and rather narrowly channelled. 



Insect black. A spot on the front, another behind eacli eye, 

 the interrupted border of the prothorax, a spot under the wing, 

 post-scutel, teguhe, their apophyse annexed, and a spot on the 

 mesothorax before the scutel, yellow. Segments 1, 2, 4, 5, 6, of 

 the abdomen bordered with yellow above ; the Hard being only 

 beneath, the second equally bordered beneath; this last carrying 

 in addition on each side a yellow spot near its base; segments 4-1 

 brown beneath, without bordering. The borders regular. Legs 

 yellow, black at the base. Wings a little smoky, having a great 

 brown stigma. 



%. Clypeus yellow, higher than wide, strongly punctured, 

 polygonal, terminated by two long separating teeth. Mandibles, 

 a long spol between the antennae, the inner border of the orbits 

 as far as the bottom of the sinus of the eyes, yellow; antennas 

 large and long, black, with the scape before yellow, the hook 

 black; the haunches before, yellow. Extremity of the abdomen 

 brown, a little ferruginous beneath. 



''"''• Tegulae red. \o spot on the disk of the mesothorax. 



Ress. a. diff. — This little species is remarkable in the singular 

 distribution of the borderings of the abdomen. 



Hab. Western Mexico. Sonora, Michoacan (3 %). 

 43. A. Paraensis Sauss. 



0. Paracusis Sauss. Vespides, III, 207, 95 (1854). ' 



Hab. Para (typus in Mus. Parisiensi). 



> In the description, p. 20S, line 5th, instead of: huitiime cubital?, read: 

 troisiime cubitale. 



