308 HYMENOPTEBA. 



brown beneath and at the apex of the second and third segments, the latter only broadly 

 so at the sides ; differing otherwise from that species in the shorter, more clavate abdomen 

 and distinct metathoracic area?. Antenna? stout, nearly as long as the abdomen, densely 

 covered with short pile ; the joints not clearly separated ; scape large, shining. Face 

 densely covered with longish silvery-white hair, the front and vertex finely punctured, 

 opaque ; mandibles and palpi yellow. Thorax opaque, the mesonotum minutely, the 

 pleura? more strongly, punctured ; metathorax as strongly punctured as the pleura?; the 

 centre of the metanotum transversely striated; the two median area? clearly defined; 

 the lateral area indistinct. Abdomen opaque, finely punctured ; the basal part of the 

 petiole shining, impunctate; the apical portion suddenly dilated, opaque. Areolet 

 subpetiola'te, triangular, the recurrent nervure received in the middle. 



4. Limneria montezuma. 



Nigra; pedibus anterioribus sordide rufis, mandibulis palpisque flavis; alia hyalinis, nervis nigris, tegulis 



flavis. 2 • 

 Long, fere 8 millim. ; terebra 1 millim. 



Hab. Mexico (Bilimek). 



Head densely covered with silvery -white pubescence ; the top more sparingly pubes- 

 scent and closely and somewhat coarsely punctured. Thorax opaque, closely punctured, 

 covered with silvery-white pubescence, which is longest on the metathorax. Scutellum 

 more shining than the mesonotum, finely punctured ; margined round the apex. Meta- 

 thorax with four area? — one basal, occupying the entire base ; two lateral, large ; and a 

 median, rounded at the base and becoming dilated before the middle. Metathoracic 

 spiracles small, oval, placed near the base. Abdomen opaque, the sides and apex 

 pilose ; the basal half of the petiole shining, impunctate, the apical part finely punc- 

 tured, opaque ; second segment obscure yellow beneath ; the other segments obscure 

 yellow at their junction. Areolet 4-angled, scarcely pedunculated, oblique, longish. 

 Legs densely covered with white pubescence ; the four anterior ones obscure testaceous 

 red, the middle pair inclining to fuscous behind ; the coxa? black. 



5. Limneria (?) insolens. 



Limneria (?) insolens, Cresson, Proc, Acad. Phil. 1873, p. 386 ( 6 $ ) *• 

 Eab. Mexico, Orizaba, Cordova (Sumichrast x ). 



NONNUS. 

 Nonnus, Cresson, Proc. Acad. Phil. xxv. p. 386 (1873) . 



Two species were placed in this genus by Cresson ; both inhabit Central America. 



