ENTOMOLOGY. 



741 



veur ; the third also obsolete, terminal. Abdomen long 

 and gradually pedunculated. 



Family I. Oxybellida. 

 Superior wings with one complete submarginal cell. 

 Genus DCXVIII. Nitela. Latreille. 

 Antenna filiform nearly straight, longer than the head, 

 the second and third joints nearly of equal length. Man- 

 dibles bidentate at their extremities. Tibix not spinose. 

 Tarsi with small /mlvilli. 

 Sfi. 1. Sfiinolec. 

 Miela Sfiinole. Latreille. 

 Inhabits the south of France. 



Genus DCXIX. Oxybelus. Latreille, Fabricius, 

 Panzer, Jurinc, llliger, Spinola. 



Vespa. Linnaeus, Villers, Christus. 

 Sphex. Schaeffer. 

 Ckaukp. Olivier, Rossi. 



Antennae thicker towards their extremities, longer 

 than the head, convoluted, the second joint much shorter 

 than the third. Mandibles without teeth at their ex- 

 tremities. Tibiae spinose. Tarsi with large fiulvilli. 

 Sfi. 1. Uniglumis. 

 Ves/ta uniglumis. Linn. 

 Oxybelus uniglumis. Fabricius, Latreille. 

 Inhabits Europe. 



Tribe IX. Crabronides. 

 Thorax with the first segment transverse-linear. Feet 

 short, or moderately long. Labrum entirely concealed 

 or but obscure. Eyes not reaching the hinder part of 

 the head. Ocelli very distinct. Superior wings not 

 folded longitudinally. Antennae inserted at the mouth, 

 with the first joint cylindric or conic, or towards the 

 middle of the face. 



Family I. Crabronida. 

 Superior wings with one or two complete submargi- 

 nal cells. 



Division I. 

 Mandibles with their extremities bifid. Superior 

 wings with but one recurrent nerveur. 



Genus DCXX. Crabro, Fabricius, Olivier, Rossi, 

 Jurii.e, Panzer, llliger, Spinola. 

 Sphex. Linn. Villers. 

 Vespa. Linn. Geoffroy. 

 Pemphredon. Fabricius, Spinola. 

 Antennae with the first joint long and cylindric. Su- 

 perior wing> with one complete submarginal cell. 

 Sfi. 1. Cribrarius. 



Crabro cribrarius. Fabricius, Latreille. 

 Inhabits Europe. 

 Sfi. 2. Sublerrancus. 



Crabro subterraneus. Fabricius, Latreille. 

 Inhabits Europe. 

 Sfi. 3. Tibialis. 



Pemfihredon tibialis. Fabricius. 

 Inhabits Europe. 



Obi. These three species may be considered as the 

 types of as many genera. 



Genus DCXXI. Stigmus. Jurinc, Panzer, llliger, 

 Spinola, Latreille. 



Antennae with the first joint obconic. Superior wings 

 with two complete submarginal cells ; and two discoidal 

 cells. 



Sfi. 1. Ater. 



Stigmus ater. Jurine, Latreille. 



Genus DCXXII. Cemonus. Jurine. 



Psen. Panzer. 

 Pemphedron. Fabricius. 

 Stigmus. Latreille. 



Antennae with the first joint obconic. Superior wings 

 with two complete submarginal, and three discoidal cells. 

 Sfi. 1. Minutus. 



Pemfihredon minutus. Fabricius. 

 Psen fiallifies. Panzer. 

 Cemonus minutus. Jurine. 

 Stigmus minutus. Latreille. 

 Inhabits Europe. 



Division II. 

 Mandibles strong, many-toothed. Superior wings with 

 two recurrent nerveurs. 



Genus DCXXIII. Pemphedron. Latreille, Fabri- 

 cius, Spinola. 



Cemonus. Jurine, Panzer, llliger. 



Superior wings with the submarginal cell not nar- 

 rower towards the apex. Antennae with the first joint 

 longest, thickest. 



Sfi. 1. Unicolor. 



Pemfihedron unicohr. Latreille. 



Cemonus unicolor. Jurine. 



Inhabits Europe. 



Family II. Mellinida. 



Superior wings with three complete submarginal 

 cells. 



Division I. 



Antennae inserted at the mouth, filiform. Clypeus not 

 trilobate. 



Genus DCXXIV. Mellinus. Fabricius, Panzer, 

 Jurine, llliger, Spinola. 



Sphbx. De Geer, Cuvier, Villers. 



Vespa. Linn. Rossi, Harris. 



Superior wings with all the submarginal cells sessile. 

 Abdomen distinctly pedunculated. Tarsi terminated by 

 a thick joint, bearing a large fiulvillus. 



Sfi. 1. Ruficarnia. 



Mellinus rujicornis. Fabr. Panzer, Latreille. 



Inhabits Europe. 



Genus DCXXV. .Alyson. Jurine, Panz. Latr. 



Pompilus. Fabricius. 



Superior wings with the second submarginal cell pe- 

 tiolated. Abdomen with a short peduncle. Tarsi with 

 a small pulvillus. 



Sfi. 1. Lunicornis. 



Pomfiilus lunicornis. Fabricius. 



Alyson lunicornis. Panzer, Latreille. 



Inhabits Europe. 



Division II. 



Antenna thicker towards their extremities, inserted 

 about the middle of the face; Clypeus trilobate. 



Genus DCXXVI. Ceroehis. Lair. Illig. Spinola. 



Sphex. Schaeffer, Villers, Rossi. 



Vespa. Geoffroy, Olivier, Harris. 



Philanthus. Fabricius, Jurine, Panzer. 



Bembex. Rossi. 



Crabro. Rossi. 



Antennae gradually thicker externally, very much ap- 

 proximating at their base, almost as long as the thorax, 

 the third joint somewhat cylindric. Mandibles with a 

 tooth in their internal edge. Superior wings with the 

 second submarginal cell petiolated. 



Sfi. 1. Major. 



