Order IX. -^UYMEN 0PTER\— (continued). 



Mellinus, 249 

 Alyson, 249 

 Psen, 249 

 Pilanthus, 249 

 Cerceris, 250 

 Fam. 3. — Diploptkra, 250 



Tribe I. — Mas arides, 250 

 Masaris, 250 



Masaiis proper, 251 

 Celonites, 25 1 



Tribe 2.— Vesparice. 251 

 Vespa, 251 



Ceramius, 251 

 Synagris, 252 

 Euiiienes, 252 

 Pterochile, 252 

 Odynerus, 252 

 Zethus, 253 

 Discselis, 253 

 Vespa proper, 253 

 Polistes, 254 

 Epipones, 254 



Fa?n. 4. — Anthiophila, 256 

 Apis, 256 



Andrenetse, 256 

 Hylseus, 257 

 CoUetes, 257 

 Andrena, 257 

 Dasypoda, 257 

 Scrapter, 257 

 Sphecodes, 258 

 Rhathymus,258 

 Halictus, 25 8 

 Nomia, 258 

 Apiariae, 258 

 Systropha, 259 

 Rophites, 259 

 Panurgus, 259 

 Xylocopa, 259 

 Ceratina, 260 

 Chelostoma, 260 

 Heriades, 26! 

 Megachile, 261 

 Lithur<,ms, 262 

 Osrnia, 262 

 Anthidium, 262 

 Anthocopa, 262 



