XXV1ll INDEX, 
Orper IX.—HYMENOPTERA—( continued ). 
Mellinus, 249 
Alyson, 249 
Psen, 249 
Pilanthus, 249 
Cerceris, 250 
Fam. 3.—Drrtoprera, 250 
Tribe 1.—Masarides, 250 
Masaris, 250 
Masaris proper, 251 
Celonites, 251 
Tribe 2.—Vesparia, 251 
Vespa, 251 
Ceramius, 251 
Synagris, 252 
Eumenes, 252 
Pterochile, 252 
Odynerus, 252 
Zethus, 253 
Discelis, 253 
Vespa proper, 253 
Polistes, 254 
Epipones, 254 
Fam, 4.--ANTHIOPHILA, 256 
Apis, 256 
Andrenete, 256 
Hyleus, 257 
Colletes, 257 
Andrena, 257 
Dasypoda, 257 
Scrapter, 257 
Sphecodes, 258 
Rhathymus, 258 
Halictus, 258 
Nomia, 258 
Apiariz, 258 
Systropha, 259 
Rophites, 259 
Panurgus, 259 
Xylocopa, 259 
Ceratina, 260 
Chelostoma, 260 
Heriades, 261 
Megachile, 261 
Lithurgus, 262 
Osmia, 262 
Anthidium, 262 
Anthocopa, 262 
