THE CANADIAN ENTOMOLOGIST. 147 Eristalis transversus, Wied. All summer. n Brousii, Willist. June : very common last year ; only took two specimens this summer. Helophilus similis, Macq. Quite common. It latifrons, Loew. m Pterallastes thoracicus, Loew. Not very plentiful ; only two or three specimens are generally taken during a season. Mallota posticata (Fabr.) Willist. Quite common. n Bautias, Walk. Quite common. Tropidia quadrata, Say. In damp and shady situations ; common. Criorrhina analis, Macq. Common in woods during May and June. " intersistens (Walk.) Willist. Very rare; took three specimens May 23rd in a woods. Brachypalpus frontosus, Loew. Very rare ; I reared this species from a larva which I found between some loose bark on a stump of a tree. Sericomyia limbipennis, Macq. Common in woods during spring and fall. Xylota ejuncida, Say. Common, ■I angustiventris, Loew. Not very common. I' pigra, Fab. Not very common in this locality. Syritta pipiens, Linne. All summer ; this is about the commonest of all Syrphidae. Somula decora, Macq. In spring and fall in woods ; quite common. Spilomyia longicornis, Loew. In September ; not very plentiful. Temnostoma alternans, Loew. In spring in woods ; rare. II bombylans. Quite common during May. II pictulum, WiUist., sp. nov. June ; very rare. Milesia ornata, Fabr. August ; rare. SYNONYMICAL NOTES. BY GEO. H. HORN, M. D., PHILADELPHIA, PA. Lamesis Westw. Tijdschr. voor Entom. xxvi., p. 67. I would call attention to the possible identity of this genus and Xenorhipis Lee. The figure given by Westwood (pi. 3, fig. 8) certainly bears a very close
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