INSECTS AND THEIR ALLIES 
Syrphidae (Syrphus-flies)—(Continued). 
Didea laxa, O. S. (B). 
Pyrphius abbreviate: Zett. (B). 
americanus, Wied. (V, B, W). 
“  arcuatus, Fall. (B, W). 
“  lesueurii, Macq. (V, B, W). 
“  ribesii, Linn. (B, W). 
“  torvus, O. S. (B, W). 
Allograpta obliqua, Say (B, W). 
Mesogramma geminata, Say (B, W). 
a polita, Say (W). 
- marginata, Say (V). 
Sphaerophoria cylindrica, Say (V, B, W). 
Sphegina lobata, Loew (B, W). 
Neoascia globosa, Walk. (V). 
Rhingia nasica, Say (B, W). 
Volucella evecta, Walk. (B, W). 
Sericomyia chrysotoxoides, Macq. (B, W). 
a4 militaris, Walk. (B, W). 
Eristalis bastardi, Macq. (V, B, W). 
= dimidiatus, Wied. (B, W). 
. flavipes, Walk. (B, W). 
a meigenii, Wied. (B, W). 
" tenax, Linn. (B, W). 
. transversus, Wied. (B, W). 
Tropidia quadrata, Say (B, W). 
Helophilus conostomus, Will. (V, B, W). 
eS laetus, Loew (B, W). 
ss latifrons, Loew (B). 
ty similis, Macq. (B, W). 
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