326 CLASS VIII. 
Sp. Conops flavipes L., DumER. Consid. gén. 8. l. Ins. Pl. 46, fig. 4, PANZER 
Deutschl. Ins., Heft 73, Tabs. 21, 22, &e. 
Phalanx III. Proboscis distinct, bilabiate at apex. Four 
sete of haustellum, an upper (labrum) fornicate, emarginate at the 
extremity, two lateral (mazxille) linear, supplied with a_ palp 
incrassated towards the extremity. Syrphide. 
These diptera, which for the most part were placed by Linnzus 
in his genus J/usca, form the genus Syrphus Fasr., and numerous 
small genera of more modern writers. 
A. Antenne of the length of the head, or longer than the head. 
+ Antenne with apical style. 
Certa FABr. Antenne inserted on a common frontal pedicle. 
Abdomen cylindrical. 
Callicera Mertc., Larr. Antenne inserted on a common 
tubercle. Abdomen conical. 
tt Antenne with dorsal seta. 
Psarus LAtr., FABr., Meira. Antenne inserted on a common 
frontal pedicle. 
Chrysotocum Mrtc., LAtr. Antenne inserted on a conical 
frontal tubercle. Scutellum unarmed. Wings divaricate. 
Sp. Chrysotoxum arcuatum, Musca arcuata L., GUERIN Iconogr., Ins. Pl. 99, 
figs. 6, &e. 
Ceratophya WiEDEM. 
_ Microdon Mrtc., Aphritis LAtr. Antenne inserted on a small 
frontal tubercle, little distinct, with first joimt elongate, cylindrical. 
Scutellum bidentate. 
Sp. Microd. apiformis, Musca apiformis Dr GER, GuéRIN Lconogr. Ins. 
Pl. too, fig. 1; Mier. mutabilis, Musca mutabilis auctor. (in part); the 
larva of this species is, according to the investigations of SCHLOTHAUSER, the 
same animal which Von Sprx and Von HEIJDEN have described as a slug, 
under the name of Scutelligera and Parmula, OKEN’S Isis, 1840, 8. 922, 923. 
Paragus LArr., Meta. Antenne inserted on the frons, approxi- 
mate, of the length of the head. Abdomen elongato-quadrate, 
depressed. Wings parallel, incumbent. 
Sp. Paragus bicolor, Syrphus bicolor Fasr., GuERIN, Iconogr. /ns. Pl. 99, 
figs. 5, &e. 
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