361 



Stomoxvs, Geoff., Fab. ^^ 

 Where the pio])Oscis is only geniculate near its base, and then ad- 

 vances directly forwards. 



C. calci(r(ms,h.; De Gccr, Insect., VI, iv. 12, 13. Seta of 

 the antennae pilose; body cinereous-grey spotted with black; 

 proboscis shorter than the body. It bites our legs severely, 

 particularly on the approach of rain f . 



BucENTEs, Lai. — Stomoxys, Fab. — Siphona, 31eig., 

 Where the proboscis is bi-geniculate as in Myopa J. 



The genus Camus of jirofessor Nitzsch — Insect. Epiz., Magas 

 der Entom., of Germar— which he refers to our family of the Co- 

 noi)sariye is distinguished from the preceding ones in the presence of 

 rudiments of wings. The species which serves as its type is figured 

 by M. Germar in his Faun., Insect. Eur., fasc. IX, tap. 24. 



The direction of its proboscis, the form of its antennae, and that of 

 its body, seem to indicate its pioximity to Stomoxys. 



Our fourth and last tribe, that of the Muscides, is distinguished 

 from the three preceding ones by a very apparent, always membra- 

 nous and bilabiate proboscis, usually bearing two palpi (the Phorae 

 alone excepted), susceptible of being entirely retracted within the oral 

 cavity; and by a sucker composed of two pieces. The antennae always 

 terminate en pallette with a lateral seta. These Athcricera embrace 

 the old genus Muyca of Fabric! us, which the labours of Messrs. Fallen 

 and Meigen, without mentioning our own, have greatly modified. 

 All the difficulties however which beset its study are far from being 

 removed; for although those gentle.nen have established a great num- 

 ber of new genera, there arc still some, Tachina and Antlioinyia, for 

 instance, which can only be considered as general repositories. In 

 the work of Meigen, which is wholly restricted to the Diptera of Eu- 

 rope, the first of these genera is composed of three hundred and fifteen 

 species, and the second of two hundred and thirteen. Dr. Robineau 

 Desvoidy, wishing to complete these researches, and to meet the de- 

 mands of the science, has devoted himself with much zeal to the spe- 

 cial of the Muscides, which he calls Miodares; and the Memoir on this 

 subject, which he presented to the Royal Academy of Sciences, 

 lias been deemed worthy of insertion among those of that institution ; 

 but as that paper is not completed, and as we are only acquainted with 



* MM. Lepeletier and Serville — Encyc. Method., X, 500 — have formed a new 

 genus PaosENA, which they have separated from the preceding one, on account of 

 its much longer proboscis — four times tlie length of the head — aud the seta of the 

 antennae, which is bearded on both sides. 



t Fab., Lat., Meig.. Fall., &c. 



: Lat.. Guiicr. Cru-t. et Insect., IV, :?r.p ; M"'-., D![-t , :::::;vi!, IS. 25. 

 vol.. I .-. . B B 



