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405. 

 SCATOPHAGA SCYBALARIA. 



Order Diptera. Fam. Muscidae. 



Type of the Genus, Musca stercoraria Linn. 

 ScATOPHAGA Meig., Lut., Fcth., Curt. — Pyropa III. — Musca Linn., Fab. 

 Antennce inserted at the upper part of the face, approximating, 

 drooping and pubescent, 5 -jointed, basal joint pear-shaped, 

 naked, 2nd a little broader, truncated and producing several 

 very strong bristles, 3rd twice as long pubescent compressed 

 and oblong, the angles rounded, 4th and 5th forming a seta 

 attached near the base of the 3rd joint above, the former short 

 and pubescent, the latter very long and pubescent, producing a 

 few long hairs at the middle, beyond which it is naked (3) 3 in 

 the 2nd division it is entirely naked. 



Proboscis exserted vertically. Labrum horny curved and atte- 

 nuated, longer than the palpi, but shorter than the lip into which 

 it is received (1 b). Tongue shorter, slender and nearly linear, 

 membranous at the apex (c). Mandibles and Maxillce none. 

 Palpi attached considerably behind the base of the labrum, long- 

 slender, subclavate and clothed with very long hairs (f). Lip 

 long horny and cylindric, the lobes fleshy and hairy, not very 

 large (g). 

 Head alike in both sexes, subglobose-trigonate , bristly on the crown ; 

 face vertical, slightly concave in the middle and bristly at the lower 

 part (2). Eyes lateral remote subovate. Ocelli vei-y minute, placed 

 on the crown of the head {2* front view of the head). Thorax ob- 

 long. Scutellum subtrigonate rounded and bristly. Abdomen de- 

 pressed, 6-jointed, linear in the male, elliptic-ovate in the female. 

 Wings much longer than the body, ample incumbent and parallel in 

 repose, pubescent and beautifully ciliated, with 2 subcostal and 

 5 longitudinal nervures, the 2nd and ord united by a transverse one 

 near the middle, the 3rd and 4th towards the apex and also at the 

 base, as well as the 4th and 5th. Halteres small and capitate. Legs 

 robust, producing series of spiny bristles. Tibiae surrounded with 

 bristles at the apex. Tarsi 5-jointed, basal joint the longest, the 

 others short. Claws large curved and acute. Pulvilli long and 

 bilobed. 



ScYBALARiA Linn. Faun. Suec. 458. 1860. Curt. Guide, Gen. 1293. I. 

 Orange ochre, clothed with soft hair of the same colour, but the 

 bristles are black, underside of head and palpi yellow 3 lip brown: 

 eyes and back part of head ash brown which forms a peak over 

 the ocelli and extends along the eyes. Thorax and scutellum 

 brown and ochre, the latter with several obscure darker longi- 

 tudinal lines. Abdomen with the 1st joint cinereous, darker at 

 the base, 2nd joint of the same colour at the base and extending 

 down the back in a pointed line 3 the edges of the other segments 

 cinereous : wings very ample, slightly iridescent, stained brown, 

 the costal portion and the nervures orange-ochre, excepting the 

 2 transverse nervures which are piccous : halteres ochreous : 

 tips of the posterior thighs blackish. 



In the Cabinets of Mr. Haliday and the Author. 



