igio.] E. Brunetti : Bloodsucking MuscidcB. 87 



transverse suture and a cross-band on the scutellum, whitish 

 shimmered in certain Ughts. 



Abdomen dark grey, with a blacker (ending at the tip of the 

 3rd segment) dorsal stripe, which is only wholl}' visible when 

 viewed from certain directions. vSometimes it appears in the form 

 of darker spots. 



Legs brownish yellow, on the outer side more or less darkened ; 

 sometimes the hind pair, with the exception of the outer basal 

 part of the femora and tibise, quite dark ; in the fore legs, with the 

 femora, nearly to the tips ; the middle third of the tibiae and the 

 tarsi tips, sometimes darker. 



Veins as in irritans, L., the small cross-vein straight, placed 

 beyond the tip of the ist longitudinal vein. Halteres and tegulge 

 whitish. 



Length of body 4 mm. ; wing length 4 mm. 



According to Herr Schat, this species, together with Stomoxys 

 calcitrans, L., ma^' be capable of transmitting disease. 



{Rcdcscriptioii.) 



Head. Frons in cf ^ i. to ^ width of head ; in 9 between I 

 and ^. Ground colour almost wholly ash-grey, except the black 

 frontal stripe, which is very narrow^ yet quite distinct, in the cf , 

 and forms in the 2 one-fourth of the width between the eyes at 

 the level of the ocellar triangle, gradualh" widening to one-third at 

 the level of the base of the antennae. 



The frons has in the cf a row, normaU}- of nine, distinct, well- 

 developed brownish yellow or yellow^ bristles, arranged practically 

 in a single row, mostly curved inwards towards those of the op- 

 posite row-, especially the lower ones. 



In the 5 they are more irregularly placed, forming normally 

 an upper frontal row of 3 or 4, situated rather nearer the eyes, and 

 pointing outwards or forwards ; and a lower row (the lowxr fronto- 

 orbital bristles of Osten Sacken) of 4, 5 or 6, situated nearer to the 

 frontal stripe, also placed rather closer together, and always curved 

 inwards. These two rows, the upper and the lower one, are not 

 always placed in the same relation to each other. Those in the 

 upper row are more liable to be placed out of line, the lowermost 

 bristle being often on a level with, or even below, the uppermost 

 bristle of the lower row. All the bristles are always brownish yellow 

 or 3'ellow. 



Antennse yellow, 3rd joint \-ery slightly white dusted ; arista 

 often distinctly yellow at extreme base. Palpi yellow, with a few 

 hairs. Proboscis dark brownish or brownish yellow. Bristles of 

 cheeks yellowish, or whitish yellow; lower part of head with some 

 pale hairs ; back of head with numerous very short bristly hairs. 



T/iorax. Dorsum normally moderately dark grey ; often with 

 either a bluish, brownish or sub-aenous tinge; sometimes almost 

 ash grey, especialh- in the median jjortion. There is generally ;• 

 fairly distinct pair of narrow well-separated fuscous stripes, a 



