286 INSECTA SAUNDERSIANA. 
Tacutna soci, Mas. 
Nigra; caput antice argenteum; thorax cinereus, nigro quadrivittalus ; 
seutello piceo ; antenne picee, basi ferruginee; ale fusce, bast 
Serruginee. 
Black : head thickly clothed beneath with white hairs: frontal region 
pitehy: frontalia ferruginous; face silvered ; facialia with bristles along 
the whole length except near the front: antenne pitchy ; first and second 
joints partly ferruginous ; third a little more than twice the length of the 
second: chest gray, with four slender blach stripes: scutcheon pitchy : winys 
brown, lurid towards the base which is ferruginous ; prebrachial vein form- 
ing an obtuse angle at its flexure, slightly curved from thence to its tip ; 
lower cross-vein much waved. 
Fem.? Vertex ferruginous: frontalia pitchy, indistinct: face gilded : 
mediana reddish: lateralia thinly clothed with short black hairs: first and 
second joints of the feelers ferruginous ; third full four times the length of 
the second: abdomen with a gray band on the fore border of the penulti- 
mate segment. 
Length of the body 6$—7 lines; of the wings 15—16 lines. 
Brazil. 
TAcHINA FULIGINOSA, Mas. 
Cinerea ; thorax nigro quadrivittatus ; scutellum piceum ; abdomen nigrum, 
apice cinereum; antenne picee; ale nigro-fusce, basi ferruginee. 
Black: head tinged with gray; frontalia ferruginous; face tawny, sil- 
vered ; facialia with a row of bristles which do not extend along half the 
length from the epistoma: feelers pitchy; third joint less than twice the 
length of the second: chest gray, with four slender black stripes ; scutcheon 
pitchy: abdomen with a gray tip: wings blackish brown, especially towards 
the base which is ferruginous ; lower cross-vein very slightly waved: alule 
dark brown, Length of the body 5} lines; of the wings 13 lines. 
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