LIST OF DIPTERA. 833 



sucker black, clothed at the tip with tawny hairs ; palpi pitchy, be- 

 set with black bristles : feelers pitchy, shorter than the face ; first 

 and second joints ferruginous ; third joint flat above, slightly con- 

 vex beneath, rounded at the tip, about twice the length of the 

 second joint ; bristle black, downy for full half its length from the 

 base, bare from thence to the tip, much more than twice the length 

 of the third joint : chest brownish black, adorned with four gray 

 stripes, which have a slight tawny tinge ; inner pair double on the 

 fore part; sides and hind border of the scutcheon gray; breast 

 hoary: abdomen nearly elliptical, a little broader but hardly longer 

 than the chest ; each segment adorned with four large hoary spots ; 

 tip black : legs black, clothed with black hairs and bristles ; thighs 

 and shanks slightly tinged with gray ; foot-cushions pitchy : wings 

 nearly colourless, slightly tawny at the base ; wing-ribs tawny ; 

 veins black, pitchy at the base ; tip cross-vein forming a slightly ob- 

 tuse angle with the fourth longitudinal vein, hardly curved inward 

 near the base, almost straight from thence to the tip, joining the 

 border at some distance above the tip of the wing; lower cross-vein 

 with two slight curves, the lower inward, less distinct than the other, 

 which is outward ; scales pale yellow. Length of the body 5 lines ; 

 of the wings 10 lines. 

 a. Galapagos. Presented by C. Darwin, Esq. 



Sarcophaga Anaces, n. s. Nigro-cinerea, abdomine maculis canis 

 quadrivittato, antennis pedibusque nigris, alis subcinereis. 

 Body black, clothed with black hairs and bristles : head hoary, 

 excepting a black stripe fringed with bristles between the eyelets 

 and the feelers; epistoma not prominent ; sides of the face fringed 

 with bristles at the base : eyes dark red : sucker black, clothed at 

 the tip with tawny hairs ; palpi black, beset with black bristles : 

 feelers black, much shorter than the face ; third joint about twice 

 the length of the second, flat above, slightly convex beneath, 

 obliquely truncated at the lip ; bristle feathered for more than half 

 the length from the base, more than twice the length of the third . 

 joint : chest tinged with gray : abdomen elliptical, not longer nor 

 broader than the chest, adorned with hoary reflections, which are 

 disposed in four rows of large irregular spats: legs black, clothed 

 with black hairs and bristles ; foot-cushions pitchy : wings slightly 

 gray ; wing-ribs tawny ; veins black ; tip cross-vein forming a right 

 angle with the fourth longitudinal vein, curved inward near the 

 base, straight from thence to the tip, joining the border at some dis- 

 tance above the tip of the wing ; lower cross-vein straight for a short 

 distance from the base, then slightly curved inward, and lastly very 



PART IV. 4 D 



