LIST OF DIPTERA. 683 



Fam. XXII. (Estracides. 

 Cuterebra, Clark. 



Cuterebea americana. Musca americana, Fabr. Syst. Ent. 774, 

 6. Ent. Syst. iv. 315, 14. Syst. Antl. 288, 21. Cuterebra 

 Cauterium, Clark, Essay, Bots. 70, pi. 2, /. 3. Trypoderma 

 americana, Wied. Auss. Zweif. ii. 258, 3. 



a. North America. Presented by the Entomological Club. 



d. Nova Scotia. From Lieut. Redman's collection. 



Cuterebra horripilum, B. Clark, Essay, Bots. 70, pi. 2, /. 27. 



Trypoderma horripilum, Wied. Auss. Zweif. ii. 257, 2. 

 a. Nova Scotia. From Lieut. Redman's collection. 



Cuterebra terrisona, n. s. Nigra, subtus pilis nigris vestita, capite 

 maculis albo-ptibescentibus ornato, thorace utrinque fascia ob- 

 liqua flavo-pubescente, antennis nigris, seta alba basi nigra, alis 

 nigris. 



Body black, shining, clothed beneath with short black hairs : 

 head slightly furrowed on the crown, adorned on each side with 

 long triangular spots of whitish down, radiating from the inner 

 side of the eyes : eyes pitchy : feelers black ; bristle white, and fea- 

 thered with white hairs, black towards the base : an oblique band of 

 pale yellow hairs on each side of the chest, whose hind part is dark 

 ferruginous : underside of the abdomen partly covered with yellow- 

 ish white bloom : legs black, thickly clothed with short black hairs : 

 wings, wing-ribs, veins, and poisers black. Length of the body 11 

 lines ; of the wings 20 lines. 

 a. Guatimala. From M. Salle's collection. 



QEstrus, Linneus. 



(Estrus ovis, Linn. Syst. Nat. ii. 970. Faun. Suec. 1734. Gmel. 

 Ed. Syst. Nat. v. 2811, 5. Fabr. Sp. Ins. ii. 399, 6. Ent. 

 Syst. iv. 232, 8. Syst. Antl. 230, 10. Reaum. Ins. iv. Mem. 

 12, pi 35, f. 10—25. Geoff. Ins. ii. 456, 2, pi. 17, f. 1. 

 Herbst, Gem. Nat. viii. 97, pi. 64, /. 3. Fisch. Dit. Cont. iii. 

 pi. 2, /. 1 — 5. Schrank, Faun. Boie. iii. 2289. Ins. Austr. 

 843. Berk.Syn.i. 160. Clark, Linn. Trans, iii. 313, pi. 23, 

 /. 14—17. Essay, pi. 2, /. 16, 20. Stew, El. ii. 249. Turt. 

 iii. 582. Don. Brit. Ins. xvi. 19, 550. Shaw, Gen. Zool. vi. 



