24 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. I3I 



venosa (Wied.) 1821 by Krober (i930g, 1934). The palpi are very small and 

 deeply grooved. = Fidena. 



*nigrithorax Krob. 1930, Zool. Anz., 90(3-4) : 75. (Diachlonis) B. M. A ? in 

 B. M. from Br. Guiana is close but lacks median black on third tergite. It 

 stands over the box label podagricns Fab. 



*nigriventris Krob. 1931, Zool. Anz., 94(9-10) : 254. (Escnbeckia) B. M.(H). 



*mgrhnttata Macq. 1850, Dipt. Exot., Suppl. 4:23. (Paiigonia) M. P. = 

 Fidena marginalis (Wied.) 1830, Lutz (1907, 1909) ; Krober (1933b, 1934). 

 The synonymy is probable but not certain as there are several similar species 

 here. 



*nigrohirta Wlk. 1848, List, 1 : 132. (Pangonia) B. M. = Fidena venosa 

 (Wied.). Krober (i930g). 



*nitens Big. 1892, 5:609. (Myctcromyia) B. M. (H) := Fidena. Krober 

 (1933b) redescribes, but his description and figures inconsistent and probably 

 composite. Fairchild (1951a) genotype of Bornbylopsis Lutz and lonopsis 

 Lutz. 



*nivalis Wlk. 1850, Dipt. Saund., 1:71. (Scepsis) B. M.(H) genotype. Sur- 

 couf (1921); Krober (1928a). 



*notabilis Wlk. 1850, Dipt. Saund., i : 18. (Pangonia) B. M. = Esenbeckia, 

 Krober (1932a) with injramaciilata Lutz as synonym. If notabilis and iu- 

 jramaculata are really synonymous, the species will go in Proboscoides Philip, 

 but since the type of notabilis lacks the proboscis, this is uncertain. See Fair- 

 child (1951a, p. 445). 



*nitiitius Wlk. 1854, List, 5, Suppl. 1:207. (Tahaiius) B. M.(H) = *Tabanus 

 desertus Wlk. 1850. (N.S.) Krober (1934) says type lost. Philip (1952) 

 as synonym of obsolctus Wied., fide Hine MS. 



*obesus Big. 1892, 5:660. (Atylotus) B. M. The type is headless. The bare 

 subepaulets, large size, 14 mm., and general fascies suggest Dasybasis, but I 

 know of nothing resembling it from Mexico or Central America. 



*obliquus Wlk. 1850, Dipt. Saund., 1:28. (Tabmius) B. M. = *Tabanus lu- 

 cidulus Wlk. 1848. 



*obscurehiria Krob. 1930, Zool. Anz., 86 (ii-i2):284. (Tabanus (Phacota- 

 bamis) aphanoptera var.) B. M. Krober (1934) as var. obscuripilis, nom. nov. 

 Not T. obscnrchirta Ric. 1908. = Phaeotabanus obscuripilis Krob. 



*obscitriventris Krob. 1930, Zool. Anz., 87(1-2): 6. (Tahauus (Matroconnus)) 

 B. M. =: *Tabanus (Lophotabanus) albocirculus Hine 1907. Krober (1934) 

 as obscurigaster, nom. nov. Not T. obscuriventris Krober 1929. (N.S.) 



♦ocellus Wlk. 1848, List, i : 143. (Pangonia) B. M. = Dasychela. Ricardo 

 (1900a) noted it was a tabanine. Krober (i93oh) as Tabanus. Says an arti- 

 fact. The species is close to Triceratomyia Bequaert, to Dasychela lim- 

 bativena End., and Dicladocera badia Krob., and the detached head now with 

 the specimen clearly belongs to it. The antennae are now lost. 



*ochraceus Macq. 1850, Dipt. Exot., Suppl. 4:36. (Diabasis) M. P.(H) = 

 Diachlorus bimaculatus Wied. (N.S.) Not D. ochraccns Krober 1928 

 which = ? *D. augitslifrons Krob. 



*ochraceus Macq. 1838, Dipt. Exot., 1(1): 149; 1846, op. cit., Suppl. 1:42. 

 (Tabanus) M. P. 2 $ types. One = Cryptotylus unicolor Wied., the 

 other = Amphichlorops flavus Wied. (N.S.) 



*ocul(ittts P.ig. 1892, 5:606. (Chrysops) B. M. = Chrysops molesta Wied. 1828, 

 Ricardo 1901 ; Krober (1926, 1934). 



