1SK 



Gmel., Syst. Nat., V, p. 2883, 1792. 



Meigen, Klass., I, p. 173, 1804 ; Syst. Beschr., II, pp. 63 & 64, 1820. 



Kertesz, Cat. Dipt., Ill, p. 263, 1908. 

 Tabanus luridus, Loevv, Verb. Zool.-Bot. Ges. Wien, VIIF, p. 526, 

 1858 (pt.). 



Sciiiner, Fauna Austriaca, Dipt., J, p. 31, 1862. 



Verrall, Brit. Dipt., V, p. 360, 1909. 

 Tabanus signatus Schiner, Fauna Austr., Dipt., I, p. 29, 1862 (pt.). 



Verrall, Brit. Dipt., V, p. 360, 1909. 

 Tabanus borealis Jaenn., Berlin. Fntom. Zeitschr., X, p. 69, 1866. 



Kertesz, Cat. Dipt., Ill, p. 289, 1908. 



Verrall, Brit. Dipt., V, p. 360, 1909. 

 ? Tabanus bimaculatus, Macquart, Reeuil Soc. Sc. Agr. Lille, p. 484, 

 1S26. 



Meigen, Syst. Beschr., VII, p. 59, 1838. 



Walker, List Dipt. Brit. Mu's., V, Suppl. I, pp. I57*& 170, 1854. 



Gob., Mem. Soc. Linn. Nord France, p, 27, 188 1. 



Kertesz, Cat. Dipt., Ill, p. 288, 1908. 



Verrall, Krit. Dipt., V, p. 360, 1909. 

 Tabanus luridus Matsumura, Journ. Coll. Agr. Tohoku Imp. Univ., 



Sapporo, Japan, IV, 1, p. 64, 191 1. 

 Tadaniis sachalinensis Matsumura, Journ. Coll. Agr. Tohoku Imp. 

 Univ., Sapporo, Japan, IV, 1, p. 65, 191 1. 



A rather medium-sized species with the abdomen not conspi- 

 cuously orange red, with a tuft of black hairs on the vertex behind 

 the ocelli, and with the middle tibiae conspicuously pubescent. 



Female. Head very slightly broader than or about as wide as 

 the thorax, short, about one-third as long as its width, slightly arched. 

 Frontal stripe gradually but slightly diminishing in width from the vertex 

 to the frontal triangle as it is almost parallel-sided, and about three 

 and a half times (or four times) as long as its broadest part or about 

 lour tines (or five and a half times) as long as its narrowest part, ashy 



