142 THE CANADIAN ENTOMOLOGIST 



with comastes Will, as a synonym. As .stated (1904, Ohio Nat. V. 235) the 

 species is readily separated by its wide front and denuded subcallus. 



The species is quite common on Vancouver Island and on the mainland of 

 British Columbia in the Lower Fraser Valley. 



Tabaiiiis lasioplitlialiniis Macquart. This is the only species of the group in 

 which all the cross-veins of the wings are decidedly tinged with brown, which 

 renders identification quite easy; other features are the denuded subcallus and 

 the presence of pale yellowish oblique .stripes laterally on the reddish areas of 

 abdomen. It is just possible that occasional specimens occur in which the usual 

 maculation of the wings is absent ; one or two specimens before me which lack 

 such maculation seem in all other respects to agree with normal specimens of 

 lasiophtlialmus. The species extends across the entire continent. 

 Tabaiius trepidus, sp. nov. $, l^alpi long, thin, not swollen at base and tapering 

 to a fine point, deep yellow-orange, rather heavily clothed with black hairs ; an- 

 tennae reddish, the dorsal and terminal portion of 3rd. segment blackish ; 3rd 

 segment rather chunky and only moderately excised donsally at base ; subcallus 

 not denuded; front dull yellowish, moderately broad with callosity and a spindle 

 shaped patch above it shiny black ; thorax dull blackish with the usual pale ob- 

 solescent stripes and the antealer tubercles slightly tinged with reddish ; abdomen 

 much as in lasiophthalmus with lateral areas of first four segments broadly red- 

 dish-orange, with distinct traces of pale oblique yellow stripes, and with a black 

 dorsal band, widest on 1st segment; ventrally yellow-orange, more or less shaded 

 with smoky, terminal segments blackish; legs blackish, the proximal half of all 

 tibiae tinged with orange-yellow ; wings dull hyaline, costal cell and area sur- 

 rounding longitudinal veins in basal half of wing tinged \mth brown. 



Length 14-1 5mm. 

 Holotypc. 15, Ottawa, Ont. (June 26th., W. Metcalfe) in Canadian National 



Collection. 

 Paratypcs. Numerous $'s from Shelburne, N. S. (July 1st., A. Gibson) ; Har- 

 court, N. B. ; Ottawa, Ont. ; Ft. Coulonge, Que. ; Awemc, Man. and 

 Peachland, B. C, in Canadian National Collection. 

 The species has been frequently confused with cpistatcs ( ). S., but can 

 at once be differentiated by the long thin palpi; from affinis it differs in its 

 smaller size and less excavated third joint of the antennae. 



'rabuuus iiiinuvculws Hine. A single s])ecimen of this small si)ecies is in the 

 Canadian National Collection, kindly identified for me by Prof. J. lline; it 

 was captured at Ottawa, (Mer bleue, 26th., June, 1904) by Mr. W. Metcalfe. 

 The palpi are extremely thin and the antennae show scarcely any excision of tlu- 

 basal portion of the 3r(l joint. The subcallus is covered with a fine ochreous 

 pollen and the callosity is brownish, extending up the front as a thin black line 

 to the ocelligerous tubercle which is also brown. 



Tabanus epistates O. S. Several species have been confused under this name 

 which would account for Hine's statement in his paper on W^estern Tabanidae 

 (1904, Ohio Nat. V, 236). Osten Sacken's characterization is so clear, how- 

 ever, as to leave no doubt in any mind as to the species to which the name should 

 be applied. The narrow coarctate front is quite characteristic ; the palpi are 

 moderately long, pale ochreous and distinctly swollen at the base, the subcallus 



