THli; CANADIAN KNTOMOT^OGTSf . ."iO 



The basal area (ol fore wing) is pale, no definite lines can be made 

 out. The median band is darker than the rest of the wing, and its intra- 

 and extradiscal bounds are almost parallel to each other. Each of these 

 lines runs from the costa, at a sharp angle, to the median vein, then 

 turning inwardly at right angles to its former course, runs in an almost 

 straight line to vein i, and thence curves inwardly to inner margin. 



There is a white, wavy, submarginal line, rather nearer than usual 

 to the margin of the wing, an 1 accompanied on each side by a dark 

 shade. There is a conspicuous black discal spot on the median band, 

 and though no lines can be traced in the band itself, there are the 

 beginnings of two such lines indicated on the costa. 



The clear, conspicuous median band is characteristic of this species, 

 and will enable it to be easily recognized. 



Type, I female, Stockton, Utah, 2 IX, '03, taken by Mr. Thomas 

 Spalding, after whom I name the species. 



I owe the specimen to the kindness of Prof. H. F. Wickham. 



A NEW DIPTEROUS PARASITE OF BATS. 



BY T. D. A. COCKERELL, UNIVERSITY OF COLORADO. 



At the Great Sphinx Minf, south of Crisman, Boulder County, 

 Colorado, alt. 7,000 ft., on Nov. i, 1909, Mr. John J. Blanchard obtained 

 a bat of the species CorynorJiinus macrotis (subsp. paliescens, Miller), 

 which he kindly transmitted to the Museum of the University of Colorado. 

 Upon it were two specimens of the curious Streblid genus Tric/iobuis, 

 male and female. I thought at first that they were T major, Co(iaillett, 

 which they resemble in their relatively large size, but comparison with Mr. 

 C. T. Brues's excellent description and figures in Bull. Amer. Mus. Nat. 

 Hist., XX, 1904, pp. 131-134, shows that they represent a new species. 



Trichobius corynorhini, n. sp. 

 5 . — Length a very little over 3 mm.; wing 3^ ; head, thorax and 

 legs clear, bright ferruginous, with golden-ferruginous hair ; anterior 

 median line on thorax rather obscure, and transverse suture not marked by 

 a black line ; abdomen above purplish plumbeous toward the base, and 

 whitish dorsally about the middle ; halteres white ; claws black ; wings 

 creamy-white, with pale ferruginous veins. The important characters 

 separating this from T. major are : First cross-vein distinctly nearer base 

 than apex of wing ; third (between fifth and sixth longitudinals) cross-vein 



February, 1910 



