268 THE CANADIAN ENTOMOLOGIST. 



Experimental Farms, Ottawa; W. H. Harrington, F.R.S.C, Ottawa; 

 John Dearness, B.A., Vice-Principal Normal School, London ; Henry H. 

 Lyman, M.A., F.R.G.S., F.E.S., Montreal: Rev. T. W. Fyles, D.C.L., 

 F.L.S., South Quebec. 



Librarian and Curator — J. Alston Moffat, London. 



Auditors — W. H. Hamilton and S. B. McCready, London. 



Editor of the Canadian Entomologist — Rev. Dr. Bethune, London. 



Editing Committee — Dr. J. Fletcher, Ottawa ; H. H. Lyman, 

 Montreal ; J. D. Evans, Trenton ; W. H. Harrington, Ottawa ; Professor 

 Lochhead, Guelph. 



Delegate to the Royal Society — Rev. Dr. Bethune, London. 



Delegates to the Western Fair — J. A. Balkwill and W. E. Saunders, 

 London. 



Finance Committee— Dr. Bethune, J. Dearness and the Treasurer. 



Committee on Field Days — The Chairmen of the Sections and Dr. 

 Woolverton, Messrs. Balkwill, Bowman, Law, Moffat, Rennie and 

 Saunders, London. 



Library and Rooms Committee — Messrs. Balkwill, Bethune, Bow- 

 man, Dearness, Moffat and Saunders, London. 



A NEW BOM BUS FROM COSTA RICA. 



BY J. C. CRAWFORD, JR., WEST POINT, NEBR., AND MYRON H. SWENK, 



LINCOLN, NEBR. 



Bombus leucomelas, n. sp. — ^. Black, with deep black pubescence, 

 except that on anterior half of mesothorax, which is grayish, tipped with 

 black, and on abdominal segments 3-6, which is pure white ; clypeus 

 arched, weakly and very sparsely punctured ; labrum basally with two 

 widely separated tubercles ; joint i of flagellum equal to 2 and 3 together; 

 wings deeply infuscated, iridescent ; basal joint of hind tarsi not pointed 

 at apex ; pubescence of legs black. Length 21-22 mm. 



^'. Similar to ? , but much smaller, the third abdominal segment with 

 black pubescence, the clypeus more strongly punctured. Length, 10-14 

 ram. ^ . Unknown. 



One 5, Cartago, June, 1903; one $, Volcano Irazu, February 22, 

 1902 ; four 5$, Monte Redonda, March 3, 1902. 



Near to B.funebris, Sm., from which it differs in its larger size, the 

 pubescence of the mesothorax not snow-white on the disc, and the third 

 abdominal segment not black. 



