90 THE CANADIAN ENTOMOLOGIST. 



and 4 lines ; female, i inch and 5 lines. A pair were taken by the 

 Esquimaux Ooligbuk in the Great Bear Lake River. [75.] As this 

 species was taken by the useful, worthy and honest Esquimaux Ooligbuk, 

 I trust I may be excused for giving to it his name. [Previously described 

 as Dytiscus conftuens by Say — for description vide Say's Ent. Works ii. 

 ]). 554. — He gives the State of Maine as its habitat; it was taken on 

 the north shore of Lake Superior by Agassiz's Expedition, and is now 

 included in the list of Canadian Coleoptera. Its range, it will be 

 observed, is thus a very wide one.] 



[76.] in. Dvtiscus Harrisii Kirby. — Length of the body 1 inch 

 and 8 lines. One specimen taken in the journey from New York to 

 Cumberland House. 



Body black, underneath banded and clouded with pale chestnut. 

 Head smooth; nose, upperlip, and palpi, reddish-yellow; the latter with 

 the last joint dusky; between the eyes is an obscure, roundish, red spot; 

 prcthorax smooth, except an anterior transverse series of punctures which 

 does not reach the sides ; as in the preceding species it is surrounded 

 by a broad reddish-yellow margin : sculpture of the elytra like that of 

 D. Ooligbukii, etc., but not so grossly punctured at the apex ; side 



reddish-yellow, the yellow stripe terminating in a fork or two branches, 

 the upper one not consisting of dots as in D. Marginal is, etc., but entire 

 and toothed : a reddish-yellow arch marks the dilated posterior coxae, 

 and the base of the abdomen is of the same colour ; # arms and thighs, 

 pale chestnut, tibiae and tarsi of the four posterior legs black : the lobes 

 of the metasternum are remarkablv obtuse. I have named this insect 

 after a very eminent American Entomologist, Dr. T. W. Harris, who well 

 merits such distinction. [One of our commonest Canadian species of 

 large water-beetles. North shore of Lake Superior (Agassiz). A specimen 

 in my cabinet flew in at an open window attracted by light, July 1, 1S64. 



[77.] 112. Dvtiscus (Lcionoius) Fraxklinii Kirby. Plate ii. fig. 1. 

  — Length of bedy 1 inch and 4 lines. A pair taken in Lat. 65 . 



Male. Body oblong-ovate, glossy as if covered with varnish ; under, 

 neath black spotted and banded with pale chestnut ; above dark olive, in 

 certain lights of a beautiful olive-green. Head with a very few minute, 

 scarcely discernible, punctures ; antennae chestnut ; mandibles and palpi 

 black ; nose, upperlip, margins of the prothorax, and side of the elytra, 

 dusky yellow : prothorax distinctly channelled, surrounded within the 



