Sept., I9I7-] Fall: New Dytiscidje, 165 



The type is a male from Winnipeg, Manitoba, sent me by Mr. J. 

 B. Wallis, and bearing date vi — 3 — 11. Other examples before me 

 are labeled Edmonton, Alberta (Carr), and Magnolia, Colorado 

 (Henderson). Mr. Sherman — in lift. — gives the following additional 

 localities. Higher altitudes of the White Mountains in New Hamp- 

 shire (Lake of the Clouds, 5,000 ft.; Starr Lake, 4,890 ft.; Storm 

 Lake, 4,930 ft.); Montreal, Quebec; Mt. Mansfield, Vermont; Mar- 

 quette, Michigan; Three Lakes, Wisconsin. The Colorado speci- 

 mens have the elytra of an ochreous color, noticeably paler than in 

 the Canadian ones, but there seems to be no other difference. 



In general appearance this species resem'bles mexicanus rather 

 closely, but the latter is not so regularly oval, being' a little more at- 

 tenuate posteriorly; the elytra are closely irrorate, as is usual in the 

 genus (not at all so in inconspicuus), the antennae are more slender, 

 the intermediate joints more than twice as long as wide, the terminal 

 joint not darker; the metasternum blacker, the male with evident 

 though fine coxal file ; the size a little larger. 



Laccophilus schwarzi new species. 



Form narrowly ovate, posteriorly attenuate, the point of maximum width 

 in advance of the middle of the length ; surface highly polished, glabrous, vir- 

 tually impunctate except for a few fine punctures near the front of the pro- 

 notum, and the usual irregular series along the middle of each elytron ; color 

 rufotestaceous above and beneath, the elytra variegated with fuscous, a small 

 diffuse fuscous spot at the middle of the front margin of the pronotum, a 

 similar shade along the middle of the base, and beneath at the outer margin 

 of the hind coxal plates. The color of the elytra may best be described as 

 fuscous with testaceous markings as follows : An undulating subbasal trans- 

 verse band often interrupted at the suture, an irregular discal quadrate spot 

 at the apical third, between these several narrow longitudinal lines ; and also 

 the extreme apex. Antennae and legs entirely pale. Front tarsi of male 

 scarcely at all incrassate and with very few squamules beneath ; coxal file 

 entirely wanting. Length 3.9 to 4.2 mm. ; width 2 to 2.2 mm. 



Virginia (Ash Grove — type c?) ; Maryland (Bladensburg — Sep- 

 tember). 



Eight examples are before me, all submitted by Mr. Sherman. Of 

 tliis species Mr. Sherman writes : " Originally found by Mr. Schwarz 

 at Bladensburg, Md., and has been taken, so far as I know, only at 

 the two places (mentioned above), both near Washington, and only 

 in September, in the almost dried-up brooks, in eddies where fallen 



