136 BROOKLYN MUSEUM SCIENCE BULLETIN 3. 3. 
Type, male, and allotype, female, in the Museum collection. Para- 
types in the Nat. Museum collection. 
California: Shasta Springs, May (Kusche ex Van Dyke and G. Franck); 
Dunsmir (Wickham); Carrville, May (Van Dyke); Plummer 
Springs, June (Hopping); Northfork, May (Dietrich). 
Other specimens seen are labelled simply "Cal." 
The prothorax in this form is frequently more convex. A few 
specimens show a faint, very fine rugosity on each side of median line. 
The majority of specimens seen from California have the above 
characters more or less distinct and can be readily separated from the 
typical form; however, two or three females before me have the pro- 
thoracic sculpture very nearly as in certain females of typical emarginata. 
In a few male specimens of typical emarginata the rugosity of the pro- 
thorax is feeble but apparently never as shining as in most of the California 
specimens. 
var. FROSTi new variety. 
This form differs from typical emarginata in being generally of a 
little shorter form and having shorter antennal joints; tooth of the 
posterior femora large, triangular and acute; last dorsal segment always 
deeply emarginate in both sexes; prothorax shining in both sexes, wider in 
about basal half with the sides nearly parallel, feebly or not converging 
behind, the sculpture alike in both sexes and more or less densely rugose, 
the rugosity obliterating generally the minute and large punctures 
entirely, which are always so distinct in typical emarginata and var. 
pacifica. 
Type (male) and allotype (female) from Framingham, Mass. (Frost), 
in the Museum collection. Paratypes in the collections of Mr. C. A. 
Frost and National Museum. 
Alberta: Edmonton, June, August (Carr). 
Manitoba: Aweme, June (Criddle) ; Rembrandt, May (Wallis). 
Ontario: "Ont." (coll. O. Dietz). 
Michigan: Washtenaw Co., May (Hatch); White Fish Point (Hubbard 
and Schwarz) ; Oakland Co., May (Frankenfield) . 
Maine: Cumberland, July (Nicolay); Wales, June (Frost). 
Massachusetts: Framingham, June (Frost); Southboro, May (Frost); 
Cunningham, May (Knab); Andover, June (Frost); Milton, June 
(Knab) ; Northampton, May (Knab) ; Springfield, May (Knab) ; 
Sherborn, May, November sifting (Frost). 
