1911] ^^^ch— North Ammcan Species of Hydrophorus 63 



Female. Very like the male and about the same size in some specimens; some 

 unshnveled ones a little longer. 



TV^fw" ^^^^' ^""^ ^*^^° ^^'^^^^''- Crawford's, Franconia and 

 Mt Washington, N. H. (Mrs. Slosson); New Bedford, Mass., 

 fr w t'u^^^^ (Hough); Provincetown and Eastham, Mass.. 

 (CW. Johnson); Montreal, Quebec, Sept. 8, 1901 (G. Beaulieu); 

 Battle Creek, JNiich. ; Boulder, Colo. 



I at first identified this with glaber Walker, but according to 

 the description that species has yeUow halteres. The references 

 m my catalogue under glaber, mentioning its occurrence in Alaska 

 and New Hampshire, are probably this species. 



Hydrophorus phoca sp. nov. (fig. 2). 



wit^^''l 1'°"'" "r'"" ^'^ '^'^^^ ^°''"°^ -'^"'^ ^P°"«d ^°g«- Occiput greenish 

 with only the usual postvertical bristles; front and vertex sealbrown, not shining- 

 ace of moderate width, with brown pollen, which is so thin on the upper half tha 

 the green ground color shows through very plainly; this part of the face has deep 

 ongitudina corrugations; palpi dark brown; antenna, wholly black, the first joint 

 short hard y longer than the second; third joint also small; infra-orbital br sties 

 extendmg down almost to the lower border of the eye, beard yellow, no black 

 bris les below the neck. Thoracic dorsum brown above with tlo fai^t rows of 

 lighter spots that mtervene between the bristles of the dorsocentral rows- the 

 posterior part of the thorax is damaged by the pin in the described specimen; 

 cutellum rather bright green, with four large bristles; the bristles of the sides o 

 the thoracic disk are much larger than those of the central part; two small humeral 

 bristles; no hairs behmd the humerus; propleura with yellow hairs only on its 

 lower part, and above them a rather strong yellowish-brown bristle; no perceptible 

 hypopleural hairs; both halteres missing in the described specimen. Front coxL 

 with yellow hairs, long above, and only two or three small black spines at tip; 

 front femur thick at base, below with yellow hairs near base and in the same region 

 a short row of only four or five black spines; the front tibia not much curved al- 

 most straight, seemingly with only minute setul^ on the imier side, but in the 

 specimen it is impossible to see the structures here very well; middle and hind 

 femora long and slender. Wings slightly brownish, with a distinct brown spot 

 on the hind crossvein and another on the fourth vein a little beyond, both dis- 

 tmctly visible to the naked eye; all the veins black to the base. Abdomen smaU 

 and hort. greenish above pruinose on the sides and below, bearing pale hairs below 



Trtr'^tr"-^^, r'r.^' ''^ '^^ segment above; the fourth sternite has 

 a ridge m the middle, which is split from behind forward. 

 Length, 3.1 mm.; of wing. 4.4. 



One male collected by the late Rev. Mr. Livingston, at Corfield. 

 Vancouver Island, B. C, dated 8-7-96; from Professsr Melander. 



