38 



is denser and less distinct; tegulae pale brownish, polished; wing base partly 

 blackish brown; subcosta brownish, stigma and rest of veins yellowish stramin- 

 eous, membrane nearly colorless; legs blackish expept for the tarsi and hind 

 tibiae which are more or less dark brown, legs covered with pale golden hairs ; 

 scopa typical, its hairs uniformly yellowish golden even at base above; hind 

 metatarsi at most, apparently, a little narrower than mid-metatarsi; propo- 

 deum with its enclosure defined, dullish and finely reticulated, rest of upper 

 face of propodeum sculptured somewhat like the mesopleurae but with smaller 

 punctures, and covered with finer pale-ochreous hair; propodeal pleurae with 

 sparse shallow punctures, floccus ochreous; abdomen with its tergum shining 

 and sculptured much like the face, the punctures poorly defined and wide 

 apart; second, third and fourth tergites without an apical, whitish hair-band 

 but with a thin fringe of pale hairs; apical edge of first, second, third and 

 fourth tergites with a brownish stramineous border; second tergite with its 

 elevated portion down the middle : depressed portion :: 14 : 7; fifth tergite 

 shining, reticulate, its punctures coarse and closer together than on the other 

 tergites; pygidium with a finely sculptured, triangular embossed area bounded 

 by flat margin, nearly pointed at apex; tergum with inconspicuous, pale, 

 nearly erect hairs; fimbria and end of abdomen with brownish-golden hair. 



Andrena (Andrena) albisigna, new species. 



Type. — Boston Society of Natural History. 



Type locality. — Mt. Washington, New Hampshire, 2,000 to 4,000 feet, 

 July 6, 1914 (C. W. Johnson). 



Could be confused with A. (A.) adelae Viereck, and closely resembles A. 

 (A.) novae angliae Viereck. 



Female. — Length 9 mm. ; body black, abdomen seemingly tinged with 

 green, mostly covered with pale-ochreous, almost white hairs; head with its 

 facial line : transfacial fine :: 50 : 57; axial fine : temporal line :: 23 : 15; 

 malar line : joint 3 of antennae :: 2 : 8; elevated portion of malar space dis- 

 tinctly shorter than depressed portion; ocelloccipital line : greatest diameter of 

 lateral ocellus :: 3 : 4; head covered with pale-ochreous hairs, front rather 

 definitely, longitudinally sculptured, not elevated into a welt along the fovea; 

 fovea at most : ocellocular line :: 7 : 10; distance between fovea and ocelli : 

 ocellocular fine :: 3 : 10; foveal band present and at upper end of the inner 

 eye-margin : ocellocular fine nearly :: 1 : 10; fovea attenuated toward. its 

 lower end which is at a point apparently half-way between the clypeal fine 

 and the antennal fine; fovea filled with pale yellowish-golden hairs; face nearly 

 polished, indistinctly reticulate, with distinct punctures that are as many as 

 four puncture-widths apart; clypeus slightly elevated above the apical margin, 

 convex, sculptured like the face except that the disc is polished and the 

 punctures are larger and better defined ; clypearea present but poorly defined, 

 clypeus thinly hairy, its sculpture not at all hidden by hairs; labrarea truncate, 

 its width at base : length down the middle :: 12 : 5; width at apex : greatest 

 length :: 4 : 5; labrarea at base : distance between lower corners of clypeus 

 :: 12 : 18; labrum with a fringe of golden hairs, labrum without a suggestion 

 of a median longitudinal crista but polished between the labrarea and apical 

 edge of labrum; joint 3 of antennae :4+5 ::8 : 6; joints 4 and 5 thicker 

 than long, the succeeding joints from a little longer than thick to nearly 

 twice as long as thick in the end joint; antennae blackish throughout; man- 

 dibles atypical, robust, extending to the outer edge of the labrarea, black 

 except for the apical fourth and inner edge which are clear dark reddish; 

 palpi nearly typical; thorax covered with an abundance of pale-ochreous, 

 almost white hairs which are shorter on the dorsulum than the hairs on the 

 mesopleurae; dorsulum dullish, finely reticulated and punctured like the 

 face but more distinctly and closely; notauli represented by a shining fine; 

 mesopleurae sculptured somewhat like the dorsulum but not so closely or 

 distinctly punctured; scutel, except on its edges, hairy and sculptured much 

 like the dorsulum but more shiny and partly almost polished; metanotum 



