552 PROCEEDINGS OF THE ACADEMY OF [Nov., 



stramineous margin, anal process narrow, almost parallel sided and 

 shallowly emarginate at apex, tergum with rather inconspicuous 

 hairs that are supplemented on the sides of the second, third and 

 fourth tergites by thin ochreous apical hair bands, hair at apex of 

 abdomen of a golden hue. 



Andrena (Andrena) caliginosa 1 new species. 



Type. — No. 4,039. The Academy of Natural Sciences of Phila- 

 delphia. 



Type Locality. — San Jose, California. (Hold.) 



Related to A. (A.) decussata Viereck. Probably synonymous 

 with A . (A.) nigra Provancher. 



Female. — Length 10.5 mm.; body black, covered throughout with 

 black or blackish brown hairs; head with its facial line : transfacial 

 line :: 72 : 88, axial line : temporal line :: 37 : 21, malar line : joint 

 3 of antennae :: 4 : 15, ocelloccipital line : greatest diameter of 

 lateral ocellus :: 5 : 6, elevated portion of malar space distinctly 

 shorter than depressed portion, front rather distinctly, longitudinally 

 striato-reticulate, not elevated into a welt along the fovea, fovea at 

 most : ocellocular line :: 12 : 16, foveal band virtually wanting, 

 distance between fovea and ocelli : ocellocular line :: 6 : 16, fovea 

 gradually attenuated below its middle and continued to a point 

 apparently above the antennal line, fovea filled with dark seal-brown 

 hairs, face mostly nearly polished, partly indistinctly reticulate, 

 with distinct punctures that are mostly almost adjoining or one 

 puncture width apart, clypeus slightly elevated above the apical 

 margin, convex, not so closely sculptured as the face, the punctures 

 larger and well defined, clypearea present, rather poorly defined 

 throughout, clypeus thinly hairy, its sculpture not at all hidden by 

 hairs, labrarea subemarginate, its width at base : length down the 

 middle :: 8 : 4, width at apex : length down the middle :: 6 : 4, 

 greatest length : width at base :: 5 : 8, labrarea at base nearly 

 one-third as wide as the labrum, the latter with a fringe of dark 

 brownish hairs, labrum with a median longitudinal crista between 

 the labrarea and apical edge of labrum, joint 3 of antennae : 4 + 

 5 :: 15 : 10, joint 4 a little thicker than long, joint 5 a little longer 

 than thick, succeeding joints a little longer than thick, except joint 

 12 which is distinctly longer than thick, antennse blackish throughout, 

 mandibles typical, robust, extending nearly to the outer edge of the 

 labrarea, black except for the apical third which is dark reddish, 



l This specific name was proposed for this species by Prof. W. M. Davis. 



