352 PROCEEDINGS OF THE ACADEMY OF [1897. 



punctures, becoming smaller and very dense on its hindmost por- 

 tion ; enclosure of metathorax ill-defined, irregularly longitudinally 

 wrinkled ; pleura strongly and closely punctured ; tegular piceous ; 

 wings smoky-hyaline ; nervures and stigma very dark brown or 

 piceous ; legs with brownish-ochraceous pubescence ; basal joints 

 of middle and hind tarsi rather broad ; abdomen strongly punctured, 

 rather shiny, practically naked, except for some thin pubescence at 

 base of first segment, lateral grayish-white patches on hind margins 

 of segments 2 to 4-. representing very broadly interrupted bands, and 

 dense reddish- orange pubescence at the apex. Venter with three thin 

 hair bauds. 



$. Length 9 mm.; pubescence more abundant and rufous 

 throughout, of quite a bright tint. Face an antenna? wholly dark ; 

 band on fourth segment of abdomen entire, but very thin in the 

 middle, and, like the other abdominal markings, orange-rufous. 

 Abdomen not so closely or deeply punctured. 



Hab.— Olympia, Wash. (T. Kincaid). The ? May 9th ; the $ 

 April 4th, at willow blossom. In some respects this resembles A. 

 pruni Rob., but it is quite distinct. 



Ceratma nanula n. sp. 



S . Length 4£ mm., shining, very dark bluish-green, brassy-green 

 on the mesothorax. Legs concolorous except the tarsi, which are 

 dark brownish, the small joints of anterior tarsi dull ferruginous. 

 Antenna? very dark brown ; tegula? brown. Wings hyaline, nerv- 

 ures piceous. Tubercles, median third of labrum (but none of man- 

 dibles) and clypeal mark cream color ; the last is inversely T-shaped, 

 the upright portion very broad, and longer than the arms. Punc- 

 tuation ordinary, but the punctures of front and mesothorax large 

 and sparse, leaving shining impunctured areas in the middle of the 

 mesothorax and above the antennce. Abdomen ending in a short 

 point. Hind femora produced beneath to an angle slightly greater 

 than a right angle. 



Hab. — At flowers of Sphceralcea angustifolia, Las Cruces, New 

 Mexico, April 25th. 



Ceratina submaritima n. sp. 



$ . Length about or nearly 6 mm.; differing from nanula in its 

 larger size, longer antenna? (wholly black, or dull ferruginous be- 

 neath) ; the tubercles dark ; the clypeal mark with the upright por- 

 tion short, much shorter than the long lateral portions ; the tegula? 



