[137] HYMENOPTERA 143 



On account of its metathoracic and wing characteristics this new 

 species will fall in a table of the North American species next to P. 

 t ex anus Ashmead, from which it is readily separated by its larger size, 

 structure of antennae and color of the legs. 



Family BELYTID^E. 



Genus Zelotypa Forster. 



Five species have already been characterized in this genus in our 

 fauna, one from Texas, one from Florida, two from Virginia and 

 one from Canada, known only in the male sex. It is somewhat sur- 

 prising, therefore, to find no less than three additional species in the 

 Alaskan material, two being represented in the female sex. 



These new- species may be tabulated as follows : 

 Males 3. 



Females. 



Apterous forms 2 . 



Winged forms. 



Marginal cell fully (or a little more than) twice as long as the 



marginal vein. 

 Black, with scutellum, middle mesothoracic lobe and legs honey- or 



brownish-yellow Z. scutellata. 



Body wholly black, the legs honey-yellow, but with the hind coxae 

 basally and the clavate part of the hind femora obfuscated or fuscous. 



Z. borealis. 



2. Black, the scutellum, the middle thoracic lobe, first two joints of an- 

 tennae and the legs honey- or brownish-yellow Z. scutellata. 



3. Marginal cell and the marginal vein not short, about equal 



in length. 



Black, scape and pedicel brownish-yellow; first joint of the flagellum ex- 

 cised beneath for more than half its length ; legs honey-yellow ; hind 

 coxae basally, clavate part of hind femora and their tibia? apically ob- 

 fuscated Z. alaskensis. 



ZELOTYPA SCUTELLATA sp. nov. 



Female. Winged form. Length 2 to 2.2 mm. Head, thorax, 

 except the middle mesothoracic lobe, and the abdomen black, smooth 

 and shining ; the scutellum, the middle mesothoracic lobe, the first 

 two joints of antennae (sometimes the first five or six), and the legs, 

 brownish-yellow or honey-yellow. Wings hyaline, the veins brown, 

 the tegulae pale yellowish. The antennae are not quite the length of 

 the body, 15-jointed ; the scape is as long as the pedicel and first two 

 joints of flagellum united and slightly curved but not especially thick ; 



