144 ASHMEAD 



the first joint of the flagellum is the longest, about one-half longer than 

 the second, the following to the fifth shortening, the fifth oblong, 

 joints 6 to 12 submoniliform, very slightly longer than thick, the last 

 joint fusiform, as long as the fourth. The metathorax is bounded by 

 an elevated carina posteriorly and traversed by five longitudinal 

 carinae (a median and two on each side of it). The wing venation is 

 normal, the marginal cell being fully twice as long as the marginal 

 vein, the stigmal vein, or first branch of the radius, being straight, per- 

 pendicular and about two-thirds the length of the marginal vein. The 

 abdomen, with its petiole, is very little longer than the head and thorax 

 united, the petiole being rather thick, longitudinally furrowed and not 

 quite 2^/2, times as long as thick ; the body of the abdomen is ovate, 

 pointed at apex, highly polished and impunctate, except some stria? at 

 its base where it joins the petiole, the first segment occupying most of 

 its entire surface. 



Female. Wingless form. Length 2.5 mm. Agrees well in strucl 

 ture and color with the winged form, except the antennae are a litte- 

 longer and the legs are more decidedly yellow. 



Type. Cat. No. 5518, U. S. Nat. Museum. From St. Paul Island 

 and Unalaska. Nine specimens. 



ZELOTYPA BOREALIS sp. nov. 



Female. Length 3 mm. Polished black ; first five or six joints of 

 the antennas brownish-yellow; legs honey-yellow, the hind coxae 

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

 Wings hyaline, the venation light brown, the tegulae yellowish. 



The antennae are rather stout, shorter than the body, 15-jointed; 

 the scape is stout, a little thicker at the middle than at the ends and as 

 long as the first three joints of the flagellum (excluding the pedicel) 

 united ; the first joint of the flagellum is the longest, very nearly as 

 long as the second and third united, the third joint is only two-thirds 

 the length of the second, the fourth joint is oblong, the following to 

 last being moniliform, briefly pedicellate, 6 to 12 a little wider than 

 long, the last ovate, not longer than the fourth. Metathorax as in Z. 

 scutellata. Abdomen pointed ovate, the petiole stout, only twice as 

 long as wide, longitudinally furrowed, the interstices between the fur- 

 rows above, wrinkled ; body of abdomen much as in previous species 

 except that there is a median grooved line above that extends to nearly 

 the middle of the first segment. Wing venation as in previous species 

 except that the marginal cell is slightly more than twice as long as the 

 marginal vein. 



