1897-] ENTOMOLOGICAL NEWS. 23 



dian, the areolet or second submarginal cell obliterated, evidently by the 

 union of the two transverse cubital nervures as the only one now present 

 is somewhat stout ; the cubitus is indicated by a stump of a vein which is 

 shorter than the transverse cubitus ; marginal cell shorter than the first 

 submarginal cell, slightly rounded at apex, but not appendiculated, about 

 two and one-half times as long as wide. Abdomen oblong-oval, narrower 

 than the thorax, with seven distinct segments ; segments 1-3 occupying 

 most of the surface, the first the longest, the second and third subequal ; 

 segments 4-7 united, not longer than the third. 



In venation and general appearance this new genus is not unlike 

 Nitela Latr., and will naturally, on account of the venation of 

 front wings, come next to it in any natural arrangement of the 

 genera of the Larridae ; but is readily separated by the strongly 

 emarginated mandibles, the slight difference in size and shape of 

 the marginal cell and by the cubitus in the hind wing originating 

 somewhat farther away from the transverse median nervure. 



Nitelopterus slossonae sp. n. (j\ Length 3.5 mm. Black, more or less 

 clothed with a silvery pile, the head in front and thorax above bronzed ; 

 clypeus and face below insertion of antennae clothed with a dense, silvery 

 pubescence ; scape beneath, mandibles, tibiae and tarsi, ferruginous ; an- 

 terior and middle tibia? on upper surface more or less dusky ; apex of 

 tarsal joints armed with black spines; flagellum filiform, joints 1-7 sub- 

 equal 4 and 5 distinctly longer than i and 2, or about four times as long 

 as thick. Abdomen with segments i-% banded with silvery pile on apical 

 margins, less distinct on the following segments ; the segments i and 2 

 have also a more or less distinct testaceous spot at apical middle. 



Hab . Lake Worth, Florida. (Mrs. Annie T. Slosson). 



-o- 



SOME SPECIES OF PERDITA FROM NEBRASKA. 



BY T. D. A. COCKERELL, N. M. Agr. Exp. Station. 

 So far as I am aware, no species of Perdita has ever been 

 recorded from Nebraska, so the following account of some just 

 received from Prof. L. Bruner will possess interest. 



(i). Perdita albipennis Cresson, 1868. Sand Hills, Neb., July. Both 

 sexes. 



(2). Perdita bruneri n. sp. West Point, Neb., August, 1887. One of 

 each sex, $. About 6 mm. long. Head and thorax dark olive-green, 

 dullish, with bright lemon-yellow markings. Face bare, vertex, cheeks 

 and thoracic dorsum with the usual sparse pubescence, becoming dense 

 and conspicuously white on lower part of cheeks and lower part of pleura. 

 Head ordinary, cheeks unarmed. Face below level of antenna' all yellow, 

 except clypeal dots, and a black streak at junction of dog-ear mark with 



