282 NORTHERN ZOOLOGY. 



(393) 1. * Nabicula subcoleoptrata. Subcoleoptrate Nabicula. 



N. (subcoleoptrata) aptera, nigra, obscura ; elytris punctatis margine laterali, antennis, pedibusque, rvfis. 

 Subcoleoptrate Nabicula, without wings, dull-black ; elytra punctured with their lateral margin, and the antennae and legs, 

 rufous. 



Taken with the preceding. 



Length of the body 4 lines. 



DESCRIPTION. 



Body apterous, black, without any gloss. Head subtriangular, antenna? rufous : thorax bilobed, 

 first lobe thrice as long as the last, bell-shaped ; last a little wider than the first, flattish : hemelytra 

 a little shorter than the abdomen, brownish-black, punctured ; lateral margin obscurely rufous ; 

 membrane scarcely differing in substance or colour from the rest of the hemelytrum : legs rufous ? 

 abdomen obtusangular underneath. 



Family HYDROMETRID^. Hydrometridam. 



CLXXII. Genus GERRIS. Lat. 



(394) 1. Gerris rufo-scutellata. Red-scut ellum Gerris. 



Gerris rufo-scutellata. Lat. Gen. Crust, et Ins. iii, 134, 2. Steph. Cat. ii, 352, 9721, 3. 

 La Punaise coureuse d'eau. Stoll. Cimic. 64, 108, t. xv, 108, &c. a. 



Length of the body Gj lines. 



One specimen taken in Lat. 65°. 



DESCRIPTION. 



Body underneath black, covered with silver pile. Head brown-black, subpilose ; two first joints 

 of the promuscis black and robust, the remainder rufous and more slender; antennas rufous with 

 the last joint black ; eyes large, subhemispherical, brown : prothorax dull-ferruginous, with the 

 lateral margin, a dorsal subelevated line, and the scutellum, paler ; legs rufous, pale at the base ; 

 hemelytra dull-ferruginous, with the lateral margin and nervures black : the bead that forms the 

 lateral margin of the abdomen, and the two last segments, are rufous ; the anal spines are very little 

 shorter than the tail. 



The American specimen seems to vary a little from the description of the European ones, but 

 not sufficiently to warrant its being described as a new species. 



