138 



Body black and shining. Head subrhomboidal, connected with the 

 prothorax by a long cylindrical and transversely wrinkled neck, which 

 altogether gives the animal a serpentine aspect ; legs pale ; shoulders 

 much incrassated, blackish at the tip, armed below with several strong 

 spines j cubits with a single intermediate one ; prothorax bell-shaped, 

 black, dull from inconspicuous pubescence ; scutellum dull, white at the 

 tip ; hemelytra dull from pubescence, blackish-brown, with paler lines 

 which extend into the membrane ; lateral margin white ; abdomen black, 

 with the ventral lateral margin white. 



This species approaches very near to Say's Reduvius raptorius, but it 

 is distinct. 



[282.] 393. Nabicula suBCOLEOPTRATA A'<;>^>'. — Length of body 4 

 lines. Taken with the preceding. 



Body apterous, black, without any gloss. Head subtriangular, antennse 

 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 

 hemelytrura ; legs rufous ? abdomen obtusangular underneath. 



FAMILY HVDROMETRID/K. 



394. Gerris rufo-scutellata Latr. — Length of body 6}^ lines 

 One sficimen taken in Lat. 65". 



Bor^y 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 ; antennae rufous with the last joint 

 black ; eyes large, subhemispherical, brown ; prothorax dull-fen uginous, 

 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. 



[283.] 395. Gerris lacustris Linn. — There were three pupae of 

 this species taken, which do not appear to differ from the European 

 specimens, 



