87 



KiGEiTULTJS, QyllenJiall, Ins. Suec. iv., 502, 10 — 11 {nee Erichson). 

 unicolor, (^Xirhy) Stephens, Wat. Cat. 

 campestris, JErichson. 



2 liu. Dull black ; tlie legs inclined to pitchy, and tbe palpi with 

 the basal joint testaceous, and the second and third pitchy testaceous, 

 more or less suffused with black. Head rather flat. Thorax gently, 

 but decidedly, narrowed behind. Elytra slightly longer than the thorax. 

 The entire insect is strongly and very closely punctured, with the in- 

 terstices almost rugulose ; the punctuation of the abdomen being 

 rather coarser, and not so close as in the other parts. The abdomen is 

 cylindrical, very little contracted behind, and with only faiut indications 

 of the middle keels in the transverse grooves. In the male the sixth 

 segment beneath has a wide and shallow triangular notch. 



Northumb., Cumb., not common. " In burrows of Bledius arena- 

 rius,'' Mr. T. J. Bold. Wicken and Horning Fens, Bungay, Repton, 

 Holme Bush, Charlton, Hammersmith Marshes. 



BETJNNiPES, {Kirby) Stephens, Wat. Oat. 

 unicolor, Erichson, (nee. Stephens). 



1| — If lin. Bather smaller than the preceding species ; more 

 shining, with the elytra shorter, the legs pitchy -red and blackish at the 

 knees, and the antennae pitchy, with the two basal joints darker. Rather 

 closely, and very strongly punctui'ed throughout, with the interstices 

 shining and almost smooth. 



Most abundant, from Northumberland to Brighton. 



OPTICTJS, Gravenhorst, Erichson. 



\\ — :1\ lin. Bather dull black, legs dark pitchy-red, antennae and 

 palpi pitchy, the latter with the basal joint testaceous. Head wide, 

 eyes prominent. Thorax rounded from the middle almost equally, but 

 a little more contracted behind than in front ; very closely, but not 

 very strongly punctured. Elytra but little longer than the thorax, 

 slightly sloped at the shoulders, rather evenly punctured, with the 

 punctuation not quite so close as on the thorax, but stronger, and the 

 interstices somewhat rugulose. The suture shining. Abdomen narrow, 

 attenuate at the apex, very delicately punctured. 



The only insect with which this species could be confounded, is a 

 very small specimen of erasstis, from which its closer punctuation, dull 

 appearance, and more prominent eyes at once distinguish it. 



Horning Fen, Norfolk. Originally taken by the late H. Squire, 

 subsequently by Messrs. Crotch, Matthews, Brewer, and Sharp. 



