NEW BRITISH SPECIES, ETC., IN 1868. 19 



It is, I believe, the insect hitherto known to us as H. nigrita, 

 Fab., and is described by Thomson as like H. pubescens in 

 size and almost in build, but with the elytra nearly glabrous, 

 less rounded at th^ apex, more sparingly punctured, with 

 the row of larger punctures scarcely perceptible, and the disc 

 of the thorax smooth. 



As Mr. Crotch notes, Thomson, in his Supplement, in- 

 verts the names of jff . pubescens and -ET. nigritay considering 

 nigrita of Erichs. and Skan. Col., vol. ii, to be the true 

 pubescens, GylL, and the pubescens of Skan. Col., vol. ii, to 

 be true nigrita, Gyll. To add to this confusion (already 

 bad enough as far as we are concerned, through our nigrita 

 being apparently neither of these two insects), there is a 

 printer's mistake in the supplemental reference to the pages 

 of the second vol. of Skand. Col.; both species being re- 

 ferred to as at p. 23, instead of p. 24, of that vol. 



Thomson separates his present nigrita from his present 

 pubescens by its oblong-oval shape, the fuscous sides to its 

 elytra, and the stronger punctuation of its metasternum, 

 sides of posterior coxas and base of abdomen. Yii^ pubescens 

 he states to be of the build of S. planus, but two sizes 

 smaller, more obtuse on each side, with entirely black 

 antennae and the last joints of its antennae shorter; and, in 

 addition to the chaiacters above mentioned, gives the dense 

 pubescence of its elytra as another characteristic for it, com- 

 pared \^iih glabellas. 



12. Hydroporus elongatulus, Sturm ; Thoms,, Sk, 



Col., ii, 29, ix, 82; Schaum, 1. c, 68; T. J. Bold, 



Ent. M. Mag., vol. iv, p. 284. 



Mr. Bold records a male specimen of this species, taken 



on a moor at Lanercost, Cumberland, and compared with 



c2 



