DYTICIDiE. NOTERUS. 63 



all the tarsi with five joints : males with the anterior tibiae very short, stout, 

 dentate internally. 



This genus is distinguished with facility from the foregoing by 

 the incrassated joint of the antennse, the emarginate terminal joint 

 of the labial palpi, and convex body, by wliich characters it also 

 differs from Laccophilus ; and from Colymbetes and the following 

 genera it may be known by the absence of an exserted scutellum. 



Sp. 1. crassicornis. Ferrugineus, elytris saturatioribus, lineis tribus punctorum 



impressis, abdomine piceo. (Long. corp. 2^ lin.) 

 Dy. crassicornis. Fabricius. — No. crassicornis. Steph. Catal. p. 48. No. 475. 



Pale-ferruginous, shining : head smooth : eyes black : thorax convex, smooth : 

 elytra very convex, as broad as the thorax at the base, then slightly attenuated 

 towards the apex, which is rounded, of a deep-ferruginous, inclining to 

 chestnut, with the lateral margin paler ; each has three irregular rows of im- 

 pressions at the base : body deep-ferruginous beneath, the abdomen dusky: 

 legs deep-ferruginous; the male with the four anterior femora with a black 

 ring towards the apex. 



Not very frequently met with ; I have taken it once or twice in 

 ditches at Battersea-fields, and on Epping- forest : it occurs in Nor- 

 folk and Suffolk. " In Milden-hall drain ; also in Burwell-fen, 

 Cambs. ,, — Rev. L. Jenyns. " Wandsworth-common. r ' — Mr. Ing- 

 pen. " Whittlesea Mere."— Messrs. Chant and Bentley. 



Sp. 2. sparsus. Plate XI. f. 6. Saturate ferrugineus, nitidus, coleoptrorum 

 disco obscuriori, elytris punctis sparsis impressis. (Long. corp. 2 — 2| lin.) 



Dy. sparsus. Marsham. — No. sparsus. Steph. Catal. 



Deep-ferruginous, shining: head and thorax impunctate: elytra rather dusky, 

 with the margin paler, the disc with impressed dots, placed in three some- 

 what regular lines near the base, and scattered irregularly towards the apex : 

 ' body ferruginous beneath : legs and antennae rufo-ferruginous. 



Var. B. The centre of the thorax and the abdomen beneath dusky or piceous. 



In Entomologia Britannica, the length of this insect is accidentally said to be 

 five lines ; but the identity of the species is unquestionable, from the accom- 

 panying figure having been taken from the original specimen whence Marsham 

 drew his description. 



Of more frequent occurrence than the last, and generally found 

 in the same places : it also occurs in Norfolk; but not yet found in 

 Cambridgeshire. " Plentiful near Kimpton." — Rev. G. T. Rudd. 

 " Wandsworth-common and Epping-forest." — Mr. Ingpen. 



