58 MANDIBULATA. COLEOPTERA. 



both pale, within the apex ; the margin is also pale ; near the suture is a faint 

 stria, reaching to the apex : body glossy pitchy-black beneath, slightly punc- 

 tate : legs pale-ferruginous. 

 The markings on the elytra vary much : the anterior fascia is frequently divided 

 into three spots, of which the marginal one is largest and quadrate, the inner 

 slender, wedge-shaped; the other spots are sometimes united to the pale 

 margin. 



Taken sometimes near London : in ponds on Wimbledon-com- 

 mon, and in Coombe-wood. 



Sp. 22. minimus. Ovatus, niger, elytris apice lineisque tribus pallidis; pedibus 



rufis. (Long. corp. j — 1 lin.) 

 Dy. minimus. Scopoli? — Hyd. minimus. Steph. Catal. p. 47. No. 460. 



Ovate minute; ovate black: elytra with a submarginal pale line, and two at the 

 base : the legs rufous : the antennae dusky at the base. Probably a mere va- 

 riety of the foregoing. 



Found occasionally near London, and in Devonshire. " South- 

 end."— Rev. F. W. Hope. 



Sp. 23. granulans. Oblongo-ovatus, niger, subpubescens, elytrorum margine 

 lineis duabus pallidis, antennarum bdsi pedibusque testaceis. (Long. corp. 

 f-1 lin.) 



Dy. granulans. Linne. — Hyd. granulans. Steph. Catal. p. 47. No. 461. 



Minute; oblong-ovate, black, punctulated, slightly pubescent : head glossy black; 

 thorax shining black, the lateral margins generally pitchy-testaceous, with an 

 abbreviated impressed striola on each side within : elytra ovate, each with a 

 slight pale line in the middle, broadest anteriorly, another commencing at the 

 shoulder, angulated and obliquely bent towards the apex, where it becomes 

 recurrent ; in the margin is also a pale abbreviated streak : body pitchy-black 

 or ferruginous, beneath punctulated : legs ferruginous ; the tarsi and posterior 

 tibiae dusky: antennae pale at the base, black at the apex. 



Not very common : found occasionally in ponds and rivulets near 

 London. " River Cam, Cambridge." — J. C. Dale, Esq. " Netley, 

 Salop."— Rev. F. W. Hope. 



Sp. 24. ovalis. Oblongo-ovatus, subacuminatus, ferrugineus, pubescens, elytris 



pallidioribus lineis quatuor fasciis. (Long. corp. 1^ — if lin.) 

 Dy. ovalis, Marsham. — Hyd. ovalis. Steph. Catal. p. 47. No. 462. 



Oblong-ovate, ferruginous, slightly pubescent, punctulated: head and thorax 

 shining, the latter with its anterior and posterior margins a little dusky: elytra 

 attenuated towards the apex, opaque, with the suture and four lines fuscous, 

 and an oblique stripe of the same colour on the margin : body pale ferruginous 

 beneath, punctulated : legs and antennae pale ferruginous. 



