66 HYDRADEPHAGA DYTICID^.. 



500 pictus Fab. E. i. 273. — Ste. M. ii. 49. — Dy. arcuatus Pz. F. xxvi. 

 f. 1. — Dull or pitchy red : thorax with sides reddish; elytra pale, the 

 suture, an ohlong spot on the disc, and a stripe on the outer edge, black, 

 leaving a flexuous pale stripe ; legs pitchy. (L. f-li 1.) London district ; 

 S. Wales; Norf. ; Suff. ; Hants; Newcastle; Scotland, &c. : ©. 



95 Hydroporus Clairville. 

 § A. Thorax with the sides rounded. — a. Elytra with the tip dentate. 



501 Frater Spence. — Ste. M. ii. 50. pi. xi. f. 4. — Oblong-ovate, convex, 

 black ; above rusty-testaceous, somewhat opaque and very finely punctu- 

 lated : thorax pale, with a large bilobed black spot at the base ; elytra 

 with the suture and several regular longitudinal lines black ; legs and base of 

 antennae dull-red. (L. H-2 1.) London district ; Carlisle; Camb. ; Suff. ; 

 Norf. ; Hull ; Marton, &c. : not common : 3-6. 



502 halensis Fab. E. i. 198. — Hy. areolatus Ste. M. ii. 51. — Oblong- 

 ovate, rather flat, beneath pitchy-black ; above pale, slightly pubescent : 

 thorax rounded in front, the sides margined, the base impressed and varied 

 with black ; elytra with the suture and several irregular lines on the disc 

 black; legs and antenna? rusty. (L. If 1.) Carlisle; Cambridge; Bottis* 

 ham ; Tradesley and Netley, Salop : 3-7 . 



503 depressus Fab. E. i. 268. — Ste. M. ii. 51 Dy. elegans Pz. F. xxiv. 



f. 5. — Subovate ; rather flat ; dull-red ; above pale testaceous, somewhat 

 opaque and finely punctured: thorax with edge of anterior and posterior 

 margins and 2 spots on the latter black ; elytra with the suture and several 

 irregular lines on the disc black. (L. 1^-2 1.) Oxford ; Salisbury : Bottis- 

 ham; Monxton, and Abbot's Ann, Hants; Winterborne Stoke, Wilts; 

 Water of Leith; Esk, &c. : 3-10. 



b. Elytra not toothed at the tip. 



504 12-punctatus Fab. E. i. 270. — Don. xiv. pi. 496. — Ste. M. ii. 51. — 

 Oblong-ovate ; pale rust-colour ; minutely strigulated : thorax rounded 

 on the sides, anterior and posterior margins black in the middle, that colour 

 produced anteriorly into 2 lobes; elytra black, with 6 pale spots, placed 

 3, 3; legs and antenna? pale rust-colour. (L. 2^-3^- 1.) Near London; 

 Kimpton ; Devon; Carlisle; Netley; Marton; Newcastle, &c. : 3-6. 



505 griseostriatus De Geer. iii. 103. — Ste. M. v. 391 Oblong-ovate; 



rather flat ; black : thorax pale, varied with black in the middle ; elytra 

 with the margin and several interrupted lines pale testaceous. (L 2A 1. ) 

 Near Carlisle and London : rare : 3-6. 



506 lineatus Marsh, i. 426. $ — Ste. M. ii. 52. o — Dy. parallelo-grammus 

 Ahr. F. ii. f. 2. $ — Stu. D. F. ix. pi. 206. f. 1 . $ — Hy. consobrinus 

 Ste. M. ii. 52. $ . ~— Oblong ; beneath black ; above pale testaceous ( $ 

 shining and sparingly punctured ; $ opaque and thickly punctured) : 

 thorax with a large rhomboid discoidal spot ; elytra with the base, suture, 

 and 5 longitudinal lines, black ; legs pale testaceous. (L. 2^-2^ 1.) Near 

 London ; Norwich ; Ipswich ; Netley ; in profusion at Southend : 3-6. 



507 nigrolineatus Schon. S. ii. 33. pi. 4. f. 2 Ste. M. ii. 52. — Oblong- 

 ovate ; beneath black ; above pale rust-colour ; opaque, finely punctured : 

 thorax with a small black spot, ; elytra with the suture and 4 distinct lines 

 black: legs ferruginous. (L. 2-i 1. ) 



Var. Hy. 9-lineatus Rudd Ste. M. ii. 1 92. — Smaller, with the base of 



the elytra, as well as the suture and 4 lines, black. (L. 2 1.) Weyhill and 

 Isle of Bute: 6-9. 



508 picipes Fab. E. i. 269 Ste. M. ii. 52. $ Hy. alternans Kunze. 



— Ste. M. ii. 53. ^ Oblong-ovate; black; above pale dull-red (6* 



shining, coarsely and deeply punctured ; ^ opaque and finely punctured): 



