90 PHlLHYDRIDA. — HYDROrmLIDVE. 



dusky. (L. 3-3^ 1.) Kensington Gardens; Windsor; York; Yaxley 

 Fen ; adhering to roots of aquatic plants ; 6-7. 



122 Berosus Germar. 



694 luridus L. ii. 665. — Pz. F. vii. f. 3. — Ste. M. ii. 125. —Oblong- 

 ovate ; griseous- yellow ; punctate : head brassy-green ; thorax with a 

 brassy-green spot on the disc of a squarish form, rather narrowed in 

 front ; elytra crenate-striate, some dots on the stria?, and spots on the 

 interstices, blackish ; legs pale, the base of the 4 hinder thighs and the tips of 

 the tibia? and tarsi dusky. ( L. 2|-2| 1. ) London district ; Southend ; 

 Cambridge ; Norfolk ; Suffolk ; Devonshire ; Swansea, &c. : 4-6. 



695 a?riceps Spence. — Cur. pi. 240 <j> . — Ste. M. ii. 1 26. — Ovate ; con- 

 vex ; ochreous-yellow ; punctulated : head brassy, or coppery-black ; tho- 

 rax with 2 parallel brassy- lines on the disc (rarely united), divided by 

 a dull red streak ; elytra very globose, deeply crenate-striate, the inter- 

 stices punctured, and more or less spotted with dusky, or black : legs pale, 

 the 4 hinder dusky at the base. (L. 2^-3 I.) Wandsworth Common; 

 Southend ; Bottisham ; Norfolk, and Devonshire : 4-6. 



696 globosus Curtis fo. 240. — Ste. M. ii. 126. pi. xiv. f 5. — Rather 

 oblong-ovate, obtuse ; greenish-yellow ; deeply punctured : head brassy- 

 black (sometimes with a dull red frontal spot) ; thorax with an irregular, 

 outwardly toothed, greenish- or brassy-black spot on the disc, having a s-hort 

 longitudinal dull red ridge in front ; elytra deeply crenate-striate, stria? 

 dusky, the interstices more or less spotted with black; legs dull red; 4 

 hinder dusky at the base. (L. 2^1. ) Hertford; Whittlesea Mere; Bot- 

 tisham : 4-7. 



§ B. Enoplurus Hope. 



697 spinosus Ahr. F. iii. f. 5. — Ste. M. v. 400. — Black, above griseous ; 

 punctured : thorax sometimes with 2 obscure dusky clouds, placed trans- 

 versely : elytra with irregular blackish clouds, punctate-striate, the outer 

 margin towards the apex with an acute, short, straight spine. (L. 2^-3 1.) 

 Salt marshes near Lyndhurst : 4-6. 



123 Hydrobius Leach. 



698 oblongus Herbst. vii. 300. pi. 113. f. 10. — Hy. picipes Ste. M ii. 127. 

 — Hy. chalconotus Cur. vi. pi. 243. — Oblong ; deep pitchy-black, or 

 slightly brassy ; shining, and very thickly punctured : thorax with 2 

 shallow fovea? on the disc ; elytra very obsoletely punctate-striate, punc- 

 tures remote ; legs pitchy; tibia? and tarsi reddish. (L 3|-4 1.) Banks 

 of Thames below Gravesend ; Whittlesea Mere ; Lake of Killarny : 4-6. 



C99 fuscipes L. ii. 664. — Pz. F. lxvii. f. 13. — Ste. M. ii. 128. — Oval ; 

 pitchy-black ; very glossy, very thickly punctured, sides of the head and 

 thorax with some large punctures : elytra punctate-striate, the alternate 

 interstices with deeper punctures ; legs pitchy-brown ; tarsi red : legs 

 sometimes pale red, with base of the thighs dusky. (L. 3^-3^ 1.) London 

 district; Bristol; Southend; Dorset; Scotland: 4-6. 



700 chalconotus Leach. — Ste. M. ii. 128. — Oval; coppery- or brassy- 

 black, sometimes purplish, or green -brass ; coarsely punctured : elytra 

 crenate-striate ; legs pitchy-testaceous, tarsi paler, and base of the thighs 

 dusky. (L. 3-3^ 1.) London district; Spitchweek ; Bottisham, &c. : 4-6. 



701 subrotundus ~Ste. M. ii. 128. — Short, somewhat globose; pitchy-black; 

 coarsely and thickly punctured : elytra deeply punctate-striate, the alter- 

 nate interstices with deeper punctures ; body beneath dull black ; legs 

 pitchy-black. (L. 2i-2fl.) Near London : 4-6. 



124 Philhydrus Sailer. 



702 melanocephalus Fab. E. i. 253. — Ste. M. ii. 129. — Hy. 4-punctatus 



