THROSCUS. — CEROPHYTUM. 175 



266 Throscus Latreille. 



1383 dermestoides L. ii. 656. — Ste. M. iii. 120. — De. adstrictor Pz. F. 

 lxxv. f. 15. — Oblong-ovate; pitchy-brown; slightly pubescent ; punc- 

 tured : front with 2 ridges ; thorax with a notch in front, and a faint ridge 

 before the scutellum ; elytra punctate striate, interstices each with a row 

 of coarse punctures : body beneath and legs pitchy-red ; antennae brown- 

 ish. (L. 1-1 1 1.) Old oaks, and gravel-pits : Coombe Wood ; Hertford; 

 Ripley ; Bexley : 5-8. 



1384 obtusus Westwood. — Cur. iv. pi. 163 Ste. M. iii. 120. — Ovate; 



dull chestnut ; finely pubescent ; punctured : head rounded, front obtuse, 

 not ridged ; thorax slightly raised before the scutellum : elytra striated, 

 interstices minutely punctured : legs and antennae dull-red. (L. f-1 1.) 

 On oaks : Plaistow marshes ; Ripley, 6; Ensham, 9 ; moss, Highgate 

 Wood: 1. 



267 Cerophytum Latreille. 



1385 f elateroides Lat. H. ix. 76.— West. Int. pi. 24. f. 5. — Ce. Latreillii 

 Ste. M. iii. 246. — Black : elytra striated ; thorax slightly convex ; 

 antennae dusky. (L. 31.) Near Bristol : 6. 



Fam. 37. ELATERIDiE Leach. 



cclxviii. Aprastus Ant. with 2d and 3d joints rather elongate, apical joint 

 longest : body linear-elongate : tho. with the sides acutely margined in the 

 middle : plates at base of the hind legs gradually dilated within. 

 cclxix. Doeofius Ant. serrate, with 2d and 3d joints slightly elongate, 

 apical one longest : body nearly linear, somewhat robust : tho. with the 

 sides acutely margined in the middle : basal plates abruptly dilated 

 within. 



cclxx. Agriotes Ant. somewhat moniliform, obtusely serrated, 2d joint 

 longer than 3d, which is equal to the 4th, terminal scarcely longer than 2d : 

 body oblong : forehead and tho. very convex, sides of latter not acutely 

 margined in the middle. 



cclxxi. Sericosomus Ant. short, serrated, 2d and 3d joints short, somewhat 

 globose : body nearly cylindric, clothed with a delicate silken pile : tho. 

 short, convex : month deflexed : basal plates broad, equal. 



cclxxii. Ectinus Ant. elongate, 2d and 3d joints short, 4th distinctly longer 

 than the 5th, terminal broad, ovate : body very convex, nearly glabrous, 

 rough : basal plates rather broader within. 



cclxxiii. Limonius Ant. longish, serrated, 2d and 3d joints very small : body 

 oblong, somewhat cylindric : tho. elongate, convex : forehead with a 

 distinct ridge : tarsi with the basal joint rather shorter than the 2d. 



cclxxiv. Elater Ant. shortish, 2d and 3d joints small, 2d smallest : body 

 flat : tho. with the sides not dilated ; forehead with a distinct ridge : basal 

 plates suddenly dilated within and toothed in the middle; tarsi setose, the 

 joints gradually smaller. 



cclxxv. Prosternon Ant. short, 2d and 3d joints small, not dilated, 2d 

 smallest, shorter than 3d : body somewhat oval, flattish, densely pubes- 

 cent : tho. dilated on the sides. 



cclxxvi. Agrypnus Ant. short, compressed, 2d joint dilated, larger than 3d, 

 basal very robust : body broad, somewhat oval, flattish, densely pubescent : 

 tho. dilated on the sides, base tuberculated : tarsi slender, 2d joint 

 shortest. 



cclxxvii. Hypolithus Ant. short, stout, 2d, 3d, and 4th joints small, 

 slender ; basal joint very robust : palpi securiform : body wide, ovate, 



