DYTICIDJE. — P^LOBIUS. 43 



an undulated row of impressed dots, and an obsolete short stria on each side, 

 as in the preceding insect: elytra acuminate, punctate-striated, the striae 

 dusky, the interstices immaculate and impunctate : body pale-testaceous be- 

 neath ; ventral laminae finely punctate : legs and antennae pale. 

 Closely allied to the last, but the striae on the elytra dusky, the spaces between 

 immaculate and impunctate : the disc of the thorax more obsoletely punctate. 



Found near London. " S waff ham-fen." — Rev. L. Jenyns. 



Sp. 11. melanocephalus. Piceo-testaceus, etytris prqfunde punctato-striatis, 

 striis infuscatis, interstitiis obsoletissime maculatis, capite nigro-piceo. (Long, 

 corp. 1 lin.) 



Ha. melanocephalus mihi. Steph. Catal. p. 43. No. 424. 



Less than any of the foregoing: pitchy -testaceous ; the head pitchy-black, the 

 vertex deepest, punctulated : thorax ferruginous, very finely punctate through- 

 out, especially on the hinder margin, which is rather depressed : elytra acu- 

 minate, deeply punctate-striated, the striae dusky, with the interstices ob- 

 scurely spotted with black, and impunctate : body testaceous beneath j ventral 

 laminae rather deeply punctate: legs and antennae testaceous; the latter 

 palest. 



I have one specimen of this insect, which I obtained from the 

 Marshamian Collection : its locality is unknown to me. 



Sp. 12. brevis. Rufo-testaceus, etytris obtusis, subcinereis, punctato-striatis , 

 striis infuscatis, interstitiis immaculatis, thoracis disco punctulato. (Long, 

 corp. 1 J lin.) 



Ha. brevis. Kirby MSS.—Steph. Catal. p. 43. No. 423. 



Rufo-testaceous : head slightly ferruginous : thorax with the disc punctulate, 

 the margin more deeply so, especially behind, where it is a little depressed, 

 and has a faint rudimentary striola on each side : elytra obtuse, slightly cine- 

 reous, punctate-striated, the striae dusky, the interstices immaculate : body 

 beneath pale-testaceous; laminae paler, deeply punctate: legs and antennae 

 ferruginous. 



Distinguished from the nine preceding insects by the obtuseness of the apex of 

 the elytra, and from the three last by the punctulated thoracic disc. 



Of this species I have also one specimen only, which I caught 

 near London, and compared several years since with Mr. Kirby's, 

 which were taken in Suffolk. 



Genus LXXVIII. — P^lobius, Schonherr. 



Palpi, external maxillary with the terminal joint subclavate, the preceding 

 elongate, clavate, with a tooth on its inner edge, the two basal rather short : 

 labrum very narrow, entire, with a depression on its anterior edge : mandibles 

 obtuse, strongly bidentate at the tip : mentum anteriorly emarginate : Antennae 

 distinctly 11 -jointed, the basal joint very large and thick, the second some- 



