250 JOHN L. LECONTE, M. D, 



and more or less extended along the apical margin of the prothorax. 

 but recedes from it and agrees with our nimhatus in the small cusp 

 near the tip of the last ventral segment (anal tooth) being prominent 

 and acute.] 



Hydroporus striolatus 'Lec.^=H. lateralis XTlQvhsi. [This synonymy is cor- 

 rect, and that printed in my List is wrong.] 



Hydrocharis grandis Zimm. — Long. 8 lines This species differs fr>in cara- 

 boides and ohtusatus by the elytra being more pointed behind, with the rows of 

 punctures extremely fine, not becoming more obvious towards the tip, as is the 

 case in each of those species. — South Carolina. [But two elytra remain of this 

 species, which seems quite distinct by its greater size.] 



Philhydrus TpygmsBVLS.^IT^/drophilus pi^'^m. Fabr. Ent. I, 186.=5'. nebulosus 

 Say, Long's Exp. 2, 277. 



Philhydrus reflexipennis Zimm. — Long. If — 2 lines. Elongate oval, yellow- 

 ish-brown, beneath blackish, upper surface very distinctly and thickly punc- 

 tured ; elytra behind with strongly depressed, almost reflexed margin. — New 

 Jersey. [Very closely allied to H. pcrplcxus Lee, but smaller, with more strong- 

 ly margined elytra, and more prominent and acutely pointed mesosternal 

 carina.] 



Philhydrus nitens Zimm. — Long. 2J lines. Black, margined with yellow, be- 

 neath and legs brown; form size and color as in H. cinctu.i, but the upper sur- 

 face is more feebly punctured, and very shining; the mentum is shorter and 

 broader, and the prominence of the mesosternum short and placed transverse- 

 ly. — North Carolina. 



Philhydrus semistriatus Zimm. — Long. If — 2 lines. Black, prothorax and 

 elytra margined with ferruginous-yellow, body oval, distinctly punctured, ely- 

 tra towards the tip distinctly punctate striate. — Maryland. [In this species too, 

 the mesosternum is not carinate, but transversely prominent.] 



Cyclonotum aemiglobosum Zimm. — Long. 1 — IJ lines. Shining black, palpi 

 and feet testaceous; head and prothorax almost smooth; elytra distinctly and 

 thickly punctured, without any striae. — Carolina. [This species is allied to es- 

 triatum, but differs by its broader and more rounded form.] 



Cercyon naviculare Zimm. — Long. § line. Black, with a slight bronzed re- 

 flexion, shining, reddish translucent at the suture and side margin of the ely- 

 tra ; palpi, antennceand legs yellow; prothorax smooth, side margins somewhat 

 converging in front; elytra very evidently compressed, pointed behind, finely 

 punctured, with 11 fine rows of punctures becoming indistinct towards the tip, 

 suture elevated behind. — Middle States. 



Cercyon melanocephalum.=^7>erMiesie5 mdan. 'Linn.=Sphocj-idium apicialis Say 

 Jour. Acad. Nat. Se. iii, 20.'?. 



Cercyon pygmaeuin.=;Sp/ta;rirfiM»t T^y^rwi. Illiger. Found both in Europe and 

 North America. 



RHYPOPHAGA. 



Cyrtusa blandissima Zim. — Long. 3 line. Ferruginous, shining; front finely 

 punctured; pr'ithorax behind not wider than in front, somewhat cmarginateat 

 tip, with the sides slightly deflexed, but only feebly rounded, the front angles 

 therefore are nearly rectangular, disc feebly impressed and very finely punc- 



