218 



LAKE SUPERIOR. 



affinis. 



62 scaber. 

 HYDROPHILUS Fair. 



glaber Hbst. Col. 7, 298. 



lateralis F. El. 1, 251. 



nimbatus Say. J. Ac. 3, 203. 



obtusatus Say. J. Ac. 3, 202. 

 LACCOBIUS Leach. Er. 



punctatus Mels. P. Ac. 2, 100. 

 HYDROBIUS Leach. 



( PaiLarDRtrs Sol.) 



lacustris. 



perplexus. 



nebulosus. 



Hydropldlus neb. Say. Exp. 2, 277. 

 CYCLONOTUM Dej. Muls. 



subcupreum. 



Hydrophilus subc. Say. J. Ac. 5, 



189. 

 CERCYON Leach. 



mundum Mels. P. Ac. 2, 102. 



ambiguum. 



dubium. 



vagans (Crytoplcurum Muls.) 

 NECROPHORUS Linne'. 



hebes Kb. N. Z. 97. 



orbicollis Say. 



var. Hallii Kb. N. Z. 98. 

 4-maculatus Dej. Cat. 

 pygmseus Kb. N. Z. 98. 

 velutinus Fabr. El. 1, ?34. 

 SILPHA Linne'. 



americana Linne' S. Nat. 2, 570. 

 var. ? Oiceoptoina affine Kb. N. Z. 



103. 



insequalis F. El. 1, 340. 

 lapponica Hbst. Fabr. El. 1, 338. 

 caudata Say. J. Ac. 3, 192. 

 CATOPS Fabr. 



63 termiuans. 

 CEPHENNIUM Mailer. 



MEQALODERUS Sleph. 



64 n. s. 

 SCYDM.ENUS Latr. 



subpunctatus. 



pilosicollis 

 BRYAXIS Knoch. 



propinqua. 



longula. 

 FALAGRIA Leach. 



dissecta Er. 49. 



var. erythroptera Mels. P. Ac. 



64 H. scaber. JEneo-niger, capite tlioraceque granulis dense scabrosis, hoc basi an- 

 gustato, lateribus late excavate, dorsoque foveato, lineis 5 impressis, intermediis sinua- 

 tis, elytris pone basin sensim ampliatis, versus apicem oblique attenuatis, crenato- 

 striatis, basi bicarinatis, pone basin oblique impressis, interstitiis pone medium alterna- 

 tim tuberculatis. Long. -13. 



The third and fifth interstices have each three tubercles, the anterior one being small : 

 the seventh has two, and the ninth a very slight elevation. The striae are deeper 

 towards the margin than at the suture. 



63 C. terminans. Ovatus minus convexus, niger opacus, dense pubescens, ruguloso- 

 punctatus ; thorace antice angustato, lateribus rotundato, basi utrinque sinuato, angulis 

 posticis subacutis, elytris stria suturali valde impressa, pedibus fuscis, antennis apice 

 parum incrassatis, apice summo flavo,basi testaceo. Long. -15. Pic : under old carrion. 



$ tarsi antici, dilatati ; tarsi interrnedii articulo 1 m elongato dilatatoque. 



64 This species is the analogue of the European C. minutissimum ; it is no larger 

 than a Trichopteryx : I found but a single specimen on St. Joseph's Island, and al- 

 though it was safely secured in a bottle, it was not there by the time I reached camp. 

 I therefore forbear naming it, merely directing the attention of future explorers to this 

 very interesting species. 



