MELANOTUS. 373 



One specimen , New York , The deep posterior dorsal chan- 

 nel and the fine punctures of the interstices of the elytra will 

 distinguish this from the next species ( tenax ) : it may possibly 

 he the male of the preceding species ( pi-rtinax ) . but there is 

 no evidence of it except the general similarity of sculpture : 

 the pubescence is denser and not so long : the thorax , ho- 

 wever , bears pretty much the same relation in the two species 

 as in the two sexes of C. cribulosus. 



Cratonychus dubius. LEG. Loc. cit. p. 479 , 27. 



17. M. OREGONENSIS. Nifjro-piceus , longior, cinereo-pubescens , 

 frontf non concava , vix producta , thorace latitudine longiore , 

 convexiusculo , lateribus obliquis ad apicem rotundatis , angulis 

 posticis divaricatis , sat grosse , lateribus densius punctato , 

 postice canaliculate , elytris fere paraltelis , striis punctatis vix 

 impressis , interstitiis parce punctulatis , pedibus antennisque 

 piceis , his articulo 3 io sequenti sesqui breviore. Long. 4'" 8. 



One specimen, Oregon, Col. M'Call. Sufficiently disiinct 

 from any of those above described and resembling perhaps 

 most nearly C, infauslus , but having the thorax more densely 

 punclured and more oblique on the sides , and the third joint 

 of the antennae hardly more than half the size of the fourth , 

 and only one half larger than the second. 



Cratonychus oregonensis. LEC. Loc. cit. p. 480 , 52. 



18. M. PARADOXUS. Elongatus , nigro piceus , cinereo-pubes- 

 cens , fronte sitbconcava , apice subangulala , thorace minus 

 convexo, antrorsum valde angustato , lateribus rotundatis ( vel 

 potius ad medium obsolete angulatis ) , carina angular i elon- 

 gata , minus dense sat grosse punctato , elytris a basi angus- 

 tatix , parce subtilius punctatis , striis internis obliteratis , 

 antennis pedibusque rufis , illis articulo 2 nd0 3 io que cequalibus. 

 - Long. 6'". 



Melanotus paradoxus. MELSHEIMER , Proc. Acad. Nat. Sc. II , 152. 



One specimen from Pennsylvania , in D r Melsheimcr 's col- 



