NATURAL SCIENCES OF PHILADELPHIA. 387 



FORNAX Lap. 



F. b a s a 1 i s , niger, elongatus, subcuueiformis, dense subtiliter puncta- 

 tus, nigro-pubescens ; elytris vix striatis, basi late cinereo-pubescentibus, tho- 

 race latitudine paulo longiore, pone medium canaliculato, et triangulariter 

 late excavato. Long. 8 mm. 



California ; Mr. Akburst ; specimens were also obtained by Dr. Horn. This 

 species is more robust than F. cy lin dr icoll is, to which it bears resem- 

 blance on account of the sculpture and thoracic impression, but it differs by 

 the grooves for the reception of the antennae being feeble, and ill defined, and 

 by the fourth tarsal joint being not at all dilated. It agrees with F. c y 1 i n- 

 dricollis in having the third antennal joint twice as long as the fourth, 

 and in the ungues being not toothed. 



F. calceatus belongs to the genus Dromseolus Kies., which, as ap- 

 pears to me, should not be separated from Fornax ; to those who regard it as 

 distinct, the name Isarthrus Lee. (Proc. Acad. Nat. Sci., vi. 48) will re- 

 commend itself on the ground of priority. 



MICRORHAGUS Esch. 



M. rufiolus, fusco-ferrugineus, helvo-pubescens, capite fortiter, tho- 

 raceque sat dense punctatis, hoc latitudine paulo breviore, lateribus rectis 

 parallelis, angulis posticis productis carinatis, ante basin breviter subcarinato ; 

 elytris a basi sensin attenuatis, apice rotundatis, punctatis, obsolete striatis ; 

 prothoracis margine superiore brevi anticeambiente, inferioread apicem paulo 

 abbreviata ; antennis elongatis, vix serratis, articulis 2 et 3 sequalibus, brevi- 

 bus, 4to conjunctis paulo longiore. Long. 5 mm. 



Ohio; several specimens were collected by Mr. H. S. Fay, one of which was 

 kindly given me by M Ulke. The small size of the third antennal joint, 

 which is scarcely long than the second, readily distinguishes this species 

 from those previously > scribed. The upper marginal line of the thorax is 

 very short, the lower oi extends from the base almost to the tip : the hind 

 angles are strongly carii. te, and the carinas are straight. 



M. pectinatus, Laearis, vix cuneiformis, piceus, helvo-pubescens, 

 capite confertim punctato, subcanaliculato, thorace latitudine breviore, antror- 

 sum subangustato, lateribus perparum rotundatis, linea marginali superiore 

 integra, angulis posticis deplanatis, disco sat dense profunde punctato ; ely- 

 tris profunde punctatis, vix obsolete striatis ; antennis rufo-piceis, pedibus 

 pallidioribus. Long. 4 mm. 



Mas antennis pube erecta villosis, articulis 3 10 apice ramo cylindrico 

 munitis. 



York Co., Pennsylvania ; kindly given me by Prof. L. Agassiz. This spe- 

 cies, by the entire upper marginal line of the thorax, and the pectinate an- 

 tennae, differs from all the other native species known to me ; in these charac- 

 ters it resembles M. pygmseus of Europe, but on comparison the sculpture 

 of the prothorax appears quite different ; in the latter the punctures are large 

 and shallow, while in M. pectinatus they are smaller and deep. 



HYP0C03LUS Esch. 



H. terminalis, elongatus, ater opacus, confertissime punctatus, sub- 

 tiliter helvo-pubescens, capite dense punctato subtiliter carinato, thorace 

 latitudine vix breviore, a basi antrorsum paulo angustato, lateribus ante 

 medium paulo rotundatis, dorso postice subcanaliculato, angulis posticis 

 acutis, obsolete bicarinatis ; elytris confertim rugose punctatis, substriatis ; 

 antennis pedibusque rufo-piceis, illis articulo ultimo prsecedentibus duobus 

 longiore. Long. 4 mm. 



Ottawa, Canada ; Mr. Billings. This little species resembles in size and 



1866.] 



