300 [April, 



3. C. dentigera elongata, parum convexa picea, parce cinereo-pubescens, 

 thorace rotuudato-cordato, lateribus subtilius serratis^ coafertim punctato ad 

 basin fovea rotundata transversim obsolete expansa impresso, elytris elongato- 

 oblongis thorace sesqui latioribus, seriatim punctatis interstitiis uniseriatim 

 subtiliter punctulatis antennarum basi pedibusque obscure testaceis. Long. '08. 



Lake Superior : behind each eye there is a slight but more distinct and sub- 

 acute tootu, from which proceeds a rigid recurved bristle. 



4. C. prionodera, elongata, parum convexa, testacea parce cinereo- 

 pubesceus, thorace rotundato-cordato, dense punctato, lateribus minus subtiliter 

 serratis, ad basin obsolete foveato, elytris oblongis, thorace paulo latioribus, dis- 

 tinctius seriatim rugose-punctatis, interstitiis uniseriatim punctulatis. Long. 

 07. 



One specimen found at San Jose, California, Related to the two preceding 

 species, bnt the punctures of the elytra are larger and somewhat connected by 

 transverse r, gae. The lateral teeth of the thorax are more conspicuous, and the 

 basal fovea is faint: the head is about equal in width to the thorax, and has 

 behind each eye a scarcely distinct obtuse tooth. 



5. C. rugulosa, elongata parum convexa picea, parce breviter cinereo- 

 pubescens, thorace subquadrato, latitudine vix breviore, lateribus et basi late 

 rotuodato, confertim punctulato, ad basin vage foveato, angulis posticis obtusis, 

 elytris thorace haud sesqui latioribus oblongo-ovalibus,tenuiier seriatim punctatis 

 interstitiis transversim rugosis punctulatis, pedibus antennisque flavis, his clava 

 fusca. Long. -05. 



Lake Superior: the sides of the thorax are smooth anteriorly, but have a few 

 email teeth near the posterior angles, which though obtuse are quite distinct. 

 It is distinguished from the next principally by the thorax being very little 

 broader than its length: the thorax varies in color becoming sometimes almost 

 rufous. 



6. C. K irby i, picea vel testacea, subelongata parum convexa, breviter cinereo- 

 pubescens, thorace latitudine fere sesqui breviore, subquadrato lateribus serratis 

 parum rotundato, angulis posticis obtusis prominulis, basi late rotundata, con- 

 fertim subtiliter punctato ad basin vage foveato ; elytris oblongo-ovalibus, thorace 

 haud sesqui latioribus, seriatim punctatis, interstitiis punc'.ulatis transversim 

 subrugosis; antennis pedibusque fiavo-testaceis. Long. -04 -06. 



Corlicaria dentieulnta\\ Kirhy, Fauna Bor. Am. 110. 



Lake Superior, very abundaut: the serrations of the thorax are less conspicu- 

 ous towards the anterior angles. I do not feel certain that the former species 

 should be separated from this: I can find no difference except the relative pro- 

 portions of the thorax, and as both are found in one locality and mingled to- 

 gether, it is quite possible that they are really different sexes of one species; in 

 which case the name appended to the present description must for obvious 

 reasons be retained. 



1. C. obtusa, picea, parurn convexa, breviter pubeseens, thorace latitudine 

 fere sesqui breviore subquadrato, lateribus subtili-sime serrulatis rotundatis, 

 basi late rotundata, angulis posticis obtusis, confertim punctulato, ad basin 

 arcuatim impresso elytris thorace haud sesqui latioribus oblongo-ovalibus, seria- 

 tim punctatis, interstitiis punctulatis transversim rugosis ; antennis pedibus- 

 que testaceis. Long. -05 -06. 



One specimen found at New York and another at Cambridge, Massachusetts ; 

 resembles in form the preceding, but is a little broader, and is readily known by 

 the form and sculpture of the thorax. 



8. 0. longipennis, elongata, cinereo-pubescens, testacea, thorace latitu- 

 dine sesqui breviore lateribus antice rotundatis, basi late rotundata utrinque 

 sinuata, angulis posticis prominulis, parce punctulato, ad basin fovea parva 

 transversa impresso ; elytris elongatis, oblongis, thorace paulo la'ioribus postice 

 convexis ad apicem late truncatis, punctis quadratis approximatis striatis, inter- 

 stitiis parum convexis seriatim breviter pilosis. Long. -05. 



