40 fFEBRUARY, 



at the anterior angles, between the upper and under surface of the prothorax, and 

 open laterally. Only two species are known to me, 1. C. american^is 

 {Trlbalus ameriea /IU.S L,ec.) and 2. C. 1 ae v i s s i m u s, with the upper surface 

 very smooth and shining, the epipleurce less suddenly inliexed than in C. ameri- 

 canus, with only two very fine lateral strice ; the dorsal striae of the elytra ob- 

 solete: length -10. It is found in Cuba under the bark of trees, and was sent by 

 Don Felipe Poey. The body is narrower and more elevated than the preceding. 



Saprinus Leach. 



The posterior tibioe of this genus are usually but little dilated; the external 

 margin is furnished with three series of spines; some of the species of group 

 9, have four confused series (S. palmatus), others have the spines very dense 

 and occupying a large surface (S. sulcifrons). On account of these variations I 

 am inclined to unite Pachylopus (Er.) with this genus, although the singular 

 sexual character mentioned by Erichson is not found in any Saprinus. At all 

 events, if Erichson's species should remain as a distinct genus, it must be upon 

 very distinct characters from those indicated by him. 



The species known to me may be arranged as follows : 



A. Caput antice non marginatum ; prosternum compressum, elevatum, pla- 

 num ; epipleuraB tristriatae. 



Prosternum striis utrinque divergentibus. . . . , . .1. 



Prosternum striis antice conjunctis, postice parallelis. . . . .2. 



B. Caput antice non marginatum; epipleurae bistriatae. 



Prosternum transverse convexum, striis nullis 3. 



Prosternum transverse convexum, antice utrinque foveatum, striis parallelis, 



antice abbreviatis 4. 



Prosternum transverse convexum, non foveatum, striis antice divergentibus 5. 

 Prosternum transverse convexum, antice utrinque foveatum, striis remotis 



divergentibus . . . . . . . . . .6. 



Prosternum compresso-carinatum, striis remotis divergentibus . . .7. 



C. Caput antice marginatum, prosternum striis valde approximatis, postice 

 divergentibus, antice non divergentibus. 



Prosternum compressum, striis integris, antice convergentibus . . .8. 

 Prosternum compresso-carinatum, striis conniventibus, saspius indistinctis 9. 

 The United States species may be distributed as follows : 



1, Contains two Californian species : S. alienus Lee. ; discoidalis Lee. ; the 

 latter approximates somewhat to division C ; and in some specimens there is a 

 very faint trace of the double line found on the front of the species belonging 

 to that division. 



2, S. deletus Lee; interceptus Lee. 



3, S. interstialis Lee. ; a singular oblong species, with the striae of the elytra 

 nearly parallel. 



4, S. obscurus Lee. ; pectoralis Lee. ; paeminosus Lee. ; all from California. 



5, S. lugens Er. {californicus Man.) ; Oregonensis Lee. ; imperfectus Lee. ; 

 impressus Lee. ; infaustus {jpiceus^ Lee.) ; pensylvanicus Er. ; and three new 

 species. 



6, S. conformis Lee.; assimilis Er. ; minutus Lee.; placidus Er.; insertus 

 Lee. ; obductus Lee. ; ciliatus Lee. ; vinctus Lee. ; laridus Lee. ; scissus Lee. ; 

 and one new species. 



7, S. vestitus Lee; fimbriatus Lee; plenus Lee; vitiosus Lee; lubricus 

 Lee; ccerulescens Lee; all from California; and three new species, two of 

 which are from Missouri Territory, and the other from Georgia. 



8, S. sphaeroides Lee (/^-t'o-e^ier Lee) ; fraternus Lee ; mancus Lee (Jlister 

 mancus Say) ; estriatus Lee ; bigemmeus Lee ; and one new species. 



9, Contains species found near the sea shore ; they may be arranged in two 

 groups, according to the structure of the posterior tibiae. 



Those with the spines in three series are: S. patruelis Lee; lucidulus Lee 



Those with the spines more numerous and confused are : S. dimidiatipennis Lee 



(var. Ilister falmatas Say) ; sulcifrons Man. ; serrulatus Lee ; and gaudens Lee. ; 



