NATURAL SCIENCES OF PHILADELPHIA. 
71 
equal in length, but the 3rd and 5th are a little shorter ; the 6th is deeply 
cleft, very small, and only visible within the emargination of the fifth. 
S. 1 a e t n s , oblongns, viridiseneus, subtiliter albo-pubescens, capite, tho- 
raceqne confertissime scabro-punctatis, hoc convexo canaliculato, latitudine 
duplo breviore, antrorsum angustato, lateribus late rotundatis et late praecipue 
postice subdepressis, elytris Isete sanguineo-rufis, confertim minus subtiliter 
rugose punctatis, et subtilius parce punctatis, sutura viridiaenea ; tibiis tar- 
sisque testaceis, antennis fuscis ad basin testaceis, articulo Imo viridiaeneo. 
Long. '55. 
Chauliognatiius Hentz. 
C. profundus, fulvus tenuiter pubescens, opacus, capite nigro, thoracero- 
tundato, subtransverso, disco insequali margine laterali late et valde reflexo, 
ad apicem paulo concave, ad basin tenuiter marginato, punctis dorso tribus 
nigris notato : elytris pone medium ad apicem nigris, ano nigro, abdomine 
postice supra et subtus biseriatim nigro maculate ; antennis nigris extrorsum 
testaceis, pedibus nigris, femoribus dimidio basali fulvis. Long. -65. 
One specimen, Sonera, Mr. Schott. The three black spots of the thorax are 
in a transverse line behind the middle. The black of the elytra occupies about 
two-fifths of the surface. 
C. limbicollis, nigro pubescens opacus, thorace transverse, subquadrato, 
angulis valde rotundatis, planiusculo, margine omni sequaliter anguste reflexo 
flavo, elytris flavis macula communi triangulari basali, apiceque late nigjis, 
abdomine flavo, ano nigricante, tibiis tarsisque anticis piceo-testaceis. Long. 
•47. 
One specimen, Sonera, Mr. Schott. At first sight resembles C. scutellaris, 
but is very difl"erent. The posterior spot of the elytra covers more than one- 
third the surface. 
Dasytes Fabr. 
D. rufipennis, elongato-oblongus, niger punctatus, cinereo-pubescens, 
thorace transverse lateribus rotundatis baud serratis, elytris densius punctatis 
rufis, pedibus rufis, tibiis anticis extrorsum spinulosis, unguiculis omnibus 
valde appendiculatis ; antennis nigris, articulis a 5to sensim maioribus trian- 
gularibus. Long. -24. 
One specimen found in Sonora by Mr. Schott. 
Cymatodera Gray. 
C. morosa, piceo-nigra nitida, pubescens, capite thoraceque confertim 
punctatis, hoc latitudine sesqui longiore, antice paulo, postice magis constricto, 
ad medium parum haud subito dilatato, lateribus inde late bisinuatis, elytris 
thorace sesqui latioribus, planiusculis, subparallelis, humeris prominulis, 
punctis quadratis striatis, striis prsecipue internis postice obliteratis, ad apicem 
dense subtiliter punctulatis ; antennis elongatis subserratis articulo ultimo vix 
longiore. Long. '53. 
Sonora, Mr. Schott, one specimen. Quite distinct from all the other species 
known to me by the characters above given, but yet more nearly allied to C. 
i n o r n a t a than to any other. 
C. usta, piceo-ferruginea, pubescens, nitida, capite thoraceque subtiliter 
punctulatis, hoc latitudine fere sesqui longiore, antice vix, postice vero pro- 
funde constricto, lateribus medio rotundatim paulo dilatatis, elytris thorace 
l)lus sesqui latioribus, oblongis dorso planiusculis, punctis mediocribus striatis, 
postice sensim minoribus, et ante apicem obliteratis, interstitiis omnino planis, 
parce subtiliter punctulatis, antennis subserratis, articulo ultimo paulo lon- 
giore acuminate. Long. '38. 
Dr. Berlandiere's Collection, one specimen. This species is also sufficiently 
distinct from all others in my cabinet, and probably from any of those de- 
1858.] 
