NATURAL SCIENCES OP PHILADEEPHIA. 
187 
B. longicollis Lee, but the thorax is more rounded on the sides, more dis- 
tinctly punctulate, the rows of punctures of the elyta are much more evident, 
and the curvature from the back to the sides is abrupt, while in that species 
it is regular and uniform : the elytra are also more elongated near the apex, 
so as to produce at the inflexed margin a very slight concavity not seen in E. 
longicollis. 
E. gigantea has the thorax more convex, more rounded on the sides, and 
somewhat narrowed behind, and the elytra narrower, more gradually atten- 
uated and acute behind. 
E. gentilis, elongata, nigra, subnitida, thorace latitudine hand breviore, 
convexo, lateribus rotundato, postice paulo angustato, subtiliter parce punctu- 
late, elytris elongato-ovalibus postice declivibus et oblique attenuatis sequaliter 
transversim convexis, subtiliter parce vix seriatim punctulatis, prosterno mu- 
crone parvo acuto, femoribus muticis. Long. -75. 
San Diego, California. Closely' allied to E, gigantea, but very much 
smaller, with the thorax less rounded on the sides, and less narrowed at the 
base. 
XIX. 
E. scabricula, nigra, thorace opaco, transverse rotundato, dense con- 
iluenter scabro-punctato, versus latera late impresso, anguste marginato, ely- 
tris ovalibus, thorace parum latioribus, granulis reclinatis dense scabris, pos- 
tice declivibus et acutis, femoribus anticis obtuse dentatis. Long. '76. 
Sacramento, California, collected by Mr. J. Wittick, and given me by Mr. 
Rath von. This species is closely allied to E. m a r g i n a t a , but is much larger 
and much more roughly and densely punctured both above and beneath. The 
specimen is a female, and has the anterior thighs very obtusely toothed as in 
the male ofE. marginata. 
XX. 
E. V e s e y i , nigra, sat nitida, thorace latitudine fere sesqui breviore, paulo 
convexo, lateribus valde rotundatis postice breviter sinuatis, postice angustato, 
basi apice hand latiore, angulis posticis subrectis, dorso sat dense punctate, 
areolis duabus Isevibus, lateribus granulate, elytris planiusculis ad basin trun- 
catis, lateribus late rotundatis postice obtusis, dorso punctis magnis quadratis 
seriatis, interstitiis parce granulatis, versus latera et postice granulis reclinatis 
asperatis et transversim rugosis : prosterno postice truncate, femoribus anticis 
subsinuatis, antennis extrersum paulo incrassatis. Long. '70. 
Fort Tejen, California : collected by Mr. John Xantus de Vesey ; to whom I 
take great pleasure in dedicating the species, as a slight tribute of my appre- 
ciation of his enthusiastic labors, which have added much to our knowledge 
of the fauna of the Western Territories. 
Remarkable among the species of this group by the size, and by the attempt 
at striae of large punctures near the middle of the elytra. It is also distin- 
guished by the presternum being abruptly limited behind by a perpendicular 
line, while in all the ethers of the group the outline of the tip of the pres- 
ternum is rounded. 
E. constricta, nigra, subnitida, thorace latitudine sesqui breviore, la- 
teribus valde rotundatis, tenue marginatis, ante basin tubulatim censtricto, 
dorse cenfertim versus latera rugose punctate, elytris parum convexis lateri- 
bus magis rotundatis, liumeris paulo productis marginatis rotundatis, dorso 
crebre subseriatimpunctatis, postice etad latera granulis reclinatis scabris, an- 
tennis extrersum parum incrassatis. Long. '52. 
Sacramento, Mr. Wittick; given me by Mr. Rath von. Related to E. pro- 
duct a , but the base, though net narrower than the apex, is much more con- 
stricted than in that species, so that the sides become impressed. The elytra 
are broader, mere rounded on the sides, the humeri are less broadly produced, 
1858.] 
