184 
PROCEEDINGS OP THE ACADEMY OP 
Laredo to Ringgold Barracks, Messrs. Schott and Weise. Closely related to 
E. sulcata, but differs by the more convex elytra being hardly sulcate, and 
by the thorax being less convex. The elytra of the male are a little narrovc^er 
than those of the female, and the anterior femora are armed vrith a long acute 
tooth ; in the female the tooth is short and obtuse. The prosternum is com- 
pressed and perpendicular at the posterior extremity. The abdomen is sparsely 
punctured and rugous. 
E. gracilis, ovata, longiuscula, atra nitida, capite parce distincte punc- 
tato, thorace subtiliter parce punctulato, rotundato-quadrato, modice convexo, 
latitudine parum brevoii-e, lateribus rotundatis postice subsinuatis, ad basin 
late rotundato, angulis posticis obtusis, anticis acutis plus minus ve acuminatis, 
elytris ovalibus postice declivibus acutis, thorace (maris vix sesqui, feminse plus 
sesqui) latioribus, dorso parum lateribus magis convexis vix sulcatis punctato- 
striatis, interstitiis punctis perpaucis notatis ; femoribus anticis sexusutriusque 
dente longo armatis. Long. -8— -95. 
Sonora, Messrs. Webb and Schott. New Mexico, Dr. Henry. More slender 
than the preceding, with a comparatively smaller thorax ; the prosternum is not 
perpendicular but rounded at tip. The abdomen as in the preceding has only 
a few fine punctures, but they are still less distinct. 
E. s p o n s a, subovata, nigra, thorace paulo convexo, subrotundata, latitu- 
dine parum breviore, parce punctato antice late emarginato, angulis subacumi- 
natis, lateribus rotundatis tenuiter marginatis ad basin late subrotundato, 
angulis posticis subrectis, elytris thorace fere duplo latioribus ovalibus postice 
declivibus, et obtuse acuminatis, punctato-striatis, versus latera et apicem 
muricatis, interstitiis punctis sparsis uniseriatim notatis : femoribus anticis 
obtuse dentatis. Long. -8 — -88. 
Mas elytris thorace sesqui latioribus, modice convexis. 
Femina elytris thorace duplo latioribus dorso planiusculis. 
New Mexico, Mr. Fendler. By the form of the thorax, and the anterior tarsi 
belongs to the present division, though the sculpture of the elytra recals E. 
d e 1 e t a of division 1. The tooth of the anterior femora is obtuse in one male 
and two females, but moderately acute in another male and female. A speci- 
men collected in New Mexico by Dr. Henry has the elytra not at all muricate 
and the tooth of the anterior thighs acute. 
V. 
E. caudifera, ovata, nigra, thorace vix convexo, parce punctato, ad latera 
paulo concavo et transversim rugoso, latitudine breviore, antice late emar- 
ginato, angulis anticis baud acuminatis, lateribus valde rotundatis, postice 
angustato, angulis posticis obtusis : elytris thorace sesqui latioribus, ovalibus 
dorso planiusculis, punctis seriatis substriatis, interstitiis uniseriatim parce 
punctatis, ad latera et apicem muricatis, postice oblique declivibus et pro- 
longatis, femoribus anticis muticis. Long. '90. 
Mas Cauda elytrorum trientem aquante, angusta. 
Femina, cauda elytrorum brevi lata, obtusa. 
New Mexico, Mr. Fendler ; Creek Boundary, Dr. Woodhouse. 
VIL 
E. fusiformis, nigra, utrinque angustata, fusiformis, thorace latitudine 
hand breviore, trapezoideo, antrorsum modice angustato, angulis posticis cum 
basi rotundatis anticis acutis, dorso parce subtiliter punctato, elytris basi 
emarginatis thoraci arete applicatis, elongatis pone medium sensim angustatis 
ad apicem subacutis, humeris antrorsum productis, sat dense subseriatim 
punctatis ; antennis ad apicem parum incrassatis, femoribus muticis, prosterno 
pone coxas anticas compresso, producto. Long. '5 ; lat. '23. 
Platte River valley, near Fort Laramb, rare. This species is remarkably 
distinguished from all the others by the fusiform shape, by the thorax being 
wider at base than tip, and by the elytra being moderately deeply emarginate 
[Oct- 
