

360 [June, 



another behind the posterior elevation of the fourth interstice, causing the elytra 

 to appear somewhat gibbous. 



6. H. excavatus, elongatus argenteo-niger, capites thoraceque sat dense 

 punctatis, hoc latitudine vix longiore, postice niagis angustato, lateribus baud 

 sinuatis crenulatis, disco o-foveato, foveisque basalibus duabus parvis, elytris 

 profunde crenato-striatis, interstitiis angustis, 4, 5 et 7 postice suturaque subele- 

 vatis (4to interrupro), pedibus rufis. Long. -13. 



One specimen from Louisiana was given me by Dr. Schaum. This species is 

 closely related to the preceding, but tbe color is darker, and the inequalities of 

 the elytra are much less apparent, the fifth interstice is elevated about the middle 

 and interrupted; adjacent to the interruption the fourth and seventh are slightly 

 elevated : the 8th insterstice is slightly foveate at the middle, and there is a faint 

 impression behind the humerus. / 



, 7. H. rufipes, elongatus, griseo-ar-genteus, capite thoraceque sat dense 

 punctatis, hoc latitudine haud longiore, postice subangustato, lateribus haud 

 sinuatis crenulatis, disco 5-foveato, foveis duabus basalibus parvis, elytris crenato- 

 striatis, interstitiis striis latioribus, pluribus subelevatis etinterruptis, purpureo- 

 variegatis, pedibus rufis. Long. -13. 



Melsheimer, Proc. Acad. Nat. Sc. 2, 100. 



Middle and Southern States. Closely related to the preceding, but distinguished 

 by the thorax being less narrowed behind, and the interstices of the elytra being 

 distinctly wider than the stria?. Dr. Melsheiraer's description reads, " elytra 

 strongly crenate striate, interstices fine, elevated, second, third and fourth lines 

 with interruptions at the middle." In comparison with other species these 

 characters are liable to produce error, and I therefore subjoin a new description. 



Elytra wider than the thorax, strongly crenate striate, with the interstices 

 convex but distinctly wider than the striae ; the suture is slightly elevated, the 

 fifth elevated posteriorly and interrupted, adjacent to the interruption the fourth 

 is elevated, the outer ones are also slightly undulated and elevated about the 

 middle: on the third interstice are three small purple spots, and the interrupted 

 portion of the sixth is also purple. 



8. H. foveatus, elongatus, griseo-argenteus, tborace vage punctato latitu- 

 dine paulo longiore, postice vix angustato, lateribus fere rectis, dorso foveis 5 

 maximis profundis excavato, foveisque duabus basalibus parvis, elytris punctis 

 grossis-crenatis, postice callosis, sutura interstitiisque alternis elevatis, 3 et 5 

 postice interrupts, 4to postice elevato, pedibus testaceis, genubus obscuris. 

 Long. -14. 



Haldeman, Stansbury's Exped. to Great Salt Lake, 375. 



Fort Gates, Texas; for the typical specimen collected by Lieut. Haldeman, I am 

 indebted to his brother, Prof. S. S. Haldeman. The dorsal foveas of the thorax 

 are larger and the external basal fovea? much smaller than in the next species 

 to which this related, and the elevations of the elytra are much more distinct. 

 They are slightly mottled with dark gray; the punctures are very large, and not 

 closely placed ; the interstices are scarcely wider than the stria? : the suture, 

 3d, 5th, 7th and 9th interstices are more elevated, the 3d and 5th are interrupted 

 behind the middle; the posterior part of the 3d is similar in elevation to the 

 anterior part and extends to the tip, but the fifth rises into a somewhat abrupt 

 callus ; the fourth interstice adjacent to the interruption is slightly elevated. 



Mr. Haldeman has incaatiously stated that this species is allied to H. 

 scabratns, but its form is quite different, and an attentive examination shows 

 but little affinity between them. 



9. H. variolatus, griseo-argenteus, elongatus, thorace ina?qualiter rude 

 punctato, latitudine paulo longiore, postice paulo angustato, lateribus crenulatis 

 subsinuatis, dorso foveis 5 magnis, alterisque basalibus duabus profundi?, elytris 

 valde crenato-striatis, interstitiis striis fere angustioribus 5to pone medium sub- 

 calloso, maculis pluribus parvis purpureis ornatis, pedibus testaceis, genubus 

 iemoribusque basi obscuris. Long. -11. 



