NATURAL SCIENCES OF PHILADELPHIA. 381 



Fort Whipple, Arizona, Dr. E. Coues, U. S. A. This species resembles, in 

 size and color, C. cyanellus Lee, but is more oval in form, and differs 

 by the surface being free from punctures, and by the form of the clypeus, 

 which in C. cyanellus is four-toothed, with the margin scarcely refiexed, 

 while in the present species it is formed as in C. lsevis. The eyes are 

 narrow ; the margin of the thorax is scarcely interrupted on the under sur- 

 face near the anterior angles, the tubercle seen in most species being nearly 

 effaced, though not absolutely wanting, as in C. cyanellus, simplex 

 and some otliers. 



C. puncticollis, rotundato-ovatus, antice convexus, ater opacus, sub- 

 tiliter reticulatus, clypeo obtuse 6-denlato, margine reflexo, capite parce punc- 

 tato, antice rugoso, thorace parce et profunde, licet baud fortiter punctato, 

 lateribus medio angulatis ; elytris depressis, striis distinctis, interstitiis granu- 

 lis vix elevatis parcis obsitis. Long. U 7 mm. 



Two specimens, Cape San Lucas, Lower California, Mr. Xantus. This spe- 

 cies has the appearance of small specimens ofC. praticola Lee, and, like 

 it, has the eyes narrow, and the margin of the prothorax interrupted on the 

 under surface by a well marked tubercle, 'but differs from it as from all the 

 other species in my collection, having the last mentioned character, by the dis- 

 tinct punctulation of the head and thorax. The color is a dull black, as in 

 C. praticola; each elytron is slightly bituberculate at the base near the 

 scutellum in both specimens, but more distinctly so in the larger. 



COPRIS Geoffroy. 



C. remotus, cylindrico-ovalis, niger nitidus, capite punctato, clypeo 

 semicirculari, antice remote obtuse bidenticulato, thorace canaliculato irregu- 

 lariter puuetato ; elytris interstitiis con vexis kevibus, striis subtilibus punc- 

 tatis. Long. 14 mm. 



Mas capite cornu cylindrico erecto frontali, thorace tuberculis quatuor 

 magnis externis compressis, intermediis conicis ; fovea magna utrinque 

 versus latera, plicaque brevi armato. Femina latet. 



Texas, near the Rio Grande, two specimens. This species resembles, in the 

 armature of the head and thorax, C. moechus and C. anaglypticus, 

 but differs essentially from them by the clypeus being not incised at the tip, 

 but armed with two distant small obtuse teeth ; the punctures of the thorax 

 are larger and unequally distributed, the greater portion of the surface being 

 smooth; the medial tubecles are distant, and not united ; the intervals 

 between the striae are smooth and convex, the strife themselves very fine, and 

 marked each with a row of punctures extending transversely. 



GEOTRUPES Latr. 



I have mentioned in the List, under the MS. name G. retnsns McLeay, 

 a remarkable species found, in the Southern States, underdecomposing fungi. 

 It is not described in the monograph of Geotrupes by Mr. Jekel,* and, in 

 fact, constitutes a group distinct from any of those characterized by him. 



The elytra are broadly ovate, very convex, connate and destitute of strise ; 

 the clypeus is semicircular, with the lobes before the eyes large and rounded ; 

 the front in the r^ is armed with a shorthorn or acute tubercle, whicli in the 

 9 is reduced to a feeble elevation ; the prothorax of the $ is flattened and 

 declivous before the middle, and longitudinally broadly excavated, thus pro- 

 ducing a transverse somewhat lunate elevation about the middle ; in the 

 female a slight dorsal channel is seen, and a feebly-impressed fovea each side, 

 half way between the middle and the lateral fovea. The apical tooth of the 

 anterior tibia? of the ^ is broadly emarginate at tip, and prolonged inwards 

 into a slender acute process. The middle tarsi of tf are slightly larger than 



*Annales de la Soc. Enormlogique de France, 1855, p. 513. 



1866.] 



