AMERICAN COLEOPTERA, 



311 



convex, coarsely irregularly punctured. Elytra as wide as the thorax, a little 

 longer than wide, sides moderately arcuate, apex rotundate truncate, sutural 

 angle slightly dentiform, disc convex with ten rows of vaguely impressed 

 punctures, the intervals very slightly convex, irregularly biseriately punctu- 

 late, each puncture with a short fulvous hair. Body beneath coarsely sparsely 

 punctured. Length .12— .16 inch ; 3— 4 mm. 



Mr. Reitter has described two species from our territory which are 

 .known to us as mere color varieties of helvolus. P. in/uscatus has 

 each elytron slightly darker at its middle. P. limbatus has the elytra 

 darker at the sides, breviusculus is a small form found in the Gulf 

 States. Through the kindness of Dr. Dohrn, I have seen the types 

 of these species and find the first merely a stained specimen, the 

 second a slight color variety. 



Occurs in Pennsylvania, Kansas and Georgia. 



P. dorsalis n. sp.— Broadly oval, subdepressed, black, shining, very 

 sparsely pubescent, elytra with a large basal space rufous. Head coarsely 

 sparsely punctured, front triangularly impressed. Antennse piceous. Thorax 

 more than twice as wide as long, narrowed in front, apex feebly emarginate, 

 base arcuate at middle vaguely sinuate each side, sides moderately arcuate, 

 margin distinctly but narrowly explanate, hind angles rectangular, disc moder- 

 ately convex, coarsely but sparsely punctured. Elytra very little longer than 

 wide, sides feebly arcuate, apices separately rounded, sutural angle not denti- 

 form, disc subdepressed, with ten rows of closely placed, but feebly impressed 

 quadrate punctures, intervals flat with a single series of fine punctures. Body 

 beneath black, shining, sparsely punctured. Length .16 inch ; 4 mm. 



This species is less convex than helvolus and slightly more elongate, 

 its sculpture is more distinct and regular and the pubescence less 

 marked. The discal rufous space of the elytra occupies the basal 

 two-thirds but does not attain the margin. 



Two specimens, California, sent me by Mr. Ulke. 



ORTHOPEPL.US n. g. 



Labrum bilobed, but feebly. Mandibles acute at tip. Mentum and 

 palpi as in Ep^traea. Antennas with an abrupt club, grooves broad, 

 badly defined, convergent. Prosternum at tip feebly conically pro- 

 tuberant. Mesosternum depressed not cariuate, middle coxoe narrowly 

 separated. Tibise feebly broader at tip. Tarsi of the middle and 

 posterior legs simple, the anterior dilated. Elytra truncate at tip. 

 Surface glabrous. 



The males have a distinct sexual segment. 



I cannot place the species on which the above genus is founded, 

 in any of the genera at present established. The form is that of the 

 more elongate Epuraese such as truncatella, parallel and moderately 

 convex. The thorax is nearly square and the head above concave. 



