May, 1846.] 57 



taceous; elytra dull testaceous, indeterminately black at apex and lateral 

 margins; beneath dusky ; feet as in the type, Sallomenus plagiatus, Melsh. MS. 



Kallomencs, Payk. 



1. H. scapularis. Fuscous; antenna?, feet and humeri testaceous. 1^ 1. long. 

 Pennsylvania. 



Hallomenus humeralis, Melsh. Catal, 



Oblong-ovate, dark dull reddish-brown, pubescent, finely and densely 

 wrinkled; bead finely and con fertly punctured, with the eyes deep black, lunate; 

 antenna?, palpi and feet testaceous ; mouth piceons : thorax each side of the 

 middle at base with a small fovea: elytra with the anterior exterior angles 

 rufo-testaceous : pectus as above: abdomen palish brown. 



2. H. ? quadripustulata. Blackish; elytra with four testaceous spots, lj 1. 

 long. Pennsylvania. 



Elliptic, blackish, pubescent, densely and obviously shagreened or wrinkled, 

 somewhat glossy: head punctulate ; eyes transverse, black; antennae short; 

 testaceous, with the apical half black and arcuated; second and third joints 

 subequal, palpi testaceous, terminal joint of maxillary large; thorax tranverse, 

 widest in the middle, rounded at the sides, with the edges margined ; basal 

 edge subtruncate, with the hind angles acute; anterior edge truncate, with the 

 anterior angles deflexed ; an obsolete impression each side towards the hind 

 angles ; scutel, small, black : elytra with a large testaceous spot at base, and 

 a rather transverse-oval similarly colored one midway the apex and middle: 

 feet pale brown, or testaceous, the femora sometimes piceous. The antennae, 

 which are somewhat thickened towards the apex, and the thorax in its outlines, 

 differ greatly from those of the preceding species, which is a true llallomenus. 

 It might perhaps be placed more correctly in the genus Xilita. 



Orchesia, Latr. 



1. 0. sericea. Testaceous; eyes black. 2 1. long. Pennsylvania. 

 Rufo-testaceous, yellowish sericeo-pubescent, densely and finely rugose - 



punctured : beneath rather glabrous, and deeper colored. Perhaps identical 

 with micans, Illig., or only a local variety of that species. 



2. 0. castanea. Fuscous; antennae, palpi and feet rufous. 1\ 1. long; | 1. 

 wide. Pennsylvania. 



Hallomenus castaneus, Melsh. Catal. 



Slender, brown, yellowish-sericeous, densely shagreened : head, dull, dark 

 rufous, with the labrum, palpi, feet and antennae, rufous; eyes black: thorax 

 with the two basal foveas distinct: abdomen color of the feet: pectus darker, 

 in a certain light blackish. 



3. 0. gracilis. Fuscous; eyes plumbeous. 2 1. long; 1. wide. Pennsylvania. 

 Hallomenus gracilis, Melsh. Catal. 



.Slender, brown, pubescent, densely and finely shagreened : head as in the 

 preceding; eyes lead color; antennas, palpi, feet and beneath, as in the 

 preceding species : thorax, with the basal foveas somewhat obsolete. Closely 

 allied to the preceding species, but it is always smaller, comparatively more 

 slender, and with a coarser vesture. 



9 



