170 [Feb., 1847. 



Brown-brassy, shining : head finely punctured, with an obvious frontal in- 

 dentation, anterior to which is a transverse arcuated impressed l>ne : an- 

 tennae, eyes, labrum and palpi, as in the preceding species : thorax com- 

 paratively large, as wide in the middle as the elytra, contracted and trun- 

 cate behind, in front rounded and advanced in the middle; sides rounded ; 

 minutely punctured and rugulose : scutellum rugulose : elytra short, with 

 the sides feebly arcuated ; rugulose, with obsolete series of punctures, which 

 are much effaced towards the apex, the latter rounded : beneath and feet 

 dark-brassy, rugose-punctured. Allied to the preceding species. 



Cryptocephalus, Geoffr. 



1. C. M. Nigrum. Black; thorax and elytra testaceous, the former with 

 a 'black character like the letter M, the latter with an irregular vitta and 

 several spots, black, 1 1. long. Pennsylvania. 



Pachybrachis ~M. Nigrum ? Dej. Catal. 



StroDgly punctured : head black, with the orbits of the eyes and a spot 

 on the clypeus, testaceons ; labrum pale, or piceous ; antennae blackish, 

 with four basal joints testaceous : thorax less strongly punctured than the 

 elytra, testaceous, with a black character, formed like the letter M ; edges 

 black : scutellum testaceous, with the lateral margins black : elytra strongly 

 and irregularly punctured, some of the punctures are arranged in irregular 

 series ; testaceous, with an irregular, black vitta, abbreviated before the 

 apex ; lateral submargins each with three black spots, of which the ante- 

 rior one is placed on the humerus, the posterior one is confluent with the 

 vitta: beneath deep black; pygidium black, each side with a pale spot : 

 feet blackish, with the femora and tibiae varied with white. This species 

 may prove to be a variety of the viduatus, Fabr. 



2. C. atomarius. Dark fuscous, speckled with whitish ; face white ; femora 

 varied with white. \\ 1. long. Pennsylvania. 



Cryptocephalus historio, Melsh. Catal. 

 ' : atomarius, Melsh. MS. 



Black, or dark-brown: head punctulate ; face white, with the sutures 

 black ; antennas fuscous, with three or four basal joints lurid : thorax densely 

 punctulate, varied with a few dull testaceous spots ; anterior edge and an 

 apical medial line similarly colored: scutellum black, with a testaceous 

 spot : elytra irregularly and profoundly punctured, punctures ranged in 

 irregular series ; varied with numerous small lurid spots ; pygidium imma- 

 culate : beneath black : feet black, varied with white. 



Var. a. Black ; head almost immaculate; labrum and a double spot in 

 front of the antennae, white ; thorax almost immaculate ; elytra with only 

 a few small lurid spots ; femora at tip whitish. Cryptocephalus conspersus, 

 Melsh. Catal. This is probably the female of the preceding species. 



3. C. trinotatus. Deep black ; thorax with the lateral and anterior margins 

 and three spots, sanguineous ; front with two similarly colored spots. 

 lij 2 1. long. Pennsy.runia. 



Cryptocephalus trinotatus, Melsh. Catal. 



Deep black : head densely punctulate, with two reddish-fulvous spots be- 

 tween the eyes; antennae and labrum, black : thorax confluently punctured, 

 with the anterior edge, lateral margins, two oblique, dilated, abbreviated lines 



