CRYPTOCEPHALINARUM BOREALI-AMERICAE DIAGNOSES. 263 



68. P. OTHONUS Saij. Am. ent. pi. 29. Niger ; capite punctato; labro, macnlis 1 

 frontali, 1 infra oculum, et 2 frontalibusj^aw/s; antennis fuscis basi rufulis : pronoto 

 confluenter punctato; marginibus lineolaque apicali Jlavis : elytris punctato-.striatis ; 

 punctis, sutura, vittisque 2 latis nigris : pygidio flavo : pedibus dilute rufis, flavo- 

 variegatis. Long. 2 lin. 



Distinguished from P. viduatus by the rugose pronotum, the want of the macula at 

 the base ; and by the deeper elytral striae. 



69. This seems to be the place for C. marginaticollis Randall. 1838. Bost. 

 J. n. h. 2,46. It is compared with C. lituratus, and must be allied to oihonus, 

 although the size given (probably an error) is only " one-twentieth of an inch." It is 

 stated to be found upon hickory, (Carya.) 



F—b. 



70. P. ABDOMiNALis Say. J. acad. 3,437. — pectoralis Mels. Pr. ac. 3,171. 

 Niger, supra griseo-flavescens, punctis impressis decoloratis : capite flavesceute, 

 sparse punctato, ferrugineo-variegato ; antennis fuscis, basi pallidioribus : pronoto 

 punctulato, ferrugineo-variegato : elytris flavis, punctato-striatis, striis decoloratis : 

 pygidio flavo, maculis 3 nigris vel obscuris ; abdominis marginibus flavis : pedibus 

 rufescentibus, femoribus basi apice flavis. Long. 1^ lin. 



Apex of the venter foveolate. 



The ferruginous discoloration varies considerably in extent and intensity, and 

 sometimes extends to the elytra. Upper Mississippi river and Lake Superior. 



G. 



71. P. MOLLIS Raid. Niger, punctatus : capite pedibusque flavis : pronoto flavo, 

 maculis 3 nigris : elytris seriatim punctatis, fascia subbasali apiceque flavis : abdomine 

 flavo-marginato. Long. \\ lin. 



Apex of the venter foveolate. 



Head flavous, punctulate, vertex and a frontal spot obscure rufous ; antennae and 

 trophi flavous : pronotum punctulate, flavous, a large cordate dorsal macula, with a 

 smaller one on each side black ; pectus punctulate : scutel flavous : elytra with the 

 apex and hdise Jlavous, except a humeral spot, the region of the scutel, and the suture, 

 which are black, the last confluent with a wide subapical black fascia : pygidium, 

 margin of the venter, and feet Jlavous ; middle of the femora discolored. Missouri 

 Territory. 



M0NACHUS4.CAeyr. 



72. M. SAFONATUS F. (Crypt.) 2,55. Cyaneus, nitidus, impunctatus : labro et 

 antennarum articulis 1° — 4° flavis: elytris seriatim punctatis, punctis minutis, postice 

 obsoletis : pygidio disperse punctato. Long. 1 lin. 



67 



