150 [Feb., 184 1 



obsolete) towards the apex ; margin subcupreous, with confused 

 ranges of smaller punctures ; legs steel blue ; anterior femora 

 with a very slight prominence in the female. 7 i 1. long. 3 1. 

 wide. 



Found by Mr. Joshua Child upon the Southern shore of Lake 

 Superior. The elytra agree with those in B. multipunctata, Fab. 

 and the thorax apparently with that of B. esehscholtzii. 



*Chorea. Body short, robust, and of a rather solid consistency; 

 head small, deflected ; maxillary palpi robust, prominent, last 

 joint largest, and triangular; antennae short, serrate, not sensibly 

 tapered, placed between the eyes and a little removed from them, 

 which renders them approximate; they are inserted upon each 

 side of a slight frontal elevation, and are borne parallel, arched 

 over the thorax and extending a little beyond the scutel. Protho- 

 rax short, transverse, inflated, anterior angles obtusely rounded, 

 posterior ones produced in a sharp angle. Scutel rounded. Ely- 

 tra elongate, texture solid, with wings beneath. Abdomen of five 

 inflated segments. Feet slender, the posterior coxae very long, be- 

 ing as long as the femur proper, which is much reduced in length, 

 although the limb is of ordinary length. Tarsi with short hair, but 

 scarcely pulvillate; penultinate articulation bilobed. Probably a 

 female. 



A single individual taken upon the porch of my residence. It 

 endeavored to liberate itself by a sharp click, which, with the shape 

 of the prothorax, led me to suppose it an Elater. The click was 

 produced by approximating the anterior femora along the breast and 

 separating them with a sudden jerk which could be heard and felt. 

 There is nothing apparent in the structure of the anterior feet to 

 indicate this peculiar use of them. 



Chorea pulsator. Dull black, minutely punctured, slightly 

 hairy; palpi bright testaceous : tarsi and tibiae dull rufuus ; prono- 

 tum covered with piliferous punctures, dorsal line not apparent ; 

 elytra with nine strise filled with large elongate punctures. 4 1. 

 long. Pennsylvania, in April. 



Eburia distincta. Flavescent, covered with a short whitish 

 pubescence; labrum fringed with fulvous hair; front imprest; 

 medial line of the head glabrous posteriorly ; prothorax subcy- 

 lindric, narrowed before, with an anterior and posterior transverse 

 impression ; sides armed with a short spine ; disk on each side, a 

 little before the middle, with a round black glabrous tubercle; 

 elytra with a basal and medial pair of approximate stigmata, the 

 former somewhat oblique, the latter with the interior one about 

 half the length of the exterior. 10 12 lines long. Georgia and 

 Mississippi. 



Distinguished from the more northern species E. 4-geminata Say, 

 distincta Dejean, by a more dense pubescence, less globular protho- 

 rax with its deeper lines and larger tubercles ; and the shorter in- 

 ternal posterior stigma. 



