OF IMIILADELPHIA. 289 



angles roundoJ : elytra abruptly truncate at tip, rather more thai) 

 two-thirds the length of the abdomen : feet rulous. 



Length less than one-tenth of an inch. 



The smallest species I have seen. 



[I have not identified the species : it is probably a Carpnphi- 

 fits. — Lkc] 



SCAPIIISOMA Leaeh. 



S. CONVEXA. — Highly polished, black; antenna;, mouth, feet, 

 and tail piceous. 



S('(ii>h!illum conic.rum Molsh. Catal. 



Body black, very highly polished; head piceous, paler before, 

 with a deeply impressed, transverse arcuated line between the 

 eyes : thorax with minute, rather distant puncture : elytra, punc- 

 tures, excepting towards the base, more obvious than those of 

 the [184] thorax; terminal and posterior lateral margin ob- 

 scurely piceous : feet, abdominal incisures and tail i)iceous. 



Length one-tenth of an inch. 



T received this species from Dr. J. F. Melshcimer, under the 

 'lenomination I have adopted. From all 1 can learn, it seems to 

 be very closely allied to the *S'. agarica of autliors, of which, in 

 fact, it may possibly prove to be a variety. 



CATOPS Fabr. 



L C. OPACLS. — Brownish-black, opaque; t<.^rminal and two 

 basal joints of the antennae rufous. 



Ptomophagus ojxtriis Melsh. Catal, 



Body sericeous, with minute hairs, which, in a particular light 

 arc pale ferruginous : antennae with the seventh joint largest, the 

 eighth smallest : elytra not striated, but with a subsutural im- 

 pressed line, and viry jiumcrous minute punctures, furnishing 

 minute hairs : feet blackish piceous. 



Length less than one-fifth of an inch. 



Occurs frequently in a species of If yd num. 



2. C. SIMPLEX. — Pale brownish, sericeous; terminal ami (ivc 

 basal joints of the antennae rufous. 



Inhabits Arkansa. 



Head dark ferruginous; antenuse dark ferruginous, the five 

 basal joints and terminal joint rufous; palpi and mandibles ferru- 

 1825.] 19 



