with Descriptions of New Species. 199 
a SPHÆRODERUS BILOBUS, ^" 
Of this species I have seen c one A n 
original from which Mr. Say drew up his : 1 esci 
and which was brought by. Mr. Nuttall from Mi 
The thorax very closely-approačhes, in form; to, tl hat of | | 
Cychrus margindtus, but it is as deeply fu urrowed i in the - 
i r ulàt which circum- 
stance give to it the dd pte F^ sugges 
its name. . >i 
Nore. At the timed 
to the Boston ty Natura History, the writer 
exhibited, to the members then pes of 
the following Nor e i ts. d 
— in it; E 
scribed for the Journal of the Acad of Natural 
Sciences of Philadelphia, and 4. C. marginatus, Esch- 
scholtz, all from Oregon ; 5. C. viduus, Déjean; 6.. C. 
Leonardii, T. C. Andrewsii, and 8. Sedphinctus heros, 
- the i ew species described in the present paper; 9. Sca- 
phingtu -elevádtus, F., 10. Spheróderus Lecóntei, Dé- 
jean, 11. S. stenóstomus, Weber, and 12. S. bilobus, Say. 
Detailed descriptions of the new species from Oregon 
have been in the hands of the publishing committee of 
the Philadelphia Journal more than nine months, and 
without. doubt ; are before this time’ published. It may 
yamiss to annex to the present article 
acters of these three Cychri, with a few 
"i 
