NATURAL SCIENCES OF PHILADELPHIA. 363 



8. C. f o r m o s a Say. Chaudoir regards C. generosa Dej. and venusta Lee. 

 as being varieties of this species. 



9. C. rugifrons Dej. Besides the races indicated by me in the List, 

 Baron Chaudoir places as a variety of this species C. scutellaris. From 

 this view I must dissent, regarding the finely and densely rugous prothorax of 

 the latter as constituting an essential difference between the two. 



10. C. rectilatera Chattel., Bull. Mosc, 1843, 69.3, is the species found 

 in Texas which I erroneously considered as C. d e c o s t i g m a, and subse- 

 quently proposed to name C. t e x a n a (List, p. 1 ). 



11. C. purpurea Oliv. Chaudoir places C. splendida as a variety 

 of this species. 



12. I learn from Mr. Sall6, as well as from Baron Chaudoir's Catalogue, that 

 the species described by me, Tr. Am. Phil. Soc. xi. 62, as C. viatica Chew., 

 is different from that species. It may be called, from its locality, C. pime- 

 r i a n a. 



BLETHISA Bon. 



B. multipunctata Dej., Sp. Gen. ii. 266. A specimen which, on close 

 comparison with European specimens, shows no difference, was found at 

 Ottawa, C. W., and presented to me by Mr. B. Billings. Two others from the 

 neighborhood of Chicago are in the collection of Mr. Ulke. 



NEBRIA Latr. 



N. o bl i qu a, alata nigra, thorace longitudine duplo latiore postice angus- 

 tato, lateribus antice rotundatis, postice obliquis hand sinuatis, basi truncata, 

 angulis posticis obtusis baud rotundatis, canaliculate, antice profunde trans- 

 versim impresso ad basin fortiter impresso et parce punctato ; elytris oblongis, 

 thorace latioribus, striis subpunctatis, 3io puneto pone medium impresso : 

 autennis palpis tarsisque piceis. Long. 11 mm. 



Colorado. I have seen two specimens belonging to Dr. S. Lewis, one of 

 which he has generously placed in my collection. In form this species 

 resembles N. moesta, but the sides of the thorax are not sinuate near 

 the base, the hind angles, though well marked, are not rectangular but 

 obtuse, the elytra are less convex, and the third interval has but one im- 

 pressed puncture, which is on the third stria, about one-fourth from the tip. 



CYCHRUS Fabr. 



C. Guyotii, ameo-niger, thorace latitudine hand longiore, postice valde 

 angustato, lateribus anguste fortiter marginatis, disco rugoso postice punctato ; 

 elytris ovalibus convexis, anguste marginatis, dense crenato-striatis. Long. 

 27 mm. 



LeConte, List of the Coleoptera of North America, p. 58, (1st issue, 1863). 

 One specimen collected among the Black Mountains of North Carolina, was 

 given me by Prof. A Guyot. A remarkable species, resembling in its characters 

 C. Andre w s i i, but as large as C. v i d u u s. 



The specimen is a female, and on comparison with the same sex of C. 

 A n d r e w s i i, it is found to differ not only in size and by the more coarse 

 punctures of the base of the thorax, but also by the labrum being less 

 elongate, the lobes less slender, the emargination more broadly rounded, and 

 not extending so near to the base as in that species ; the sides of the thorax 

 are distinctly angulated near the middle. 



DYSCHIRIUS Bon. 



D. obesus, rufo-testaceus parum nitidus, epistomate late emarginato, alis 

 rotundatis, thorace latitudine breviore ovato, antice parum angustato ; elytris 



1866.] 



