AMERICAN PHILOSOPHICAL SOCIETY. 529 



2. C. LIGATUS Germar, Sp. Novas, p. 6.— Since described by 

 Dejean under the name of carinatus, Sp. Gen. 2, 80. He quotes 

 ligatus doubtfully as synonymous. His description, however, 

 agrees so perfectly that I feel no hesitation in considering them 

 the same. 



3. C. SERRATUS Say, Trans. Amer. Philos. Soc— Since de- 

 scribed by Dejean under the name of Uneato-punctatus, Sp. Gen. 



. 2, 77 ; the former has, of course, the priority. 



4. C. EXTERNUS Say, Jour. Acad. Nat. Sc— The largest 

 American species I have seen. It belongs to Dejean's twelfth 

 division of this numerous genus. What is the C. teedatus L. ? 



CALOSOMA Weber. 



1. C. LUXATU3I Say, Jour. Acad. Nat. Sc. 3, 149.— Dei.. So. 

 Gen. 2, 196. ^ 



2. C. L^VE Dej., Sp. Gen. 2, 210.— I obtained an individual 

 of this insect in Mexico. It corresponds accurately with the 

 description ; but in addition I may add that it varies in having a 

 large obscure rufous spot on the vertex. 



3. C. CALIDUM Fabr. — My description in the Trans. Amer. 

 Philos. Soc. was taken from the true Fabrician species as is evinced 

 by the expression " dilated, impressed, golden dots," as applied to 

 the elytral [417] excavations. But I did not sufficiently examine 

 the very closely allied species which Dejean has separated from it, 

 as I supposed it to be only a variety. 



ELAPHRUS. 

 1. E. ruLiGiNOSUS. — This new species was found in Pennsyl- 

 vania by Mr. Le Sueur, to whom I am indebted for the specimen ; 

 and although the head and thorax are destroyed, yet sufficient 

 character remains to prove it the analogue of the U. uliginosus, 

 Fabr., of Europe. In comparison with that species, however, 

 many dissimilarities are perceptible. The discoidal indentations 

 are larger and more obviously emarginated by the entering an- 

 gles of the interstitial spaces. The interstitial spaces are some- 

 what less regular, and have rather large punctures, particularly 

 towards the base ; towards the tips of the elytra the punctures 

 are not larger than those of the uliginosus, but are fewer in num- 

 1834.] 34 



