1856.] 30 



Length -20. 



Locality. Middle and Southern Stateg. 



This insect is very closely allied to C. caesia, but differs in having the 

 thorax wider, and the body longer and more narrow in proportion to its size. 



39. C. polygoni. Oblong oval, brilliant metallic blue, head blue-black 

 punctured, antennse black, basal joint rufous beneath and at tip, thorax rufous 

 sparsely and finely punctured, elytra brilliant metallic blue densely punctured, 

 under surface blackish blue, legs rufous, tarsi black, anus rufous. 



Length -18. 



Linn. Fn. Suec. .^)20 ; Syst. Nat. 2, 589, 24. Harris, Insects, 118, (2d edition.) 



C. ca'ruJeipennis Say, J. Acad. 5, 296. 



Phmdon polygoni Kirby, Fn. Bor. Am. 216. 



Localily. Southern and Middle States. 



40. C. formosa. Oblong ov.al, convex, above golden green, strongly punc- 

 tured, thorax with the basal angles obtuse, scutellum purple, elytra strongly 

 punctured, suture purplish, exterior edge blue, antennae and palpi black, tibice 

 black, under surface violaceous. 



Length -18. 



Say, J. Acad. 3, 451. 



Locality. Kansas and Santa Fe. 



List of Species unknown to me. 



C. vim in alls Linne. Mann. Bull. Mosc. 1853. Russian America. 



C. lapponica Linne. Mann. Bull. Mosc. 1853. Russian America. 



Phratora interstitialis Mann. Bull. Mosc. 1853. 



C. basilar is Say, J. Acad. 3, 451. 



C. adonidis Fabr. El. 1. 431. Phaedon adonidis Kirby, F. B. A. 216. 



Gastrophysa ajnea Mels. Pr. Acad. 3, 175. 



Gastrophysa raphani Fabr. Kirby, F. B. A. 216. 



All the specimens, I have described in the preceding pages, are in tiie 

 Cabinet of Dr. J. L. Le Conte, to whom I must return my sincere thanks for his 

 valuable assistance and the kind loan of books and specimens. 



Notes on North American Birds in the Collection of the Academy of Natural Sciences, 

 Philadelphia, and National Museum, Washinyton. 



By John Cassin. 



1. BuTEO MONTAKUS, Nuttall, Man. Orn. U. S. i, p. 112, (1840). 



" Buteo Swainsonii, Bonap.," Cassin, B. of Cal. and Tex. i, p. 98. 



" Falco buteo, Linn." Aud. Orn. Biog. iv, p. 508. And. B. of Am. pi. 372, 

 Oct. ed. i, pi. 6. 



On examination of not less than twenty specimens of this bird from various 

 localities in the Western countries of North America, I have found the charac- 

 ters constantly present which distinguish it from Buteo borealis, as pointed out 

 in my Birds of California and Texas, p. 98. The voice of this species is repre- 

 sented by several of the late naturalists who have visited California, as quite 

 peculiar, and I am assured by my friend Dr. Thos. M. Brewer, of Boston, that 

 the egg is entirely different from that of B. boreali.f. Though nearly related to 

 that species, it is very probably entitled to be regarded as distinct, for which 

 purpose Mr. Nuttall's name as above given is proper. 



This bird appears to be of common occurrence in California, being brought 

 in nearly every collection from that country, and it is also in Dr. Sucklej^'s col- 

 lection from Washington Territory. The specimen figured by Mr. Audubon as 

 above, and which was brought by Dr. Townsend from the Rocky Moi\ntains, is in 

 the collection of the Philadelphia Academy. It is the same specimen described 

 by Mr. Nuttall, and named as above. 



