26 [i^EB. 



tetrandrous, in axillary, filifortn, compound racemes, the upper clusters stylife- 

 rous only. 



Hab. Near Monterey, Upper California. 



PEUOEDANUM. 



^. Carpels with two of the lateral ribs undulately winged; vitttc indistinct, 1 

 or 2; commissure *Peccelimum. 



P. *abrolanifi)Uu)n. Somewhat pubescent, branching from the base ; leaves 

 ternately decompound, ultimate segments narrowly linear ; involucels about 7 

 to Qleaved, the leaflets palmate, distinct, petiolulate, nearly as long as the um- 

 bellet; fruit obovate-elliptical, with a broad, winged margin, and some of the 

 inner ribs with undulated membranaceous margins. 



Hab. Pueblo de los Angeles, Upper California. (A single specimen, not far 

 enough advanced to ascertain the ultimate character of the fruit.) 



Tlie Committee on Mr. Cassin's " Descriptions of two new species 

 of Cyanoco?-ax, contained in the collection of the Academy of Natural 

 Sciences of Philadelphia," reported in favour of publication. 



Descriptions of new species of the Genus Cyanocorax, Boie, of which specimens 

 are in the collectio7i of the Academy of Natural Sciences of Philadefphia. 



By John Cassis. 



CxANOCoaAX Harrissit nobis. Head crested, which, with the cheeks and 

 entire front of the face and neck, to the breast, are brownish black. Occipital 

 region and back of the neck, white, which colour gradually blends into that of 

 the back. 



Upper surface of the body, wings and tail, glossy violet blue, darker on the 

 wings and tail. 



Under parts of the body, from the breast to the under tail coverts, including 

 the latter, of the same colour as the back, but more tinged with cinereous. 



Inner webs of primaries, and under surfaces of the wings and tail, black. 



Bill and legs, black. Tail without white. 



Total length of skin, from tip of bill to end of tail, about 14 inches, wings 8 

 inches, tail 7 inches. 



Hab. Guayaquil, South America. 



The specimen now described belongs to the Rivoli collection, and is labelled, 

 " Corvus cle Guayaquil." 



This species belongs to the same group as C. cayanus, Lin?!., C. cyanopogon, 

 Weid., and others, but may readily be distinguished from any described species, 

 by the uniformity of the colours of the upper and under parts of the body, and 

 also by the entire absence of white on the tail. 



I have named this handsome bird in honour of Edward Harris, Esq., of Moores- 

 town. New Jersey, the early friend and associate of Mr. Audubon, and author of 

 various valuable contributions to the natural history of North America. 



Cyanocorax concolor, nobis. Entire plumage glossy ultramarine blue, except 

 the inner webs of the primaries, and the under surfaces of the wings and tail. 

 which are black. Bill and lesjs black. No crest whatever. 



