NATURAL SCIENCES OF PHILADELPHIA. 275 



species and the next (D. humeralis,) are easily recognized by their uniform 

 black plumage, only relieved by the light bluish shoulders. 



10. Diglossa humeralis, (Fraser). 



Agrilorhinus humeralis, Fras., Proc. Zool. Soc, London, 1840, p. 22. 

 Diglossa intermedia, Cab., Mus. Hein., i. p. 97 (1850)? 

 Reich., Voeg., fig. 3754. 



Resembling the preceding, and, so far as I can see, only distinguishable by 

 its smaller dimensions, as stated by Mr. Fraser, as above cited. Specimens 

 from Venezuela. 



11. Diglossa aterrima, Lafresnaye. 



Diglossa aterrima, Lafres., Rev. Zool.. 1846, p. 319. 



Reich., Voeg., fig. 3759. 



Specimens from New Grenada. Entirely black and easily recognized, 

 though specimens apparently not mature have the under parts mixed with 

 dull brown, which color prevails on the abdomen and under tail coverts. 



12. Diglossa albilateralis, Lafresnaye. 



Diglossa albilatera, Lafres., Rev. Zool., 1843, p. 98. 



Reich., Voeg., fig. 3758. 



Numerous specimens, labelled "Bogota" and " Columbie." Uniform bluish 

 black, with a tuft of white feathers on each side, under the wing. One plu- 

 mage, however, which is perhaps not mature, is not black, but always dis- 

 tinguishable by the tuft of white feathers on the side. Upper parts (female 

 or young) yellowish olive green, nearly uniform, under parts reddish ochre 

 yellow, paler on the abdomen, wings and tail dark brown with all the feathers 

 edged with olive nearly uniform with the back. 



13. Diglossa plumbea, Cabanis. 



Diglossa plumbea, Cab., Journ. Orn. 1860, p. 411. 

 Specimens from "Costa Rica in the Museum of the Smithsonian Institution. 

 This bird is strictly of the same group as that immediately preceding, and 

 nearly of the same size, but quite a distinct and peculiar species. 



7. Genus DIGLOSSOPIS, Sclater, Ann. and Mag. Nat. Hist. xvii. p. 467, (1856). 



1. Diglossopis caerulescens, Sclater. 



Diglossopis caerulescens, Sclat., Ann. and Mag. Nat. Hist. xvii. p. 467, 

 (1856). 

 One specimen from Venezuela. 



Dec. 6th. 

 Mr. Lea, in the Chair. 



Fourteen members present. 



The published number of the Proceedings for September and Octo- 

 ber was laid on the table by the Committee on Proceedings. 



The death of Prof. B. Silliman, late a Correspondent of the Academy, 

 on the 2Jth of November, was announced. 



Dec. 13th. 



Vice President Bridges in the Chair. 



Eleven members present. 

 1864.] 



