Mr. J. Gould 071 a new species of Tree-Stvift. 63 



which wc arc now acquainted — the four previously known being the 

 splendid D. luystaceus of New Guinea and the Aru Islands, the D. 

 comatus of Manilla and ^Malasia, the old D. Jdecho of Java, and the 

 D. coronafvs of India, The new species (which is the second in 

 size, being only exceeded in this respect by the D. mystaceus) is, as 

 already stated, from Macassar, Celebes ; it is most nearly allied to 

 the I), comatus and D. klecho, but diifers from both those birds in 

 its much larger size, and in the deep-blue colouring of its shoidders 

 and wings. This bird, which I have named Wallacii in honour of 

 its discoverer, may be thus described : — 



Dendrochelidon Wallacii. 



Crown of the head deep green, with steel-hlue reflexions ; lores 

 black ; over each eye an indistinct stripe of greyish- white ; sides and 

 back of the neck and the upper part of the back green, passing into 

 grey on the lower part of the back and nuiip, which colour again 

 passes into the bluish-green of the upper tail-coverts ; shoulders 

 blue, with reflexions of green ; primaries bluish-black, with green 

 reflexions ; tertiaries greyish-white ; tail bluish-black ; throat and 

 under surface grey, passing into greyish-white on the vent and under 

 tail-coverts ; bill and feet olive. 



Total length 1 inches ; bill, from gape to tip, \ ; wing 7f , 

 tail oi. 



Remark. — The usual chestnut-coloured mark immediately below 

 the ear, indicative of the male, occurs in this as in the other mem- 

 bers of the genus. 



On the Sea Bear of Foster, the Ursus martnus of 

 Steller, Arctocephalus ursinus of Authors. By Dr. 

 Gray, F.R.S., V.P.Z.S., P. Ent. Soc. 



Steller figures and describes a large Seal under the name of Ursus 

 marinus (^o\. Comm. Petrop. ii. 331, t. 15), which is the author- 

 ity for the Ursine Seal of Pennant (Quad. ii. .52(5) and Phoca ursina 

 of Schreber, Gmelin, and most succeeding authors. 



Forster, in Cook's ' Second Voyage' (ii. 203), appears to speak of 

 the same animal \mder the name of " Sea Bear." 



I had not been able to see a specimen of this species in any of 

 the Museums which I had examined on the Continent or in En- 

 gland, or to find a skiiU of the genus from the Northern Pacific 

 Ocean ; yet I felt so assured, from Steller' s description and the geo- 

 grai)hical position, that it must be distinct from the Eared Fur-Seals 

 from the Antarctic Ocean and Australia, \vith which it has been 

 usually confounded, that, in my * Catalogue of Seals in the Col- 

 lection of the British Museum,' I regarded it as a distinct species 

 under the name of Arctocephalus ursinus, giving an abridgment of 

 Steller's description as its specific character. 



The British Museum has just received, under the name Otaria 

 leonina, from Amsterdam, a specimen of the Sea Bear from Behring's 

 Straits, which was obtained from St. Petersburg. It is evidently 

 not an Otaria, l)ut a true Arctocephalus, and agrees in all its cha- 



