167 



46. SuLA FUSCA. 



Pelecanus plotus, Forst. Descr. Anim. p. 278. 

 " Pelecanus fiber, Linn.," G. Forst. Icon. ined. 108, 

 Sula fusca, Briss. ? 

 Hab. New Caledonia. 



6. Description of a New Species of Diver (Colymbus). 

 By George Robert Gray, Esq., F.L.S., etc. 



Colymbus adamsii, G. R. Gr. 



Closely allied to C. glacialis ; but the head and collar round the 

 neck shining bluish-black, except on the top of the head and neck, 

 which have a slight green reflexion ; the rows of spots of the tertials 

 and secondaries very much larger and more like those of C. arcticus, 

 while the spots on the sides of the abdomen and upper tail-coverts 

 are smaller than those of C. glacialis. This bird is easily distin- 

 guished from either of those species by its larger bill, by having the 

 gonys more strongly developed, and by its bill being of a yellowish- 

 white colour. 



Length 31" ; bill from gape b", from the base of culmen 3" 9 fff ; 

 wings 15". 



Hab. Russian America. 



This fine species is named after the late Mr. Adams, Surgeon of 

 H.M.S. Enterprise, commanded by Capt. Collinson, in the voyage 

 made by him through Behring's Straits. Mr. Adams employed his 

 pencil in producing beautiful drawings of the remarkable birds ob- 

 tained during the voyage ; but after his return to this country, he 

 undertook the appointment of surgeon to one of II. M. S. on the 

 West African Station, where he soon fell a victim to the unhealthy 

 climate. 



7. On some New Freshwater Shells from Ecuador and 

 New Granada, in the Collection of Hugh Cuming, 

 Esq. By Dr. Von dem Busch. 



1. Melania fusco-punctata, V. d. Busch. 



Testa ovato-turrita, tenuis, Icevis, nitida, lutea cum numerosis 

 punctis fuscis in seriebus transversis circumdata ; anfraclibus 

 A parum con vex is ; margine columellari albo ; apertura ovata, 

 alba, intus ma cutis fuscis nonnullis ornata. 



Long. 8'", diam. 5'" ; apertura 4'" alta, 3'" lata. 



Hab. Ecuador. 



This fine Melania, found, according to the statement of Mr. 

 Cuming, by Mr. Eraser in Ecuador, is particularly distinguished by 

 numerous red-brown points, which are arranged in transverse lines 



