THE ANNAJ.S 



AND 



MAGAZINE OF iNATURAL HISTORY. 



[FOURTH SERIES.] 

 No. 120. DECEMBER 1877. 



LVII. — Report on the Echinodermata collected during tlie Arctic 

 Expedition^ 1875-6. By Prof. P. Martin Duncan, M.B. 

 Lond., F.R.S., Pres. Geol. Soc, and W. Percy Sladen, 

 Esq., F.G.S., F.L.S., &c. 



[The Echinodermata collected in Smith's Sound and at the 

 winter quarters of H.M.SS. 'Alert' and 'Discovery' were 

 obtained by the naturalists of the expedition, Capt. Feilden, 

 R.A., and Mr. Hart, under the superintendence of Capt. Sir 

 George Nares, R.N., F.R.S., under no small difficulty. 

 Apart from the trouble of dredging when the tangles froze on 

 coming out of the sea, the proceeding could not be frequently 

 attempted ; yet the number of specimens collected was consi- 

 derable. The collection, consisting of specimens admirably 

 cleaned and preserved in spirit, and of others equally well 

 taken care of in the dry state, was sent to the British 

 Museum. Dr. Giinther confided it to me for description and 

 classification ; and after I had determined the species, I asked 

 Mr. Percy Sladen, F.L.S., F.G.S., to examine the forms 

 independently and to join me in drawing up this report. Our 

 results were nearly the same ; but to my colleague is due the 

 new species of Aster acanthion. Dr. Carpenter was good 

 enough to examine and determine the two species of Coma- 

 tula. I am very glad to have this opport\inity of thanking 

 Capt. Feilden for his assistance in giving information regarding 

 the depth, temperatures, and localities relating to the speci- 

 mens., 



The collection is so interesting and the specimens are so 

 Ann. & Mag. N. Hist. Ser 4. Vol. xx. 31 



