54 Mr. E. J. Miers on Arctic Crustacea. 



tacea were collected at a depth of 30 fathoms, in August 1876. 

 (Bottom consisting of stones and mud.) 



Cape Louis Napoleon, a prominent headland of Grinnell 

 Land, in lat. 79° 38' N. The Crustacea were obtained at a 

 depth of 25 fathoms, in August 1876. 



Franklin-Pierce Bay, Grinnell Land, in 79° 29' N. lat. 

 Crustacea were collected at a depth of 15-20 fathoms, in Au- 

 gust 1875. 



Dr. Liitken, in his valuable " List of the Crustacea of 

 Greenland," published in 1875, in the 'Manual of Instruc- 

 tions for the Arctic Expedition,' enumerates 184 species of 

 Crustacea and Pjcnogonida ; and Norman, in the ' Report on 

 the ' Valorous ' Expedition,' gives 249 as the number of 

 species belonging to the West-Greenland fauna alone, no 

 fewer than 113 species having been collected in Davis Straits 

 and on the west coast of Greenland hj that Expedition. Only 

 31 species were collected by the Arctic Expedition in Smith 

 Sound and the seas to the northward ; whence it is evident 

 that in the highest latitudes there is a great decrease in the 

 number of sjyecies of Crustacea, which is but partially com- 

 pensated for by the increase in number of the individuals 

 of certain well-known species which attain a much larger 

 size than specimens of the same species collected in lower 

 latitudes. From the Table appended it appears that this 

 decrease is mainly in the orders Amphipoda and marine 

 Ostracoda. Of the latter group no species were collected by 

 the naturalists of the ' Alert ' and ' Discovery.' 



The following Table exhibits, (I.) the number of species 

 obtained during the ' Valorous ' cruise on the west coast of 

 Greenland and in Davis Straits ; (II.) the number mentioned 

 by Buchholz as occurring on the south and west coasts of 

 Greenland ; (III.) the number obtained by the British Arctic 

 Expedition north of lat. 78° N. in Smith Sound and on the 

 coasts of Grinnell Land : — 



II. III. 



Brachyura 3 



Anomura 1 



Macrura 11 



Stomatopoda 



Cumacea 6 



Isopoda 7 



Amphipoda 35) 



Phyllopoda 3 



Ostracoda 34 



Copepoda 2 



Cimpedia 4 



Pycnogonida 3 



113 36 31 



