Mr. E. J. Miers on Arctic Crustacea. 57 



increase in size and number as regards individuals in the 

 highest latitudes, range over a zone comprehending the 

 whole circumpolar or Arctic region, as has been already sug- 

 gested by Dana, in the second volume of his work on the 

 Crustacea collected by the United-States Exploring Expedi- 

 tion under Commodore Wilkes (pp. 1554, 1579), correspond- 

 ing to the Antarctic region of the same author. 



It has been thought useful to give, in the synonyma, full 

 references to the earlier British Polar voyages and Arctic 

 expeditions wherein lists of the Crustacea collected are pub- 

 lished ; but reference is only made to the principal works of 

 the Danish and Scandinavian naturalists, by whose labours 

 our knowledge of the lower orders of the Crustacea has been 

 so greatly increased. 



A small collection of Crustacea made by A. C. Homer, Esq., 

 while on board the yacht ' Pandora,' which has been placed 

 in my hands for examination, contains only two species col- 

 lected north of lat. 78°, i. e. three specimens of Atylus cari- 

 natus, and four very small specimens of an Amphipod, 

 perhaps belonging to the genus Pherusa. Both these species 

 were collected at a depth of 7 fathoms on a clay bottom, in 

 Pandora Habour, Smith Sound, in lat. 78° 17' N. 



DECAPODA. 



CrA-N'GONID^. 



Cheraphilus horeas. 



Cancer 6o7-f as, Phipps, Voy. North Pole, p. 190, pi. xii. fig. 1 (1774). 



Cancer homaroides, O. Fabr. Fauna Groenlandica, p. 241 (1780); M,»lir, 

 Isl. Naturh. p. 108. no. 245, pi. v. (1780). 



Crangon horeas, Fabr. Ent. Syst. Siippl. p. 410 (1798) ; Sabine, Parry's 

 1st Vov. Append, no. x. p. 57 (1821) ; Ross, Append. Capt. Parry's 

 .^rd Vuy. p. 120 (182G) ; 4th Voy. p. 205 (1828) ; Ross and Owen, 

 Crust, in Append. Ross 2nd Voy. p. Ixxxi (1835) ; M.-Edw. Hist. 

 Nat. Crust, ii. p. .342 ( 1837) ; Krcfyer, Nat. Tidsskr. iv. p. 218, pi. iv. 

 tigs. 1-14 (1842-43); Brandt, Crust, in MiddendortTs Sibirische Reise, 

 p. 114 (1851) ; Bell, Crust, in Belcher, 'Last of the Arctic Voyages,' 

 li. p. 402 (1855) ; Buchliolz, Crust, in Koldewey, Zweite deutsche 

 Nordpolarfahrt, ii. p. 271 (1874). 



Cheraphilus horeas, Kiuahan, Proc. Royal Irish Acad. viii. p. 68 

 (1864). 



Coll. Feilden : Discovery Bay, lat. 81'-" 44' (both males and fe- 

 males), at depth of 25 fathoms; Cape Napoleon, one male example, 

 at 25 fathoms ; Franklin-Pierce Bay, one female, at 15 fathoms : 

 temperature of water 29°-50. 



In the large series of this species collected, the females arc uni- 

 formly larger than the males and more robust, the frontal lobe, 



