44 THE VOYAGE OF H.M.S. CHALI,ENGER. 



branclied hairs upon the basal joint ; in this they agree -n-ith Serolis paradoxa and the 

 Australian species of the genus. 



The opercuJa have the exopodite divided by an oblique suture. 



The exopodite of the gill appendage is bifurcate. 



The uropoda are attached close to the termination of the caudal shield, and extend 

 a little way beyond it ; they are comparatively large and foliaceous, and furnished with 

 numerous branched hairs. 



Station 304, December 31, 1875; lat. 46° 53' S., long. 75° 12' "\V.; 45 fathoms 

 bottom, green sand. 



Station 313, January 20, 1876; lat. 52° 20' S., long. 67° 39' W. ; 55 fathoms 

 bottom, sand. 



Station 314, January 21, 1876; lat. 51° 35' S., long. 65° 39' W. ; 70 fathoms 

 bottom, sand. 



Station 315, January 26, 1876; lat. 51° 40' S., long. 57° 50' W. ; 12 fathoms 

 bottom, sand, gravel. 



Station 316, February 3, 1876 ; lat. 51° 32' S., long. 58° 6' W. ; 4 fathoms ; bottom, 

 mud. 



4. Serolis latifrons, White (PI. II. figs. 1-4). 



Serolis latifrons, Wiite, List Crust. Brit. Miis., 1847, p. 106. 

 Serolis latifrons, Miers, E. J., Ann. and Mag. Nat. Hist, 1875, p. 74. 

 Serolis latifrons, Miers, E. J., Cat. New Zealand Crust., 1876, p. 117. 

 Serolis latifrons, Smith, Bull. TJ. S. Nat. Mus., 1876, vol iii. p. 63. 

 Serolis latifrons, Miers, E. J., PhiL Trans., 1879, extra vol., p. 204. 

 Serolis latifrons, Studer, Th., Archiv f. Naturgescli., 1879, p. 26. 



This species was named and described by White from specimens obtained during the 

 voyage of the "Erebus" and "Terror"; one of these specimens is preserved in the 

 British Museum, and was dredged at Rendezvous Cove, Auckland Islands. Miers first 

 described the species from specimens, brought home by the Transit of Venus Expedition 

 from Kerguelen Island, and a more detailed description of the same species is to be 

 found in Studer's Beitrage zur Kenntniss niederer Thiere von KerguelensJand.^ 



A number of specimens were dredged by the Challenger at Christmas Harbour, 

 Kerguelen, 25 fathoms, and two others which present some differences from the t^'pical 

 form were dredged in deeper water (210 fathoms) off Possession Island. 



Without entering into any systematic description of this species, which has already 

 been sufficiently done by the above mentioned authors, I may add here a few details. 



Studer describes the largest specimens as attaining a length of 40 mm. and a breadth 

 of 30 mm. ; these are evidently females, which he says are 1 to 2 mm. less than the 



' Archiv f. Naturgesch., loc. cit., p. 26. 



