82 THE VOYAGE OF H.M.S. CHALLENGER. 



the form of the three hook-shaped processes ou the appendages of the first pair, as shown 

 in the respective figures (compare figs. 3 and 13). 



The telson and uropoda (fig. 16) wouki not seem to difier essentially from those parts 

 in Euplmusia similis. 



Colour. — According to Dana, this species, in a living state, is more or less tinged with 

 red or purple, especially along the ventral face of the body. 



Hahitat. — The specimens in the collection were taken at the surface of the sea in the 

 following localities, as shown in the table : — 



The specimens examined by Dana were collected in the tropical region of the 

 Atlantic (lat. 2° N.). 



Distribution. — The distribution of the present species, as yet known, would accord- 

 ingly seem to be chiefly restricted to the southern parts of the Atlantic and Pacific 

 Oceans. 



17. Euphausia murrayi, G. 0. Sars (PL XIV. figs. 1-4). 



Eiqyliaima murrayi, G. 0. Sars, Preliminary Notices on the Challenger Schizopoda, No. 16. 



Specific Characters. — Form of body somewhat more slender than in Euphausia 

 splendens. Carapace rather elongate, with a single lateral denticle, placed in front of the 

 middle of the inferior margin ; anterior part very slightly keeled above ; rostral projection 

 short ; frontal margin forming on either side, above the eyes, an obtuse angle. Caudal 

 segments smooth above, with rather deep epimera, the posterior pair triangular, produced 

 posteriorly. Last segment not much longer than preceding ; preanal sjiine obsolete. 

 Eyes short and thick, claviform. Antennular peduncle provided above at the end of the 

 basal joint with an anteriorly pointing lolie, obfiquely emarginate at the tip. Atitennal 

 scale oblong, truncate at apex, denticle of outer angle very small. Gill-trunks very 

 broad and flattened, with numerous exceedingly slender, well-nigh fifiform lobules. 

 Telson with three pairs of dorsal denticles ; subapical spines smooth. Inner plate of 

 uropoda very slightly overreaching outer. Length attaining 43 mm. 



Remarks. — Next to Euphausia superha, this Euphausia is the largest in the collec- 



