distally slightly produced above in E. splendens, G. O. S., fur- 

 thermore this species has never been taken in the Northern or 

 the tropical Atlantic. Sars enumerates three localities in the sou- 

 thern Atlantic or off the Cape of Good Hope, ail southof lat. 34° 

 S. (and besides one station in the southern Pacific); the Copen- 

 hagen Muséum possesses numerous spécimens from three places 

 south of or far south-west of the Cape of Good Hope and from 

 various localities in the Pacific; in ail probability E. splendens, 

 G. O. S., does not inhabit the tropical Atlantic. E. splendens, 

 Dana, is perhaps identical with E. Mulleri, Claus, but it cannot 

 be proved, because, according to kind information from Miss 

 Mary J. Rathbun, « no types of Dana's species of Euphausia or 

 Eucopia are extant » ; wishing, however, to avoid further con- 

 fusion I will cancel Dana's species as unrecognisable; for the 

 species described by Sars as E. splendens I propose the name 

 E. lucens. 



Dana writes on E. gracilis : « Length, half an inch » — 

 which is the same size as he gives on E. splendens and E. pel- 

 lucida — and : « First joint of inner antennas sparingly produced 

 and acute at apex ». But in E. gracilis, G. O. S., the basai an- 

 tennular joint has no process or leaflet above at the end which 

 is not acute, and according to Sars himself this species, of which 

 he had « a good many spécimens » measures only « about io mm »; 

 it is in reality not only a very small but an exceedingly slender 

 species, while E. gracilis, Dana, according to Dana's figure, is 

 even less slender than E. pellucida and must be a good deal 

 larger than E. gracilis, G. O. S. E. gracilis, Dana, is therefore 

 not identical with E. gracilis, G. O. S., but it must be discar- 

 ded as quite unrecognisable; for the characteristic E. gracilis, 

 G. O. S., I propose the dénomination E. tenera. 



According to the description and the figures of Sars, E. pel- 

 lucida, G. O. S., is distinguished by possessing two pairs of 

 latéral denticles on the carapace, while only one pair or no den- 

 ticle at ail is found in the other forms of the genus. But I have 

 four excellent species with two pairs of latéral denticles, each 

 of thèse species from a large number(more than twenty) stations, 

 and judging from the list of stations givenby Sars and from his 



(42) 



