EUPHAUSIACEA. 2S3 



furthermore it was taken at the Fiji Lslaiuls aiul in the North Pacific; Ort- 

 mann's specimen from tlic H awaiian Islands belongs to this species, while his 

 specimen from off Galera Point is too poor for determination. — The species has 

 very rarely been taken at the surface. 



40. Stylocheiron maximum II. J. H.\nsen. 



1908. Stylocheiron maximum H. J. H.^nsen, The Danish Ingolf-ExpecL, 3, 2, p. 92. 

 1910. Stylocheiron ma.rimum H. J. Hansen, Siboga-Exp., 37, p. 121, pi. 16, figs. 6a-6d. 



Sta. 41346. Nov. S, 1904. Lat. 4° 1.6' S., long. 89° 16.3' W. 300 fnis. to surface. 1 spedmen. 



St.a. 4679. Dec. 7, 1904. Lat. 17° 26.4' S., long. 86° 46.5' W. 300 fms. to surface. 1 specimen. 



Sta. 4707. Dec. 29, 1904. Lat. 12° 32.2' S., long. 97° 42' W. 300 fms. to surface. 1 specimen. 



Sta. 4713. Jan. 1,190.5. Lat. 5° 35.3' S., long. 92° 21.6' W. .300 fms. to surface. 1 specimen. 



Sta. 4716. Jan. 2,1905. Lat. 2° 18.5' S., long. 90° 2.6' W. 600 fms. to .surface. 1 specimen. 



Sta. 4724. Jan. 17, 1905. Lat. 11° 13.4' S., long. 109° 39' W. 300 fms. to surface. 2 specimens. 



Sta. 4742. Feb. 15, 1905. Lat. 0° 3.4' N., long. 117° 15.8' W. 300 fms. to surface. 1 specimen. 



Remarks. — The material is somewhat poor in quality, most of the speci- 

 mens being not well preserved and only two, both females, are adult. For this 

 reason a representation of this large and fine species must be postponed. 



Distribution. — In the Atlantic S. maximum extends northwards to Lat. 

 61° 49' N., long. 14° 11' W., West of the Fseroes (" Ingolf " Exp.), and it is not 

 uncommon in the area explored by the Prince of Monaco. Finally it was taken 

 at some few localities in the Indian Archipelago by the "Siboga." 



LARVAL STAGES OF EUPHAUSIACEA. 



Plate 12. 



The collection contains a large number of larvae in various stages of develop- 

 ment. But more than two thirds belong to the genus Euphausia and are not 

 very interesting; a smaller number in the later stages of development can be 

 named with certainty, but it is impossible to refer most of them to the forms to 

 which they belong. Sars has given a very detailed account of the metamorphosis 

 of his Euphausia pellucida, and though this species — according to his list of 

 synonymy, his figures, and many of his specimens examined by me — comprises 

 at least three allied species, and though it is impossible to decide whether the 

 larvae described and figured by him as stages of E. pellucida in reality belong 

 to a single or to two or three closely allied species, his figures and descriptions do 

 give an excellent account of the development of animals of the krohnii- group. 

 The time is still remote when it may be possible to give a full account of the 

 metamorphosis of at least several species of the rich genus Euphausia, a task 



