OF THE KERGUELEN REGION OF THE GREAT SOUTHERN OCEAN. 381 



Corals : 



Deltocyathus italicus, 1 M. -Edwards and Haime. 

 *Leptopenus hypoccelus, Moseley. 

 Solenosmilia variabilis, 2 Duncan. 



Deep-sea Medusa : 



*Leonura terminalis, Haeckel. 

 *Nauplwnta challenger i, Haeckel. 

 *Periphylla mirabilis, Haeckel. 

 *Tesserantha connectens, Haeckel. 



Siphonophor^e : 



*Anthemodes articulata, Haeckel. 

 *Baihyphysa gigantea, Haeckel. 



Cpjnoidea : 



^Rhizocrinus* lofotensis, 4 Sars. 



Asteroidea : 



Dytaster exilis* Sladen. 



,, ,, var. gracilis, Sladen. 



* ,, nobilis, Sladen. 



Freyella benthophila, Sladen. 

 *Hy 'monaster anomalus, Sladen. 



I have little to add to the very full accounts of the many varieties of Deltocyathus italicus contained in the 

 memoirs cited. ... It is very remarkable that none of the specimens obtained by us were attached, and that 

 only one shows any trace of ever having been attached. This one specimen [from Station 285, South Pacific, 2375 

 fathoms], however, is large, and though somewhat imperfect, has a most distinct pedicle and scar of attachment, and 

 evidently remained fixed up to a period of full maturity. — (Moseley, Zool. Chall. Exp., part 7, pp. 145, 146.) 



2 Solenosmilia variabilis is a very widely-spread and characteristic deep-sea form, and varies exceedingly. Many 

 specimens dredged by us were dead, old, and much broken, but always recognisable by the peculiar mode of branching 

 and the texture of the coenenchym. — (Moseley, Zool. Chall. Exp., part 7, p. 181.) 



3 Of the stalked Crinoids Rhizocrinus has the farthest northern range (68° N.), but it has not been met with more 

 than once (Station 122), or possibly twice (Station 323), south of the equator, and is limited to the Atlantic and Carib- 

 bean Ocean.— (Carpenter, Zool. Chall. Exp., part 32, p. 136.) 



4 The form of the calyx in this species [Rhizocrinus lofotensis] varies very considerably ; for it is nearly hemi- 

 spherical in some specimens and much elongated in others. These last have the best developed arms ; and to some 

 extent, therefore, the forms with a low and wide cup must be regarded as premature. But differences of development 

 will not entirely account for the variation, as the calyx of a young specimen found by Sars is distinctly higher (longer) 

 than broad.— (Carpenter, Zool. Chall. Exp., part 32, p. 261.) 



5 Of Dytaster exilis and its two varieties, carinata and gracilis, Sladen writes : — The variety carinata resembles the 

 type more nearly than the variety gracilis does. The wide separation of the geographical positions of the type and its 

 two varieties is of the greatest interest, and bears evidence to the enormous range of the Dytaster exilis form, and of the 

 comparatively small amount of variation exhibited by this type in what may well be spoken of as extreme limits of 

 position. The type comes from the Pacific, off the western coast of South America, the nearly allied variety carinata 

 trom the North Atlantic, off the eastern coast of theTJnited States of America, whilst the more divergent variety — 

 if, indeed, it be not a distinct species — was dredged in the South Atlantic, westward of Tristan da Cunha.— (Zool. Ghali. 

 Exp., part 51, p. 70.) 



