586 Dr. R. von Willemoes-Suhm on Crustacea 



got a successful dredging from 310 fathoms, showing that the conditions, 

 whatever they may be, which do not allow the higher Crustacea to live in 

 shallow water near the antarctic islands (a fact which will be shown to be 

 also the case near Kerguelen and Heard Islands), do not apply to greater 

 depths ; for now we found plenty of higher Crustacea, fine Caridid decapods, 

 Galatheas, and large spiny brachyurous crabs, allied to Pisa and Maia, of 

 the finest red colour. This was the only time we got near the islands a 

 dredge in such an intermediate depth as 310 fathoms. 



Halfway between Prince -Edward Islands and the Crozets we had two 

 trawlings in greater depths, both successful and very important, as they 

 showed clearly that also in these southern regions of the Indian Ocean 

 several of the animals are to be found which inhabit the deep sea of the 

 Atlantic. Euplectella, Hyalonema, Umbellularia, Brisinga, Pourtalesia, as 

 well as Macrurus and Halosaurus were all well-known forms to us, and 

 in most cases, I should think, the same species which we have found all 

 over the Atlantic. The Crustacea were represented by several Scaljpella, 

 which were attached to Bryozoa by the same bluish Serolis which we got 

 the first time on the coast of Brazil in 700 fathoms. An Arcturus was 

 rather common, and so was an Isopod, which is very characteristic for 

 the antarctic deep sea, but which nearly always comes up completely 

 spoiled, as it loses all its antennae and legs, evidently breaking like glass. 

 "We succeeded only once in getting a specimen, 24 millims. long, in 

 which the second antennae and the legs were preserved ; and this one 

 shows that it has a very long flagellum of the second antenna and the 

 third and fourth pereiopods elongated and exceedingly thin. Its sub- 

 sequent pereiopods are foliaceous swimmerettes, and its abdomen con- 

 sists only of one segment. All this, besides its blindness, shows that it 

 is a member of the family Munopsidae, established by Sars, who has de- 

 scribed several genera. Besides this larger species we found a smaller 

 one in the antarctic deep sea which probably belongs to the same genus, 

 but is rarer and equally very liable to lose all its appendages. Another 

 Munopsid, which, however, may belong to a different genus, was found 

 formerly by us in deep water (2175 fathoms) in the Atlantic, between 

 Bermudas and the Azores, in lat. 38° 3', long. 39° 13' W. It is 

 very large, 40 millims. long, and perfectly transparent and soft, so 

 that it collapses as soon as taken out of the water. Its first antenna is 

 of moderate size, the second is broken. The first pereiopod is a prehensile 

 organ ; the three subsequent ones are broken. The last three feet are 

 terminated by exceedingly large foliaceous joints, and the abdomen con- 

 sists of one single segment. The large posterior pereiopods make this 

 strange animal look still stranger ; but it is in every respect a normal 

 member of the family Munopsidae. I shall describe all these species 

 when I come home, and shall be able to compare them with Sars's 

 drawings. 



The deep-sea dredging between Prince-Edward Islands and the Crozets 



