THE VOYAGE OF H.M.S. CHALLENGER. 



LIST OF SPECIES OBTAINED FROM DEPTHS EXCEEDING 2000 FATHOMS. 



Depth in Fathoms. 

 2050 

 2160 

 2160 

 2160 



2160, 



2225 



2160, 2300, 2385, 2600, 2650, 

 2225 

 2225 

 2225 

 2225 

 2225 

 2300 

 2300 

 2425 

 2425 

 2500 

 2500 

 2600 

 2600 

 2600 

 2600 

 2600 

 2600 

 2650 

 2750 

 2750 



2900 



Deima validum, Th(5el. 



Parelpidia elongata, Th6el. 



Elpidia verrucosa, Theel. 



Scotoplanes globosa, Theel. 



Benthodytes mamillifera, n. sp. 



Oneirqphanta mutabilis, Theel. 



Parelpidia cylindrica, n. sp. 



Benthodytes sordida, n. sp. 



Benthodytes sanguinolenta, n. sj>. 



Benthodytes abyssicola, n. sp. 



Psyehropotes longicauda, n. sp. 



Elpidia rigida, n. sp. 



Achlyonice paradoxa, Theel. 



Peniagone wyvillii, n. sp. 



Benthodytes papillifera, n. sp. 



Peniagone lugubris, n. sjj. 



Psyehropotes semperiana, n. sp. 



Elpidia glacialis, Theel. 



Scotoplanes globosa, Theel. 



Scotoplanes mollis, Theel. 



Peniagone atrox, n. sp. 



Scotoanassa diaphana, n. sp. 



Benthodytes sanguinalenta, var. marginata, n. 



Scotoplanes papillosa, Theel. 



Benthodytes selenhiana, n. sp. 



Psycheotrephes exigua, n. sp. 



With regard to the geographical distribution of the Elasipoda, it must he noted that 

 our information with respect to it is too defective, and the number of deep-sea dredgings 

 even now too small to admit of any general results being attained. However, it 

 will be apparent from the following list that the Elasipoda are distributed throughout 

 all seas. Some of them are very widely distributed over the bottom of the deep sea. 

 Elpidia glacialis, Theel, is found in the Arctic Ocean and in the North Atlantic, in 

 addition to which one individual has been brought home from Station 160, south of 

 Australia. Lcetmogone violacea, Theel, was dredged by the Challenger Expedition, close 

 to Sydney, and during the cruise of the " Knight Errant" between the Faroe Islands and 

 the coasts of Scotland in the summer of 1880, Mr Murray brought home more than a 

 hundred specimens. It cannot be doubted that those two almost antipodal forms will be 

 found at many interjacent localities when a larger area of the oceanic abysses has been 

 tixplored. Of all the Elasipoda Oneirophanta mutabilis seems to have the widest distri- 

 bution and occurs without doubt all round the world ; it has been obtained from the 

 South Atlantic Ocean, Station 325 ; from the South Indian Ocean, Stations 146, 157, an 



