THE VOYAGE OF H.M.S. CHALLENGER. 



List of Abyssal Species found in Depths exceeding 500 Fathoms. 



Rljthoajjwu reniformis, n. gen. and sp. 



ehngata, n. gen. and sp. 

 Ari/illcecia eburnea, n. sp. 

 Bairdia acanthigera, G. S. Brady. 



abyssicola, n. sp. 



exaltata, n. sp. 



forraosa, G. S. Brady. 



foveolata, G. S. Brady. 



liirsuta, n. sp. 



milne-ed'wardsi, G. S. Brady. 



minima, n. sp. 



vidrix, G. S. Brady. 

 Maerocypris canariensis, n. sp. 



similis, n. sp. 

 Cytkere acanthoderma, n. sp. 



adunca, G. S. Brady. 



circumdentata, n. sp. 



dasyderma, n. sp. 



dictyon, n. sp. 



dorsoserrata, n. sp. 



ericea, n. sp. 



irpex, n. sp. 



normani, G. S. Brady. 



pyriformis, n. sj). 



radida, n. sp. 



serrahda, n. sp. 



Cythere speyeri, G. S. Brady. 

 squalidentata, n. sp. 

 scutigera, G. S. Brady. 

 stolonifera, n. sp. 

 suhmi, n. sp. 

 sidcato-perforcda, n. sp. 

 viininea, n. sp. 

 Kriflie hartonensis, Jones. 

 produeta, n. sp. 

 tumida, n. sp. 

 Loxoeoncha africana, n. sp. 

 Xestoleheris curta, G. S. Brady, 

 expansa, n. sp. 

 vanegata, n. sp. 

 Cyi7iero2}teron aliyssorum, n. sp. 

 fenestratum, n. sp. 

 mucronalatum, n. sp. 

 Pseiidocytliere caudata, G. O. Sars. 

 Cytherideis nana, n. sp. 

 XipMcliilus arcitatus, n. sp. 

 Cypridina gracilis, n. sp. . 

 Crossoplwrus imperator, n. gen. and sp. 

 Cytherella lata, n, sp. 



pimdata, G. S. Brady. 

 Halocypris imbricata, n. sp. 



atlantiea, Lubbock. 



List op Species obtained from Dredgings exceeding 1500 Fathoms in Depth. 



Bairdia ahyssicola, n. sp. Cythere suhmi, n. sp. 



minima, n. sp. Krithe produeta, n. sp. 



hirsuta, n. sp. tumida, n. sp. 



^ rgillcecia eburnea, n. sp. 

 Cythei'e acanthoderma, n. sp. 



circumdentata, n. sp. 



dasyderma, n. sp. 



dictyon, n. sp. 



squalidentata, n. sp. 



normani, G. S. Brady. 



Xestoleberis expansa, n. sp. 

 Pseudocythere caudata, G. 0. Sars. 

 Cytheropteron abyssorwn, n. sp. 



mucronalatum, n. sp. 

 Halocypris imbricata, n. sp. 



cdlantica, Lubbock. 



The total number of dredgings examined for the purposes of this memoir is about 

 150, besides a considerable number of surface-gatherings from the tow-net. A large 

 number of the samples, more especially those from great depths, consist largely of 

 giobigerina ooze or red clay, and in these Ostracoda are usually quite wanting. No 

 account has been kept of such barren dredgings, but lists are given in all cases where 

 even one species in recognisable condition was found. The number of such lists here 

 printed (pp. 12-30) is seventy-one, exclusive of the surface-net gatherings, so that it 

 may be accepted as pretty nearly the fact, that one-half of the dredgings contain no 



