REPORT ON THE KERATOSA. 



/ .J 



the whole, our knowledge of the group is in this direction so very fragmentary that even 

 in this case the possibility of any deductions and generalisations is entirely excluded. 

 The annexed Table has, accordingly, no other object than to render conspicuous the 

 comparative richness in Keratosa of the difierent localities visited by the Challenger, as 

 well as the depths from which they have been obtained. The depth (in fathoms) is 

 indicated by the figures in the columns, s.w. = shallow water. 



BATHYMETRICAL TABLE. 



Brazil. 



Eastern Coast 

 of Australia. 



w 



lanthella flabdliformis, Pallas, 



Spongelia spini/era, F. E. Schuke, 

 „ pallescens, 0. Schmitlt, 

 „ horrida, Selenka, 



Psammoclenia ramosum, Marsh., 

 „ vosmaeri, n. sp., 



,, /oUaceum, n. sp., 



Psammopemma densum. Marsh., 

 ,, porosum, n. sp., . 



Coseinodeniia confragosum^ n. sp. 

 ,, denticidatum, n. sp 



,, altum, n. sp., 



Euspongia officinalis, I.inn. , var. luhosa 



Uippospongia anomala, n. sp., 



,, mauritiana, Hyatt, 



Cacospcmgia levis, n. sp. , . . 

 ,, amorjiha, n. sp., . 



,, murrayi, n. sp., . 



„ vesictdifera, n. sp., 



,, procuvibens, n. sp., 



,, ^d^ndroides, a. sp., 

 ,, spinifera, n. sp., . 



,, tvherculata, n. sp., 



,, intermedia, n. s^., 



,, irregularis, n. sp., 



„ oligoceras, n. sp. , . 



„ compacta, n. sp., . 



„ collectrix, F. E. Schulze, 



Stelospangos longispin-us, Duch. and Midi 



Carteriospongia otahitica, Esper, 

 „ radiata, Hyatt, 



Luffaria variabilis, n. sp., . . 



Verongia hirsuta, Hyatt, . . 



,, tenuissima, Hyatt, 



28 



3S-40 

 38-48 



220 



60 



60-70 



400 



30-35 



7 



220 



38-40 



60-70 

 60-70 



28 



18 



18 

 12-20 



400 



400 



60-70 



(ZOOL. CHALL. EXP. PART XXXI. — 1884.) 



Hh 10 



