4 f 



6 



THE SPONGES. 









T" 



• i -i 





Depth 



Character 





Serial Number. 



Latitude. 



Longitude. 

 West. 



in 

 Fath- 

 oms. 



of 



Bottom. 



Species taken. 





o 



/ // 



o 



1 



// 







3400 



S. 



36 



86 



46 







1322 



It. ffy. glob. Oz. 



Thenea fenestrates O. Schm. 



3404 



S. 1 



3 



89 



28 







385 



R. 



Euplectella, sp. Regadrella delicata, sp. nov. 



Hexactinella ventilabrum Carter (sp?). 

 Poeciltastra tricornis, sp. nov. Penares folia- 



formis, sp. nov. Oceanapia baeillifera, sp. 



nov. 

 Hexactinella labyrinthica, sp. nov. 



3405 



S. 57 



89 



38 







53 



P. Co. Sh. 



















Poeciltastra cribraria, sp. nov. 



















Polymastia maeandria, sp. nov. Petrosiet. 



















variabilis crassa, subsp. nov. Petrosia 



















similis densissima, subsp. nov. 



















Tylodesma vestibularis, sp. nov. Iophon 



















lamella, sp. nov. Iophon lamella indivisus, 



















subsp. nov. Iophon indentatus, sp. nov. 



















Auletia dendrophora, sp. nov. Tylodesma alba, 



















sp. nov. 



3406 



S. 



16 



90 



21 



30 



551 R. 



Hexactinella tubulosa F. E. Sch.(sp ?) Ilex- 



















actinella ventilabrum Carter (sp ?) Sclero- 



















thamnopsis compressa, gen. et sp. nov. 



3413 



N. 2 



34 



92 



6 



1360 



glob. Oz. dk. Sp. 



Thenea fenestr a ta O. Schm. 



3414 



N. 10 



14 



96 



28 







2232 



gn. M. 



Ilyalonema pedunculalum, sp. nov. Ilyalon- 

 ema, sp. Caulophacus, sp. 



Thenea lamell/formis, sp. nov. Thenea piri- 

 formis 3 n. sp. 



3415 



N. 14 



46 



98 



40 







1879 



br. M. glob. Oz. 



Ilyalonema bianchoratum, sp. nov. 

 Thenea echineita, sp. nov. 



3425 



N. 21 



19 



106 



24 







680 



gn. M. and S. 



Farrea occa claviformis, snbsp. nov. Farrea, sp. 



3430 



N. 23 



16 



107 



31 







852 



bk. S. 



Farrea mexicana, sp. nov. 



Station 



















recorded as 



















"Acapulco." 





■ 













P etchy chalina acapulcensis, sp. nov. 



Station 



















recorded as 



















" Panama." 

















Gellius perforatus, sp. nov. 



17 (Cruise of 



N. 



50 



137 54 







2463 



It. y- gy. glob. 





"Albatross " 















ooze 





in 1900.) 

















Hyalonemet pateriferum, sp. nov. 





In addition to the discovery of new forms, some results of general bio- 

 logical interest have accrued from the study of the collection, and are dis- 

 cussed or stated under the respective species concerned. For convenience 

 of reference the more important of these facts may be here classified. 



- 



Remarkable forms. Ilyalonema pedimculatum, p. 15, is noteworthy for the 

 peculiar pedunculate form of body ; Sclerolhamnopsis eompressa, p. 80, for the 

 shrub-like habitus in which it resembles the hitherto unique Sclerothamnus 

 clausii Marsh. ; Regadrella delicata, p. 32, for the character of the sieve-plate 

 region, which may be construed as representing a simpler (although not 

 necessarily a more primitive) phylogenetic condition than the otherwise 

 closely similar Regadrella phoenix O. Schm. 



Distribution and Habitat. Thenea fenestr at a O. Schm., p. 87, hitherto known 

 only from the Atlantic and Caribbean Sea, is now recorded for the 



