1 8*^ i;AiH(»r>.\KiA — si'ii-!ucyhtis, spoxgastkk. si'<».\(i(»ins<;L s 



SPIROCYRTIS SCALARIS Hkl. 



(Chall. pag. 1509 I 'I. LXXVI tig. U. 

 ISUS J),r,'inl>,T: 18-'X. iST W. 



Temperature: 2().s. 

 Salinity: .'Ji.ss. 



Plankton-type. Konml in llic central I'acilir, ahysimil. My 

 .<|i(MMineii was t'nniK] in Slyli- mikI Desmo-planktoii iiiterminp:le(i. 



SPONGASTER TETRAS Khb. 

 (Em;. Abb. .1. Berl. Akad. 1872 I'l. VI :'.. \\g. 8.) 



IS<.)S Fi'hriKirii: 15 N. IV W. 



SrpU'iiihcr: 24" X. 74-" \V. 



X<trrn,hi-i-: (>' S. ?A W.; W) N. 58^ W.; 22 X. 5:5 \V.; \1 

 X. 11 w. 

 I Sill) April: 28"— :J4^ X. 75" 71- W. 



Jiiih': H)- S. 0- W. to H S. 20 W. 



Temperature: 2ki;, mean of K) ohs., max. 28, niin. 10. 



Salinity: iJfi.d.-., mean of \ I ol»s., nuix. .■)().r,i. niin. 1)5. -ji'. 



Plankton-type. I'ound in the Atlantic-. Indian and I'arilic 



— b. 



SPONGODISCUS MEDITERRANEUS Hkl. 

 lAfoiiogr. pag. Mil I'l. \\\ \\<j.. 14, V).) 

 IS<»H .IdiiiKirii: \h N. IV W. 

 Aiifinsi: \\\ N. iSl W. 

 J)rr<'i,ihr/-: 25' X. 52 A\'. 



Temperature: 2i lo 27. 



Salinity: ;)i. in lo ;)7.it. 



Plankton-type, l-'ound in the .Mcdilerranoan. — I). 



SPONGOSPHiERA POLYACANTHA J. Ali ll. 



(Abb. (L IJcrb Akad. ISoS pag. S2 \'\. !V li-;. 1 -i-.) 

 1S<IS Xorriiihcr: .\/oi-('S. 



Temperature: 18..-,. 



Plankton-type. Xoted from the ^ledilerrancan and the Cana- 

 ries. — .s. y 



