R.VDIOLARIA-I'HRACTASPIS, PLAdlACAXTHA, IT.KCTANIII.M, PI.KCTI ll'irOUA 179 



PHRACTASPIS PROTOTYPUS IIkl. 



(Chall. paji. 809 I'l. CXX.WII fig. 2.) 



1S9H February : ;")- S. 4^ K. 

 Jtuir: 19- X. (;;!' W. 

 July: ;!9- X. L>:i- W. 

 Scpl ember — Xoreinbei': Azores. 



Temperature: 22. i, mean of 7 obs., max. 28, min. l.S.r,. 

 Salinity: 35.77, mean of 5 obs., max. ;-5(5.,i:i, min. ?>'\A-i. 

 Plankton-type. Found in the easlern tropical Atlantic, the 

 Mediterranean, Indian and Pacilic. — N. ? 



PLAGIACANTHA ABIETINA R. riKRTw. 

 (OigMn. d. Radiol. PI. VII fig. 6—6 b.) 

 IS9,S X(iri-ml,er: 5;; X. nO' W.; 55 X. \-\r \V. 



Temperature: li lo 7.i. 

 Salinity: ?>k.-.» to :ii-.7:;. 



Plankton-type. Found in llie Ak^diterranean. My specimens 

 (iccnrred in Slyli- and Tricho-planlvlon intermingled. 



PLECTANIUM SIMPLEX Cl. 



Kongl. Sv. Ve(. Akad. Handl. Vol. XXXII n. '6 pag. o-> PL III fig. 3.) 



1.S9S July: 7S- X. 8' W (deep sea haul). 

 XdCi'uiber: 5(1 X. 'My \X . 



Temperature: 7..,. 

 Salinity: .)5. 

 Plankton-type. V 



PLECTOPHORA ARACHNOIDES (Clap. .^' Lachm.).' 



.I'lagierdiUlin iir. Etudes siirles inf. pag. 462 PI. XXII lig. 9.) 



ISO.S M,irvlr. 45 X. D) W :, 4U- X. 72 W. 

 April.: \W X. 5(i- W. 



O^iteiifcld's ilala used. 



