DINOI l.ACKI.r.AT.K — PROTOt:KI!.\lir.M, I'VROl'HAr.US -J/ / 



PROTOCERATIUM RETICULATUM Clap, i^i I.aciim.^ 

 (Sciiiri I). I'cnilinern tl. riankton expcd. I'l. VII lig. 28.) 



I SOS JaniKifi/: 35-^ N. 74" W. 



Fcbraa/y: 26°— 34° N. 74^ W. 



August: 69° N. 53^ "VV., common. 



Si'ptciiiber: 60° N. 4- W., rare. 



Ortohrr: r>7° N. 27^ W. to 60° N. 6^ W.. rare. 



Xnrnnhr/-: V2' N. 61- W.: 60°— 63° N. 4°— 16° \\. 



Temperature: at Disco (wliere coninioii) (i.s, in llie Irminger 

 rSea (where rarei lO.i, mean of 7 obs., max. 11 -i. min. 6..-,; in the 

 N\V. of N. America (rare) 18. n, mean of 4 obs., max. 21°, min. 16. l-. 



Salinity: 32.ii, i Disco); 3o..t.i Jrminger Sea, max. 35. is, min. 

 35.19). 



Plankton- type. The ab.sence of ihi.s species in the tropical 

 and temi)oratc Atlantic, its abundance olT the W. Greenland and its 

 scarcity in the Irminger Sea point to the conclusion that it is an 

 arctic or northern neritic species, that drifts with the southward Ame- 

 rican Current and into the Irminger Sea. — Schkouek mentions it 

 t'l'oiu Xaples. — As. 



PYROPHACUS HOROLOGIUM Sn i.\.- 

 ,1). Or-, a. Iiifiis. i'l. XXIV, XXV iig. 1.^ 



1897 JJpccihIjc/' and 



1898 January: 20° N. 18 W. to 16 S. :}7 W.; 12 — Ki • N. 50^ 



—48° W. 



Fchj-uarij: 6—5° S. 10"^— 0' K.; Caribbean Sea; 21° N. 74° W. 



Marrh:\r S. 4" W. to 7° N. 17—22^ W.; 23° N. 28° W.; 

 25' N. 16' \V.; 10° N. 53° W. to 18' X. 46 W.; Carib- 

 bean Sea. 



April: area between 10^ N. 53 W., Harbados, 22 N. \1 W . 

 and 18- X. 46° W.; Azores. 



Mail: 11 X. 52 W. to 29 X. 39 \V.; A/ores; 48 N. 33 W. 



' Ostenfelds data iisod. 



- Ostenfold's and Minrav's \- Wliillinu's data used. 



