studies on marine Ostracods 365 



vvlule, on tlie other liaiicl, in the other samples it was not found at all or only very sparsely. 

 At the last-mentioned station, for instance, no specimen was found in the samples from 28 

 to 20 m. and 10 — m., only a few individuals were caught in the sample from 28 — m. ; in 

 the sample from the surface, on the other hand, a very great many individuals (cc) were found. 



Does planktonic copulation occur in other species of this geniis besides Ph. (Ph.) globosat Other apecie^- of iiu. 



No investigations in this direction have as yet been carried out, but it seems rather =''""«• 



probable that this question is to be answered in the affirmative. This assumption is supported 

 partly by the fact that a number of other species of this genus have been found in the plankton, 

 partly by the fact that some of the other species of this genus are characterized by the circum- 

 stance that the females with eggs in the brood chamber have the long natatory bristles of the 

 second antenna broken in the same way as in Ph. (Ph.) globosa. 



The following species have been caught in the plankton: (No information is to be found 

 as to whether females of these species have been found together with the males,) 



Ph. (Ph.) Lilljeborgi: 



The following finds of this species are given in the plankton tables published by the 

 ,,Conseil permanent":* 



1903: 



May: N. 2, lat. 61" 17' N., long. 3" 22' E.; depth to the bottom, 380 m. 

 22. v., 10 ii p. 111. — 12 ii p. 111. 

 m. c. 

 100 m. — „ c. 



June: N. 24, lat. 67" 11' N., long. 10" 26' E.; depth to the bottom, 223 m. 

 1. VI., 10 'i 15 p. m. — 111' 30 p. m. 

 m. -f 

 25 m. — ,, — 

 100 „ — „ — 



August: N. 2, lat. 61" 22' N., long. 3" 08' E.; depth to the bottom, 380 m. 

 9. VIII., 6 ii 10 p. 111. 



m. — 

 25 m. — „ + 

 50 „ — 30 ., r. 

 200 „ — 10(1 „ — 

 1910: 



At Anholt, lat. 56« 46' N., long. 11" 51' E. (There is no information as to depth, etc.) 

 May: 1. Y. rr. 

 July: 1. VII. rr. 

 August: 15. VIII. rr. 

 November: 15. XI. rr. 



* This specios is also sUiti'il lo liave been foiHHl al tlu' stalioii .Sf. 8 of I lie ..Consoil p o r ni a n o n t". lat. 

 61" ;W N,, long. 3''0:J'E., al a deptli nt :!7.5 ni., iS. \'III. I"J1)". 'I'liis statcnu'nl, liowovii-, ik-arly refi-rs to a luiltoni find. 



