32 P. T. CLEVE. PLANKTON COLLECTED BY THE SWEDISH EXPEDITION TO SPITZBERGEN. 



Surfaee i 



Dalu. 



Lat. N. 



LoDg. 



Temp, 



Sal. 



Fq. 



Pl. 



Date. 



Lat. X. 



Long. 



Temp. 



Sal. 



Fq. 



Pl. 



10 VI 



71° 10' 



21° 31' E. 



6,71 



35,20 





c.s 



1 rx 



76° 2° 



13° 8'E. 



6,61 



35,13 



r 



S T 



28 VIII 



78° 23' 



10° 23' E. 



6,06 



34,94 





T 



2 IX 



75° 50' 



15° 32' E. 



5,52 



35,01 



+ 



ST 



29 VIII 



77° 38' 



11° 40' E. 



6 



34,89 





TS 



2 IX 



75° 24' 



16° 47' E. 



5,64 



35,12 



v 



ns) 



30 VIII 



77° 



8° 3'E. 



5,G5 



35,03 





S 



3 IX 



74° 42' 



16° 42' E. 



7,24 



35,17 



r 



T{S) 



30 VIII 



76° 45' 



8°45' E. 



5,34 



34,92 





.s 



4 IX 



73° 36' 



18° 50' E. 



7,06 



35,03 



T 



S (Ns) 



31 VIII 



76° 27' 



10°43' E 



5,35 



35,03 





.s 



6 IX 



70° 23' 



20° 32' E. 



9,37 



34,41 



r 



Tp (Ns) 



31 VIII 



76° 12' 



12°18'E. 



6,2« 



35,15 





.s 

















Deep-sea hauls: 



Date. 



Lat. N. 



Long. 



Depth. 



Fq. 



Pl. 



1 VIII 



76° 36' 



12°13'E. 



500—0 m. 



'/• 



TS 



27 VIII 



79° 58' 



9°35'E. 



400-0 » 



r 



CS 



1 IX 



75° 50' 



15°25'E. 



325-0 » 



r 



S 



Hahitat: Coasts of Scotland and Norway. Newfoundland Banks (Cl.). 



Plectanium (?) simplex Cl. N. sp. — Bars thin, cylindrical, each divided at the 

 distal end into three branches, connected by thin threads into a delicate polyhedral net- 

 work (Diam. 0,06 mm.). 



Pl. III, fig. 3. 



One single speoimen in tlie haul 29 — 30 VII. 



Lat. N. 78° 13'. Long. W. 2" 58'. 



2,600—0 ra. 



Polypetta liolostoma Cl. N. sp. — Shell spherical. Structure: triangulär alveoli 

 (1,5 in 0,01 mm.) separated by prominent fine crests. At each point, where these crests cross 

 each other, a short, small thorn arises. On the surfaee of the shell are scattered without 

 order a number of narrow, structure-less, straight or slightly curved tubes, longer around 

 the proboscis, where they are three to four times as long as the diameter of the shell. 

 Proboscis a cylindrical tube, somewhat shorter than the diameter of the shell. The mouth 

 with a narrow, undivided rim. 



Diam. 0,09 to 0,i mm. 

 Pl. III, fig. 4 a; b structure. 



Deep-sea haul: 29—30 VII. Lat. N. 78' 13'. Lat. W. 2° 58'. — 2,600-0 m. r. 

 This species agrees in all respects, except the mouth, with Polypetta tabulata Hkl. from the abysmal 

 depth of the Indian Ocean. 



Pterocorys irregiilaris Cl. N. sp. — Cephalis nearly spherical, with one apical and 

 one lateral horn. Its pores small and indistinct. Thorax with three strong, downwards 

 directed horns, as long as the breadth of the thorax. Pores rounded, as broad as the 

 bars, variable in size (0, 002 to 0,oo6 mm. in diameter) and scattered without order. The 

 upper part of the thorax provided with some few spines. Abdomen not distinctly sepa- 

 rated from the thorax. Its pores similar to those of the thorax. 



