32 P. T. CLEVE. PLANKTON COLLECTED BY THE SWEDISH EXPEDITION TO SPITZBERGEN. 
Surface: 
| Date. | Lat. N. ; Long. Temp. Sal. Fq. Pl. Date. | Lat. N. | Long. Temp. Sal. Fq. Pi. 
| 
10Vi | 71°40’ | 21°31’ FB. 6,71 35,20 r cs 1 IX 762? |18 8’ E| 6,61 35,13 r ST 
28 VIII | 78°23’ | 10°23’ E.) 6,06 84,94 a T 2 1X 75° 50’ | 15°32’ BE) 5,52 35,01 + ST 
29 VIIL! 77°38’ | 11°40'E., 6 34,89 r TS 2 1X 75° 24" |16°47'E., 5,64 35,12 r T (8) 
30 vin | 77° 8 3 EB, 5,65 35,08 r S 3 IX 74 42’ | 16°42’ EB.) 7,24 35,17 r T (8) 
30 VIII | 76°45’ | 845'E.) 5,34 34,92 r 8 4 1X 73° 36’ |18°50'E.| 7,06 35,03 r S (Ns) 
31 VIIL; 76°27’ | 10°43'E| 5,35 35,03 1 8 6 IX 70° 23’ | 20°82’ B.| 9,37 34,41 r Tp (Ns) 
, 81 VIIT, 76°12" | 12°18’ E| 6,26 35,15 r 8 * 
Deep-sea hauls: 
Date. Lat. N. Long. Depth. Fq. Pi. | 
1 vilt | 76°36’ | 12°13’E. | 500—0 m. r TS 
27 VIIT | 79°58' | 9°35'E. | 400—0 » ” cs 
13x 75° 50’ | 15°25’ EB. | 825-0 > r s | 
Habitat: Coasts of Scotland and Norway. Newfoundland Banks (CL.). 
Plectanium (?) simplex Cx. 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. Ill, fig. 3. 
One single specimen in the haul 29—30 VII. Lat. N. 78°13’. Long. W. 2° 58’. — 2,600—O m. 
Polypetta holostoma Cr. N. sp. — Shell spherical. Structure: triangular 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 surface 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 0,1 mm. 
Pl. Ill, fig. 4 a; & structure. 
Deep-sea haul: 29—30 VII. Lat. N. 78°13’. Lat. W. 2°58’. — 2,600—0 m. +. 
This species agrees in all respects, except the mouth, with Polypetta tabulata HK. from the abysmal 
depth of the Indian Ocean. 
Pterocorys irregularis Cr. 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 0,006 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. 
