KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 32. N:0 3. 



29 



Cromyomma zoiiaster (Ehb). Thick walled and obscure, 0,ii mm. in diameter, 

 densely covered with thin, flexible, radial spines, as long as the radius. Pores rounded 

 0,005 to 0,007 mm. in diameter; bars 0,oo3 to 0,005 mm. broad. 



Deep-sea haul: 5. IX. Lat. N. 71° 60'. Loiig. B. 19° 2'. Fq., )t. Pl. ,S. 



Habitat: Greeiilaod, abysmal. 



Dictyocephalus sp. In one of the deep-sea hauls was found one specimen (Pl. II, 

 fig. 1) which perhaps may be D. obtusus or Lophophcena ohtusa Ehb. Micrg. XXII, f. 40. 



DictyopMmus gracilipes Bail. Cephalis hemispherical, with a single stout horn of 

 variable length. Pores rounded. Thorax a three-sided smooth pyramide, with three 

 decurrent ribs, prolonged in long, smooth three-sided feet. Pores rounded, irregular, 

 decreasing in size towards the cephalis. 



Cephalis 0, 02 mm. long; horu 0, 01 — 0,05 mm. Thorax 0,06 mm. long and 0,07 mm. broad. Pl. II, fig. 2. 



Deep-sea hauls: 



Date. i Lut. N. 



Long. 



29—30 VII 

 1 VIII 

 27 VIII 

 1 IX 



78° 13' 

 76° 36' 

 79=58' 

 75° 50' 



2°58'W. 

 12° 13' E. 



9° 35' E. 

 15°25'E. 



Depth. 



2,600—0 m. 

 500-0 » 

 400—0 » 

 3-25-0 » 



Fq. 



Pl. 



CS 



TS 



CS 



S 



Habitat: Kamtschatka and the north Pacific Ocean. 



Eiiphysetta Nathofstii Cl, N. sp. Shell ovate, with a single spine on the apical 



pole. Structure double: coarser longitudinal (9 in 0,ot mm.) and transverse (8 to 9 in 



0,01 mm.) faint ribs crossing each other at right angles and, besides, very small puncta 



arranged in obliquely decussating i^ows (17 in 0, 01 mm.). Peristome short and wide, 



with four slender articulate teeth, three of the same length but the fourth much longer. 



From the middle of the fourth tooht there issues in the middle a small spine. 



Length 0,06 mm. Breadth 0,04, mm. Pl. II, fig. 3. 



Deep-sea hanl: 29—30 VII. Lat. N. 78° 13'. Long. W. 2' 58'. Fq. rr. Depth 2,600-0 m. 



Of the genns Euphysetta three speoies only are known, all from the tropical and southern Atlantic. 



Eusceninm tricolpium Hkl. 



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

 Habitat: Central Pacific Ocean, abysmal (Hkl.). — Northern Atlantic, between Shetlands and Norway, 

 surface (March 1898 Cl.). 



Gazelletta sp. 



Fragments of the feet (smooth) vvere found in the deep-sea hanl: 29 — 30 VII. Lat. N. 78° 13'. Long. 

 W. 2° 58'. Depth 2,600—0 m. 



Heliosphaeva actinota Hkl. 



One small specimen (Diam. 0,06 mm. Pores three on the radius, 0, 013 mm. broad) in the deep-sea haul 

 29—30 VII. Lat. N. 78° 13'. Long. W. 2° 58'. 2,600-0 m. 

 Habitat: Mediterranean, Canaries, Azores (HKL.). 



