KONGL. SV. VET. AKADEMIENS HANDLINGAE. BAND 32. N:0 3. 33 



Length of oephalis 0,03, of thorax 0,07 inm., of abdomeu 0,04 mm. Breadth of thorax 0,07 mm., of 

 abdoraen 0,08 mm. 



Pl. IV, %. 1. 



The iiearest allied form seems to be P. columba. 



Oiie speoiraeu in the haul 29—30 VII. Lat. N. 78' 13'. Long. W. 2° 58'. — 2,600—0 m. 



Hahitat: Between Shetlaiuls and Norway, surface, March 1898. 



Sagenoscena peiiicillata Hkl. — Agrees with the description and figures in HiECKEL's 

 monograph Avith the exception that the radial rods have the same thickness as the tan- 

 gential bars and are shorter than these, characteristics so trifling that I do not consider 

 them sufficient for the distinction of a variety. 



This species, known from the abysmal depths of the Antarctie Ocean, was found in fragments in the haul 

 29—30 VII. Lat. N. 78° 13'. Long. W. 2° 68'. — 2,600-0 m. 



Sethocoims galea Ci,. N. sp. — Shell cainpanulate or hemispherical, as long as 

 broad (0, 12 mm.), with rudimentary cephalis, not distinctly separated from the thorax. 

 One apical spine and several small spines on the thorax. Pores irregularly polygonal, 

 increasing in size from the apex, the largest 0, 02 mm. in diameter. 



Pl. IV, fig. 3. 



Some few specimens in the haul 29 — 30 VII. Lat. N. 78° 13'. Long. W. 2° 58'. — 2,600—0 m. 



Setlioconus tabiilatxis (Ehb.) Hkl. 



Cephalis 0,oi3 mm. long. Thorax in length 0,06 nira., in breadth 0,046 ram. Largest pores 0,008 mm. 

 in diameter. Cephalis with one delicate horn and several small bristles. 



Pl. IV, fig. 2. 



This speeies found by Ehrenberg in the abysmal depths of the Caribbean sea and by the Challenger 

 Expedition in the abysmal depths between Asoension and Sierra Leone was found in the hau! the 29 — 30 VII. 

 Lat. N. 78° 13'. Loiig. VV. 2° 58'. — 2,600—0 m. 



Setliopliormis sp. 



A fragment of a species resembling S. rotula Hkl. was found in the haul 29 — 30 VII. Lat. N. 78° 13'. 

 Long. W. 2° 58'. — 2,600 — m. 



Stichopiliiiiu davisiauum (Ehb.). — Pl. IV, fig. 6. 



Several specimens in the deep sea hauls 29 — 30 VII. Lat. N. 78° 13'. Long. VV. 2° 58'. — 2,600 — m. 

 and 1 IX. Lat. N. 75° 60'. Long. E. 15° 25'. — 326-0 m. 

 Habitat: Greenland, abysmal. 



Theocalyptra cornuta Bail. 



Length of ceplialis 0,02, of thorax O, os, of abdomen 0, 01 mm. Diameter of the opening 0, 14 mm. Diam. 

 of the largest pores 0, 014 mm. 



Deep-sea hauls: 



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



27 VILL » » 79° 58'. » E. 9° 35'. » 400-0 » » r. 



1 IX » » 75°'50'. » s> 15° 25'. » 325-0 » » r. 



Habitat: Kamtschatka (BaIL.), Greenland (Ehb.). 



Theocorys borealis Cl. N. sp. — Cephalis hemisperical, with a short triangulär 

 horn and large, irregular, rounded pores. Thorax pear-shaped, with regular, circular 



K. Sv. Vet. Akaa. Handl. Band 32. N:r 3. 5 



