KONGL. SV. VET. AKADEMIENS HANDLINGAR. BAND 32. wn:o 3. 31 
Peridium (?) intricatum Cy. N. sp. Shell irregularly polyhedral, of a very loose 
and irregular frame-work with large, polygonal meshes, the apical being the largest. Basal 
plate with three large meshes of about the same size. Horn short. 
Pl. II, fig. 8 a and & in different foci. 
Diameter of the shell 0,08 mm. 
Deep-sea haul: 29—30 VII. Lat. N. 78°13’. Long. W. 2°58’. 2,600—0 m. One single specimen. 
P. (?) laxum Cr. N. sp. Shell irregularly polyhedral of a very loose frame-work, 
with large polygonal and irregular meshes, the apical being the largest. Basal plate with 
two cardinal and two jugular meshes of about the same size. Horn a fine bristle, half 
as long as the shell. 
Pl. Il, fig. 9 a, & (in different foci). 
Diam. of the shell 0,05 mm. 
Deep-sea haul: 5, IX. Lat. N. 71°50’. Long. E. 19° 2’. 230—0 m. One single specimen. 
P. (?) minutum Cr. N. sp. By this name I denote provisionally a very small shell, 
which perhaps might be the primordial shell of Dictyophimus gracilipes or Acanthocorys 
umbellifera, to which I have not yet succeeded in finding transitional forms. It is repre- 
sented on the PI. II, fig. 1 a, 6, c, the two latter being the same shell in different foci. 
— The diameter of the shell 0,03 to 0,04 mm. 
Deep-sea hauls: 
Date. Lat. N. Long. Depth. Fq. | Pl. 
, 238—80 VIT!| T8138" 2 58’ W. | 2,600—2 m. , | C8 
| vir | 750°) «9°35'B. | 400-0» | > Cs 
Phorticium pylonium Hxi. To this variable and cosmopolitan species I refer the 
shell figured on the PI. III, fig. 2 a, b, c. The fig. d represents the primordial shell, 
which occurs isolated in the deep-sea gatherings and bears a strong resemblance to Haliomma 
aequorea Ens. (Microg. XIX, 51 from Aegina). 
Deep-sea hauls: 
Date. Lat. N. Long. Depth. Fg. Pi. 
29—80 VII} 78°13’ | 2°58’ W. | 2,600—0 m. r SC 
1 VIII | 76°36’ | 12°18’ E. 500—O > ? TS 
27 Vill | 79°58’ | 9°35’ KE. 400—0O » . cs 
1 IX 75° 50’ | 15° 25’ E. 325—0 > r 8 
5 IX 71°50’ | 19 2’. 230—0 » r 8 
Plectophora arachnoides (Crap. & Lacum.) Hx. In this species I include also 
Plagiacantha arachnoides (Cuar. & Lacum.) Hxu., which represents the young state. The 
net-work combining the spines is subject to great variation. 
