KONGL. sv. VET. AKADEMIENS HANDLINGAR. BAND 34. n:o I. 5 



Oncaea subtilis Giesbb. 



Plate III. Fig. I— 11. 



Male. Branches of the furca b h as lon»- as broad, closely approximate; anal-joinl 

 as long as broad. R. i. of the feet not ending in conical processes. 



Total length: 0,4 (of the fcrnale 0,6); length of cephalothorax 0,29, of abdoincn 0,1, 

 of furca 0,02; breadth of cephalothorax 0,i millim. 



This species has been found in the eastern Atlantic from 32° S. to 52° N. The 

 male was found together with numerous fernalcs in a colleetion from the vicinity oi 

 Uschant. 



II. RADIOLARIA. 



Acanthosphaera trichophora. N Sp. 



Plate V. Fig. 3. 



Shell thin-walled, with irregular, polygonal meshes, 4 on the radius. liars thiu, 

 thread-like. Spines few, hair-like, fiexuose, twice as long as the radius. 

 Diameter of the shell 0,cm. Meshes 0,oo4 to 0,oi2 millim. 

 Atlantic, November 1898, 50° N. 33° W. 



Actinomma(J) Sol N. Sp. 



Plate V. Fig. 2. 



Radial proportion of the three shells 1 : 2,5 : 9. Cortical shell thick-walled, with 

 circular, regular, six-lobed pores, as broad as the bars. At each nodal-point is a bristlc- 

 like spine, half as long as the radius, thus every pore surrounded by a corona of six 

 bristles. 



Diameter of the outer shell 0,09, of the cellules 0,ooi millim. 



Found in Januari/ 1899 at 45° N. 49° W. in styli- and tricho-plankton intermingled. 

 Tern perature 12. Salinity 35,54 p. m. 



Owing to the thickness of the cortical shell, the interiör shells were visible merely 

 as faint shadows, so I am not quite conviuced whether the shells are 3 or 2. If the 

 latter be the case, the species belongs lo Haliomma and is then nearest akin to H. horrida. 



