BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND. D. N:O 19. 9 
COryodora !) gen. nov. 
Back highly convex; ventral surface almost flat. Mouth 
anterior, subventral; anus posterior, terminal, subdorsal. 'Ten- 
tacles fifteen. "The lateral ambulacra of the trivium with large, 
slightly retractile pedicels, disposed in a single row.all along 
each side of the ventral surface. The odd ambulacrum naked. 
Bivium with slender, fexible, not retractile processes, disposed 
in a single row all along each of its ambulacra. Integument 
spongy without calcareous deposits. 
Cryodora spongiosa sp. nov. 
Plate I, Figs. 15—16. 
Body elongated, almost cylindrical and of equal breadth 
throughout, about four times as long as broad. Tentacles of al- 
most equal size; their terminal part large and discoidal, destitute 
of visible processes (the terminal part of some evidently torn 
off). Pedicels fourteen along the left side of the ventral surface, 
and fifteen along the right one, the hindmost very small and 
indistinct. Processes of the bivium eighteen along the right, 
and seventeen along the left ambulacrum, rather long, very soft 
and flexible; the four anterior on each side not in a row after 
each other, but two and two, side by side. Integument very 
thick, soft and spongy. 
Colour in alcohol, light sea-green; top of the tentacles 
light brownish. 
Length, 135 mm. 
Breadth, 35 mm. 
Station 235, 365 fathoms, one specimen. 
Letmogone”?) gen. nov. 
Back highly convex; ventral surface slightly so. Mouth 
anterior, terminal, subventral; anus posterior, terminal, slightly 
dorsal. ”Tentacles fifteen. The lateral ambulacra of the trivium 
1) zovos, cold. 
2) Aattrua, depths of the sea. 
