BIHANG TILL K. SV. VET.-AKAD. HANDL. BAND. 5. N:O 19. 15 
rent, with two sorts of calcareous deposits: small spicula, curved 
in the form of a c; and large, straight, spinous ones. 
Colour in alcohol, light gray. 
Length, about 130 mm. 
Breadth, about 70 mm. 
Station 299, 2160 fathoms, numerous specimens. 
Station 157, 1950 fathoms, one specimen. 
The individual from station 157 differs from the others by 
its gigantic size, 180 mm. by 110; processes of the back com- 
paratively small. 
Elpidia verrucosa sp. nov. 
Plate' II; Figs 26-28. 
Body almost ovate, nearly twice as long as broad. Mouth 
anterior, terminal; anus posterior, slightly dorsal. Tentacles of 
apparently equal size, (five are torn off in the only specimen, 
existing in the collection) their terminal part bearing small, 
digitate, retractile processes. Pedicels rather large, eigth to nine 
along each side of the ventral surface, (most of them torn off); 
the anterior part of the ventral surface destitute of pedicels. 
Bivium with two pairs of processes in the anterior part of the 
body; being torn off, their length and appearance are unknown. 
Integument highly brittle and hard, with numerous, rather large, 
pyramidal papille, crowded especially on the back, each papilla 
containing a calcareous deposit, composed of four long, spinous 
arcuate arms, direeted towards the inside of the body, and one or 
two central large and straight processes, directed outwards from 
the body. 
Colour in alcohol, light violet. 
Length, about 52 mm. 
Breadth, about 28 mm. 
Station 299, 2160 fathoms, one specimen. 
Elpidia nana sp. nov. 
Plate II, Figs. 20- 22. 
Body elongated, from twice and a half to thrice as long as 
broad. Mouth anterior, terminal, slightly ventral; anus posterior, 
subdorsal. Tentacles of equal size; their terminal part bearing 
