40 
THE VOYAGE OF H.M.S. CHALLENGEE. 
The locality from which the present species was obtained is in the neighbourhood of 
the Azores, where it was dredged from a depth of 1000 fathoms. 
Cryptolaria abyssicola, n. sp. (PI. XVIII. figs. 2, 2a). 
Trophosome. — Hydrocaulus much and very irregularly branched, branches rather 
slender, flaccid. Hydrothecse disposed on all sides of the stem. 
Gonosome. — Gonangia springing at intervals along the stem, and forming long, 
tubular receptacles, ventricose towards the base, and then tapering to their point of 
attachment, and terminating distally in a truncated summit which is occupied by the 
wide circular orifice. 
Locality. — Station 160, south of Australia; lat. 42° 42' S., long. 134° 10' E.; depth, 
2600 fathoms. 
The vast depth from which Cryptolaria abyssicola has been dredged gives it a special 
interest, which is greatly enhanced by the fact that it affords one of the very few 
instances as yet known in which the gonosome of Cryptolaria has been detected. It was 
associated with Halisiphonia mcgalotheca (p. 31) brought up in the same haul. 
The scattered instead of distichous disposition of the hydrothecse is a peculiar and 
exceptional character. 
The specimen is only fragmentary, and no exact assertion can be made as to the size 
which the species may naturally attain. The largest fragments preserved measure about 
two inches in height. 
Cryptolaria flabellum, n. sp. (PI. XIX. figs. 1, la). 
Trophosome. — Colony attaining a height of about one inch ; hydrocaulus rigid, rooted 
by a thick disc-like expansion, ramification in a single plane, and irregular. Hydrothecse 
alternate, distichous, very long and slender. 
Gonosome not known. 
Locality. — Station 24, off Culebra Island, West Indies ; depth, 390 fathoms. 
Cryptolaria flabellum is an unusually well-marked form. Its long curved hydrothecse 
resemble slender lateral branches, while its rigid habit, and the fact of the ramification 
being all in one and the same plane, call to mind the general aspect of certain Gorgonian 
Corals. 
Cryptolaria pulchella, n. sp. (PI. XIX. figs. 2, 2a). 
Trophosome. — Colony attaining a height of nearly three inches, main stem irregularly 
branched, branches carrying regular, pinnately disposed, alternate ramuli. Hydrothecse 
alternate, very regularly distichous. 
