24 
THE VOYAGE OF H.M.S. CHALLENGER. 
small, flagella capillary. Ocecia small, cucullate, perforated with one or two transverse 
rows of punctures. A row of small sessile avicularia in front. 
Habitat. — Station 188, lat. 9° 59' S., long. 139° 42' E., 28 fathoms, green mud. 
[Mediterranean? Savigny ; Moreton Bay, Yoy. of Rattles.; Cape Verde Islands, Miss 
Gatty.] 
(3) Scrupocellaria ornithorhynchus, Wyv. Thoms, (sp.) (PI. XI. fig. 6). 
Crisia ornithorhynchus, Wyv. Thoms. 
(?) Scrupocellaria clypeata, Haswell, Proc. Linn. Soc. New South Wales, 1880, p. 37, pi. i. fig. 6. 
Character. — Zoarium small, branches very slender, divaricate. Zooecia rather 
distant. Aperture oval, border thin and smooth ; two or three slender, pointed marginal 
spines on the outer side and one on the inner. Fornix with a wide peduncle, the lamina 
lobate, rounded below and produced into a more or less pointed lobe above. Vibracularia 
small, flagella minute. 
Habitat . — Off Honoruru, Sandwich Islands, 20 to 40 fathoms. 
(4) Scrupocellaria pilosa, Audouin (sp.) (PI. XI. fig. 7). 
Crisia pilosa, Savigny, Egypte, pi. xii. fig. 1, Audouin, Expl. i, p. 241. 
Character . — Zoarium about 1 inch high, tufted, rather spreading, branches 
slender. Zooecia elongated. Aperture small, oval ; border thin but wide at bottom, not 
granulated. Three or four marginal spines on the outer side and at the top, and two on the 
inner side. Fornix with the lamina rounded below and tongue-shaped above, longer than 
the aperture. Vibraculum small and upright. 
Habitat. — Station 135a and c, off Inaccessible and Nightingale Islands, 75 and 110 
fathoms. 
[Mediterranean ? Savigny.] 
Notwithstanding the different form of the fornix in the present species, and in that 
figured by Savigny, the other characters, and especially the length and slenderness of the 
zooecia, and the number and length of the delicate marginal spines, leave little room 
for doubt that the two forms are identical or very closely allied. 
In this form radical tubes may sometimes, though rarely, be seen extending from one 
branch to another, but not directly transversely as in Canda. 
(5) Scrupocellaria securifera, n. sp. (PI. XI. fig. 2). 
Character. — Zoarium irregularly dichotomous, rather straggling. Aperture large, 
margin rather thick, a strong, short, conical, oral spine on each side. Fornix hatchet- 
shaped, expanding towards the outer end, which becomes closely applied to or eonnale 
