90 
THE VOYAGE OF H.M.S. CHALLENGER. 
(4) Salicornaria divaricata, n. sp. (woodcut fig. 8). 
Character.— Zoarium slender, growth divaricate, 1 to 2 inches high ; articulations 
nodular. Areas hexagonal, elongate ; surface smooth or very faintly granular ; interior 
ridges elevated, not united below nor above. Orifice crescentic, with a prominent lower lip. 
Operculum crescentic, rounded above, with 
strongly bordered angular apparent foramina 
0 //, 004 x ‘0025. Avicularia vicarious ; man- 
dibles spear-shaped, pointed, sometimes acicular, 
0"-008 x -005. 
Habitat. — Station 163a, off Twofold Bay, 150 
fathoms, green mud. 
[Port Philip, Wilson.] 
I had not recognised the distinction of this 
species in time to insert a figure in the plate and 
have therefore introduced it in the accompanying 
woodcut. It is distinguished readily enough by 
its general habit when good specimens are avail- 
able. The operculum is comparatively small, and the avicularian mandible is in some cases 
acicular, in others more lanceolate. It belongs to the same class of mandibles as those 
of Salicornaria malvinensis and Salicornaria dubia. 
Fig. 8. — Salicornaria divaricata. 
(5) Salicornaria bicornis, Busk (PI. XXXIII. fig. 9). 
Salicornaria tenuirostris, var. a. bicornis, Brit. Mus. Cat., vol. i. p. 17, pi. lxiii. fig. 4. 
(1) Cellaria tenuirostris, Macgilliv., Nat. Hist. Viet., Dec. v., p. 49, pi. xlix. fig. 3c. 
Character. — Zoarium 1 to 2 inches high, slender, 
dichotomous; internodes curved ; joints nodular ; numerous 
clasping filaments arising from the front of the zooecia. 
Areas hexagonal ; surface smooth ; lateral ridges strongly 
developed and usually terminating above in a projecting 
angle. Orifice crescentic ; lower lip very prominent in the 
middle, with a depression below it. Operculum crescentic, 
with the lower angles produced, acute, 0 //, 0045 x ’003 
Avicularia intercalated ?, with a projecting rostrum above 
and a triangular mandible, 0"’0055 x '0055 with an acute 
incurved apex and short median columella. 
Habitat. — Station 163a, off Twofold Bay, 150 fathoms, 
green mud. 
[Bass Strait, 45 fathoms, Voy. of Rattles.; Tasmania, 
Hooker.] 
