150 
THE VOYAGE OF H.M.S. CHALLENGER. 
(1) Escharoides occlusa, n. sp. (Pl. XXI. fig. 8). 
Character. — Zoarium thick, irregularly branched in one plane. Branches varying 
in breadth from 0"'25 to *1 with from 5 to 8 zooecia in the width. Zooecia distinct, 
and open towards the ends of the branches or lobes ; in the older portions much 
over-grown with a porcellanous accretion by which the orifice is completely obliterated. 
The younger zooecia ovate, broad, surface uneven, widely punctured. Orifice (primary) 
arcuate with a nearly straight and entire lower lip. or suborbicular ; afterwards the lower 
border becomes sinuate and the peristome much thickened, and on one side of the 
shallow, oral sinus thus formed a rather large immersed avicularium with a triangular 
mandible pointing upwards is developed. Ooecia deeply immersed, with several 
irregular fissures or triangular punctures in front. 
Habitat. — Station 148, lat. 46° 47' S., long. 51° 37' E., 210 fathoms, hard ground, 
gravel and shells. Station 186, Cape York, lat. 10° 30' S., long. 142° 18' E. ; 8 fathoms, 
coral mud. Samboangan, 10 fathoms. 
(2) Escharoides verruculata , Smitt (sp.). 
Cellepora verruculata, Smitt, Florid. Bryoz., pt. 2, p. 50, pl. viii. figs. 170-172. 
Habitat. — Station 151, off Heard Island, 75 fathoms, mud. 
[West of Tortugas, Gulf of Mexico, Pourtales]. 
6. Smittia, Hincks. 
Escliara (pars), Auctt. 
Berenicea (pars), Johnst. 
Lepralia (pars), Johnst., Bk., &c. 
Escliarella, Smitt, Ofv. K. Vet. Ak. Forh. 1878 (nec Escliarella Gray nec d’Orb.). 
Smittia, Hincks, Ann. and Mag. Nat. Hist., ser. 5, vol. iii. p. 160, 1879. 
Character. — Zoarium erect bi- or uni-laminar or crustaceous free or adnate. Primary 
orifice entire, with an internal median denticle. Secondary orifice canaliculate, usually 
enclosing a median avicularium. 
(a) Bilaminar (escharan). 
(1) Smittia tenuis, n. sp. ? (Pl. XX. fig. 1). 
Character. — Zoarium dichotomously branched (?) not always in the same plane ; com- 
pressed. Zooecia completely immersed, pyriform, bordered by a single row of punctures, 
surface granular. Mouth pyriform, with a minute internal denticle ? and rarely a median 
suboral avicularium, with a long spatulate mandible, pointing directly downwards. 
