Hurton,—Catalogue of the Worms of New Zealand. 825 
Family SABELLIDÆ. 
Tubiculous ; body with two distinct regions; cephalic branchiæ pinnate, 
in two circlets or spirals, one of which may be rudimentary. 
Genus Sabella, Savigny. 
Head indistinct; branchie equal, more or less fan-shaped; anterior 
region not very distinct, scarcely broader than the posterior region ; tubes 
membranous, open at one end only. 
S. ARMATA, Quatrefayes, l.c., IL., p. 453. 
Head indistinct; branchie short, base produced into 22 free cirri; 
antenne two pairs; collar dilated, six-lobed; anterior body segments 
light ; sete dissimilar, uncinate and crested, 
S. CERATODAULA, Schmarda, l.c., p. 33, pl. 22, f. 186. Quat., Le., IL., p. 459. 
Branchi# hardly one-fourth the length of the body, striped with yellow 
and brown ; body brownish-yellow. 
B. arandis, Baird, P.L.S., XIII, p. 160. 
Collar rather broad, and deeply bilobed; thoracic feet seven pairs; 
segments belonging to them smooth, not grooved on the upper dorsal 
surface; back dark brown, rather yellow underneath; feet numerous, 
about 100. Peduncles large, well developed; anterior and posterior divisions 
separated by a groove, in the centre of which are situated the feet; a deep 
groove along the dorsal surface, except the seven thoracic segments; sete 
short, slender, smooth, setaceous, sharp-pointed. Length, without branchis 
iinches. Case, a leathery-looking tube, covered externally with a thin 
coat of mud. 
Family SERPULA. 
Tubieulous; two ciliated skin-folds on the front segments; branchis 
with a spiral basis, with one or two opercula with chitinous or calcareous 
discs. "Tubes calcareous, attached to stones, etc., or free. 
Genus Serpula, Linneus. 
A single cartilaginous or horny operculum; base of the branchie 
circular. Tube calcareous, fixed. 
B. anrarctica, Quatrefages, l.c., IL., p. 503 (1865). 
Branchie short, cirri 24-25. Operculum infundibuliform, sub-concave, 
margin denticulated ; body of 70-80 segments, anteriorly 7; anterior sete 
filiform, rounded; laminæ denticulated; tube like that of S. vermicularis, 
S. zeananpica, Baird, P.L.S., XL, p. 21, pl. IL, f. 9 (1864). 
Animal unknown; opereulum white, small, sub-concave, margin with 
20 denticulations ; tube slender, white, creeping, nearly round, longitudinal, 
dorsal keel small, transversely flexuously striated. 
Probably the same as the last (F.W.H.) 
