Hurton,—Catalogue of the Worms of New Zealand, 323 
Genus Porroa, Quatrefages. 
Head with five antenne ; buccal segment with only two tentacles. 
P. mrcropuyiia, Schmarda, le., p. 86, pl. 29, f. 280. Quat: E., p. 128. 
Back very convex, blackish green; branchim rich green, small, ovalo- 
cordate ; eyes four. Tentacles (antennæ) two frontal, two lateral, dissimilar, 
cervical. Tentacles two; ventral cirri tubercular. 
Family Svrrma. 
Body elongated; head with tentacles, often with eyes; peristome with 
2-4 cirri, often united to the prostomium ; pharynx not protrusible, some- 
times toothed, or with a chitinous tube, which bears a boring spine; feet 
one-branched, with two aciculate bristle clusters; ventral cirri short or 
none, 
Genus Sph rosyllis, Quatrefages. 
Head not distinct from the buccal segment, with two frontal lobes, five 
antenne or tentacles, and eyes. 
S. macrura, Schmarda, l.c., p. 70 (Syllis). Quat., l.c. IL, p. 58. 
Body yellowish, convex above; below flat; frontal lobes conical ; eyes 
four, disposed in a trapezium; branchise (upper cirri) short ; 30 articulated. 
Family CrggnarTULIDAE. 
Body rounded, fusiform; head with no teeth, antenne, nor tentacles ; 
feet in two series, on the lower hooks; thread-like gills on many of the 
segments, 
Genus Cirratulus, Lamarck. 
Head conic, mouth inferior; body cylindrical; first and last segments 
only without branchie. 
C. ancuytocnatus, Schmarda, l.c., p. 58. Quat., IL., p. 458. 
Body ochraceous; branchi red; back convex, belly flat; sides narrow, 
angulated. 
Order CEgPHALOBRANCHIATA. 
Worm-like marine animals, mostly protected by a tube; body presenting 
distinct regions; respiration by branchie placed near or on the head. 
Sexes distinct ; no teeth, nor epipharynx. 
Family Purrvusips. 
Free; peristome without bristles; branchism of simple threads surrounded 
by a girdle of long, yellow, thick bristles; segments not ringed; feet with 
upper linear and lower hook-like bristles; sometimes with terminal suckers. 
Genus Chlorema, Dujardin. 
Mouth subterminal, placed between the two antenne ; body elongated, 
iform, covered with long hairs, 
