240 Transactions. 
Sertularella мрн (Hutton). (Fig. 7.) 
Sertularia simplex Hutton, 1872, p. 257 : VERRE 1874, p. 283 (in part). 
SatdionDe pice Coughtrey, 1875, p. 300 (in part) ; 1876, p. 27. 
Sertularella fusiformis Hincks var. nana Hartlaub, 1901, p. 372 
Hydrocaulus simple (or rarely branched—Hutton), twisted at base, 
about 8 mm. in height, divided by narrow twisted joints into internodes, 
each bearing a hydrotheca on upper pa 
ydrothecae adnate a little less than half their height, divergent and 
directed somewhat forward, smooth, narrowed upwards and contracted 
near aperture, margin slightly everted, with four teeth; three internal 
compressed vertical teeth, two of which are within the two upper emar- 
ginations of -o and the third below inferior marginal tooth. 
Gonangia about times length of hydrothecae, des on lower 
portion of неона ovate, with а few distinct coarse rugae on upper 
part, and tubular neck; summit with about four conical teeth. 
Loc.—Lyall Bay (Hutton): Sumner (Hartlaub). 
I have sevens ranked S. simplex as a synonym of S. polyzonias, as 
also has Farquhar, but examination of one of Hutton’s specimens from the 
Dunedin ger shows this to be erroneous. They agree with Coughtrey's 
figure of the type (1874, fig. 8); the internal teeth, however, are not 
shown. Fig. 10 is no doubt a different em and probably fig. 9 also. 
though Hartlaub includes it with the t 
The species is analogous to the yen Lic S. indivisa, but the hydro- 
thecae are smooth and have four emarginations of the border instead of 
three; they are also larger, and have the lip rather more everted. The 
gonangia are of the same type, but larger, with neck more pronounced 
and the eas d: rugae fewer and less sharp. 
Hartlaub’s reference of this form to 8. fusiformis Hincks seems to me - 
doubtful. 
Sertularella robusta Coughtrey. 
Sertularia ss Byer (in part), a $ 283. 
Sertularella simplex Coughtrey (in part), 1875, p. 300; 1876, p. 27. 
Sertularella feles en 1875, p. 200; В, р. 97: Farquhar, 1896, p. 464. 
? Sertularella sp. Thompson, 1879, p. 101. 
Sertularella tenella Hartlaub, 1901, p. 370 
This form, originally deseribed by Coughtrey as one of the varieties 
of S. simplez Hutton, was figured by him in 1874 (pl. xx, fig. 10), but 
afterwards described as a distinct species. Hartlaub refers it, along with 
several other species, to the S. tenella of Alder (Hincks, 1868, p. 242). He 
only cites Coughtrey's original description, and seems to have overlooked 
the d references (1875 and 1876), in which Coughtrey ша! the form 
. TO 
I cannot agree with Hartlaub's reference of the present species, Wi with | 
S. microgona von Lendenfeld and S. angulosa Bale, to S. tenella, as these 
forms all possess three distinct internal teeth in the hydrothecae, which in 
. tenella are wantin 
Hartlaub's specimens were from French Pass. 
Sertularella crassiuscula n. sp. (Fig. 8.) 
Sertularella solidula Hartlaub, 19 71. 
Not S. solidula Bale, 1881, p. ма 
Hydrocaulus simple, twisted at lue: about 10-12 mm. in height, pino 2m 
by twisted joints a internodes, each bearing a hydrotheca on upper pe 
