Coveutrey.—Critical Notes on the New Zealand Hydroida. 299 
- Allman’s Calypto-blastea, and is very abundantly illustrated on our coasts ; 
the third sub-order is identical with the Eleuthero-blastea of Allman, some 
members of this sub-order also existing in New Zealand.{ § 
Sub-order Tuecarnora, Hincks. 
Family I1—Campanularide. Genus Obelia. 
O. geniculata, Linneeus, Hincks, loc. cit., p. 148. 
Laomedea-geniculata, vide ‘* Trans. N.Z. Inst.,”’ Vol. VIL., p. 290, Fig. 42, 
eh, oom 
It differs from the British specimens in the following particulars. It is 
more robust in habit, its hydrothecw are larger, and its gonothece present 
some peculiarities ; in many specimens these are decidedly urceolate, but 
occasionally there occurs on the same colony one or two reproductive cap- 
sules that have a similar form to the nutritive calycles, only that they are 
quite as large as the other gonothece. For interesting points concerning its 
distribution in space, I must refer to the “ Annals and Magazine of Natural 
ory.” 
O. pygmea, sp. noy., mihi. Vide “ Annals” loc. cit. 
Genus Campanularia. 
C, bilabiata, mihi. “ Trans. N.Z. Inst.,”’ Vol. VII., p. 291, Figs. 
46-49, Pl. XX. 
This not like any of the British forms. 
C. Integra, Hutton, Vol. VIL., “ Trans.” loc. cit. 
The species I depicted in Fig. 45, Pl. XX., I now believe to be Campanu- 
laria caliculata, Hincks. 
Family IV.—Lafoéide. Genus Lafééa, Laniouroux. 
Within the past four months I have got several scraps of what I believe 
to be Lafoéa dumosa, chiefly from Wickliff Bay, Hooper's Inlet, and Sandfly 
Bay Beach, Tairoa Peninsula, 
Family VII.—Haleciide. Genus Halecium, Oken. 
H, delicatula, sp. hov., mihi. ‘ Annals,” loc. cit. 
Thave since obtained this in the lower harbour Port Chalmers. 
Family VILI.— Sertulariide. Genus Sertularella.* 
a. “tig Gray, “ Dieff. N.Z.” Hutton, loc. cit. Coughtrey, 
¢. cit, 
ss 
8, 
} Vide Memoir on Tubularian Hydroids. Roy. Soc., 1871. 
§ Thay : a 
yee ” Seen two Hydra in New Zealand ; one nearly like H. viridis, of Britain, and 
; have not been able to identify with the British members of Gymnochroa. 
ym Sertularia is now divided into three:—1. Sertularella; 2. Diphasia; 3. 
. 
