Zoophytes from Australia and New Zealand. 107 
he gives an admirable figure, under the new name of Dyn. 
fasciculata. He sajs ( loc . cit.) } “Die Zellen sind ungefahr 
so geformt, wie bei der bekannten D. operculata , nur sind die 
beiden Spitzen des Bandes Linger, schmaler, weiter von 
einander entfernt.” This is, indeed, a very accurate state¬ 
ment of the differences between the hydrothecas of the two 
varieties. As for the gonangia, they in general differ in no 
particular from those of the British form. Two slight protu¬ 
berances or papilke are occasionally visible on opposite sides 
of the orifice; but I have never seen them any thing like so 
large as they are represented in Dr. Coughtrey’s figure (Trans. 
N.Z. Inst. pi. xx. fig. 16). I have no specimens exactly 
corresponding to 8. trispinosa , Coughtrey; but I have little 
doubt that it is in reality a mere variety of the present species. 
If this form be correctly assigned to Sertularia operculata , 
the range of that species will be indeed almost universal. 
Besides its occurrence in Natal and at the Cape of Good 
Hope, as already mentioned, Mr. Hincks records it from 
Patagonia, the Falkland Islands, the Auckland Islands, and 
Kerguelen’s Land. It did not, however, occur in the collec¬ 
tions brought home from the last-named locality by . the 
Transit-of-Venus expedition (Allman, Ann. & Mag. Nat. 
Hist., Feb. 1876). I possess a specimen from the Btrait of 
Magellan, collected by Dr. C. Forbes. 
Sertidaria furcata , a small species common on the Pacific 
coast of North America , is undistinguishable from the present 
one so far as the form of hydrothecse and gonangia is con¬ 
cerned (Trask, Proc. Calif. Acad. March 1857 ; Clark, 
Trans. Conn. Acad. vol. iii. p. 258). 
Sertularia operculata (?) is of very common occurrence in 
New Zealand and Australia. There are two very distinct 
varieties, as, indeed, is, I think, the case with our British 
specimens. The first is brown in colour, and forms dense 
short tufts, 2 or 3 inches in height. The second variety is 
of a yellowish hue, and occurs in long, trailing, dichotomously 
branching shoots, often 2 (according to Kirchenpauer 3 or 4) 
feet in height. This is not merely a difference of age. 
ft. Type form S. abietina, Linn. 
Sertularia elonyata, Lamouroux. (PI. XVIII. figs. 2-2 c.) 
Sertularia millefolium (?), Lamarck, Hist, des Anim. sans Vert. vol. ii. 
p. 11G. 
Dynamene abietinoides, Gray, Dieff. X. Zealand, vol. ii. p. 294. 
Sertularia abietinoides , Hutton, Trans. N.Z. Inst. vol. v. p. 256; 
Coughtrey, Trans. N.Z, Inst. vol. vii. 
Tropkosome. Ilydrorhiza forming a close, strong, fibrous 
