ON RECENT POLYZOA. 533. 
require altering to admit his D. patellaria, var. multi- 
juncta,. .. and he says that Diachoris can only be 
looked upon asa provisional one ; an opinion with which 
Mr. Hincks ‘ quite agrees.’ But Mr. Hincks says in 
addition to this that ‘the affinity between Diachoris 
and Beania and Bugula is of the closest kind.’ ‘Ann. 
Mag. Nat. Hist.’ Feb. 1881, p. 157. The following are 
the described species :— 
5. Diachoris crotali, Busk, Bass’s Straits. 
Magellanica, Busk = D. Buskei, Heller, Straits of 
Magellan; New Zealand. 
inermis, Busk, same localities. 
costata, Busk, Kerguelen Island. 
spinigera, Macqil., Australia. 
hirtissima, Heller, Adriatic; Cape of Good Hope 
= Chaunosia, id., Busk. 
Buskiana, Hutton, New Zealand. 
In another of his ‘ Contributions’ Mr. Hincks de- 
scribes other species of this genus (‘Ann. Mag. Nat. 
Hist.’ Aug. 1881, pp. 1382-134). 
distans, Hincks, op. cit. p. 132, pl. v. figs. 4-6, South 
Africa. Resembles the D. spinigera, Macgil. 
a intermedia, Hincks, op. cit. p. 133, Tasmania. 
ub hirtissima, Heller. 
form. robusta, Hincks, op.-cit. p. 133, pl. v. figs. 9, 9a. 
The Chawnosia fragilis described by Mr. Ridley 
(Proc. Zool. Soc. 1881, p. 45), from the Straits of 
Magellan, ‘ approaches still more nearly to Beania; its 
polypide, however, is said to be furnished with a 
gizzard, and it may possibly be entitled to generic 
rank.’—Hincks, op. cit. p. 133. 
In another paper, ‘ Polyzoaof New Zealand and Australia,’ contri- 
butions ‘Ann. Mag. Nat. Hist.’ March 1885, Mr. Hincks gives a very 
full account of Diachoris, and describes two new species. 
Diachoris elongata, Hincks, pl. ix. fig. 1, Napier, New Zealand. 
x quadricornuta, Hincks, pl. ix. fig. 2, Australia. 
Very many of these Australian forms of Polyzoa, though described 
by Mr. Hincks, we owe to the laborious scrutiny of Miss E. C. Jelly, 
whose specimens Mr. Hincks so justly and so continuously acknowledges ; 
Some specimens we owe to Miss Gatty ; but for the enthusiastic dredgings 
of Mr. Bracebridge Wilson, the Port Phillip Head (Victoria) Polyzoa 
would have been a loss to science. 
Mr. Hincks! speaking of the genus Diachoris, as originally defined 
by Busk, says that it ‘must be regarded as a purely artificial division. 
But most of the forms which have been ranked under the name present 
well-marked characters . . . and are properly associated as a natural 
group. They have the cell of Bugula and are furnished with the capitate 
and articulated avicularium so characteristic of that genus. ... And 
probably the natural relationships would be best represented by ranking 
the true forms of Diachoris as a subsection of the genus Bugula.’ The 
» Ann. Mag. Nat. Hist., March 1885, p. 246. 
