mediterea.neatf and new-zealand retepoeie. 2g9 



New Zealand. 



The only reference, so far as I am aware, to New-Zealand 

 MeteporcB is in Hutton's ' Catalogue of Marine and Land Shells,' 

 &c. p. 195, where R. cellulosa is said to have been found off 

 Chatham Island, New Zealand; but seeing bow unsatisfactory 

 the descriptions of B. cellulosa are, it may be doubted whether 

 it has been found in the southern hemisphere. 



Miss Jelly has lent me specimens of JR. Jlssa, which occiirs in 

 Victoria, N. S. W., and Tasmania. Of two species of Betepora 

 in my collection, both of which were given to me by Miss Jelly, 

 one is new and the other appears to be a form of B. monilifera. 



E-ETEPOEA monilieeea, forma munita, HincTcs. (PI. VII. 



figs, 7-11.) 



A colony of much convoluted Betepora belongs to the group 

 oi B. monilifera, though the absence of ovicells leaves the deter- 

 mination somewhat unsatisfactory. The peristome is very slightly 

 raised, there is a suboral pore, and a small triangular avicularium 

 on the peristome by the side of the pore ; besides this there are 

 three kinds of avicularia scattered abundantly over the anterior 

 surface — (1) a long triangular one, usually without a bar, (2) a 

 small semicircular one, (3) a small oval one ; and there is also a 

 large semicircular avicularium near the angle of a fenestra on 

 the anterior surface. On the dorsal surface there are small oval 

 avicularia, and these are especially numerous within the fenestras. 

 The opercula are very thin, which is not the case with my Aus- 

 tralian specimens of munita. 



The vibices are few, meeting in the middle or crossing over the 

 branch, and there are no dorsal fenestral avicularia. 



The small avicularium on the peristome resembles those on 

 B. porcellana, B. monilifera, B. aurantiaca, B. granulata. 



Hah. Victoria; South Australia; New Zealand; and var. 

 japonica, B., from Japan. 



B-ETEPOEA nssA, MaeO. (PI. VII. figs. 21, 22.) 



Retepora fissa, MacG. Trans. Roy. Sac. Vict. vol. ix. p. 140, andvol.xix. 



p. 291, fig. 8 ; ZoolVict. dec. x. p. 17, pi. xcv. figs. 12-16 ; Waters, Ann. ^ 



Mag. Nat. Hist. ser. 6, vol. iv. p. 18. 



Miss Jelly has kindly lent me specimens from New Zealand 



which Mr. Busk had named B. maorica, MSS., and another which 



