18 Mr. T. Whitelegge on Australian Polyzoa. 



Loc. Port Denison. 



I have only seen some five or six specimens of this species, 

 all of which are immature, and probably when obtained in 

 the adult state the zoarium will be found to be concave 

 beneath. I have seen one specimen in which the base is 

 concave; but it is too imperfect to be certain as to its identity. 

 The figure given by Mr. Haswell is upside down, but the 

 outlines of the peristomial orifices are correct. The outer row 

 of zooecia are very prominent and without avicularia. 



4. Bipora crassa (Tenison- Woods) . 



Lunulites (Cupularid) crassa, Ten. -Woods, Trans. Phil. Soc. Adelaide, 

 1879-80, p. 5, pi. i. figs. la,lb,lc. 



I have examined the type specimens in the Macleay Mu- 

 seum, which resemble the last species in the peristomial 

 characters, the margin being produced and very much thick- 

 ened at the sides, hiding to a great extent the oral aperture, 

 which lies in a depression below. 



The avicularia, however, have a subcircular mandible, and 

 the pore over the mouth is large. I have no doubt of its 

 being a good species. Mr. Waters, when speaking of the 

 plates which accompany Mr. Woods's paper, mentions the 

 fact that the whole of the species figured are the wrong side 

 up, which is certainly true of all the species except two ; but 

 even these were intended to represent the same aspect as the 

 others. The figure of B. crassa is, after all, the right side 

 up, and gives an accurate view of the oral aperture with the 

 special pore above. It is also probably the first pubUshed 

 figure which exhibits the form of the true operculum-bearing 

 aperture. 



I have no doubt Mr. Woods saw the important structural 

 difierence between this species and those belonging to the 

 Selenariadse. 



Loc. Off Cape Three Points and Port Stephens (70 to 80 

 fathoms). 



5. Bipora angulopora (Tenison- Woods) . 



Lunulites angulopora, Ten.-Woods, op. cit. p. 7, pi. i. figs. 3 a-3 c. 

 Cmiescharellina cwiica, Hasw. Proc. Linn. Soc. N. S. W. 1880, vol. v. 



part i. p. 42, pi. iii. figs. 7, 8. 

 Lunulites incisa, Hincks, Ann. & Mag. Nat. Hist. ser. 5, 1881, vol. viii. 



p. 127, pi. iv. figs. 1-3. 



Zoarium conical, plane or slightly concave beneath ; zooecia 

 in alternating rows, sometimes with an incomplete row of 



