BY T. WHITELEGGE. 343 



I have only seen some 5 oi- 6 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 

 oi-ifices are correct. The outer row of zooecia are very prominent, 

 and without avicularia. 



(4.) B. CRASS A, Tenison- Woods. 



Lunulites {Ciqni^aria) crassa, Ten.-Woods, Trans. Phil. Soc. 

 Adelaide, 1879-80, p. 5, pi. I, figs. la> lb, Ic. 



I have examined the type specimens in the Macleay Museum, 

 which resemble the last species in the peristomial characters, the 

 mai'gin being produced^ and very much thickened 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. ci'assa is after all tlie 

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

 the special pore above. Tt is also probably the first published 

 figure which exhibits the form of the true opercular-bearing aperture. 



I have no doubt Mr. Woods saw the important structural 

 diflference between this species and those belonging to the 

 Selenariadce. 



Loc. — Ofi" Cape Three Points, and Port Stephens (70 to 80 

 fathoms). 



(5.) B. AXGULOPORA, Tenison-Woods. 



Lunulites angidopora, Ten.-Woods, op. cit., p. 7, pi. I, fig. 

 3a-3c ; Conescharellina conica, Hasw. Proc. Linn. Soc. N.S.W., 



