OF THE SELENARIADiE, CONESCHARELLINID.fi, ETC. 423 



of the zooecia or of the avicularia, and often the disk of the semilunar slit 

 has disappeared leaving only a semicircular opening. There is a pore-tube 

 in the wall, at the proximal end of the oral aperture, and a similar tube 

 occurs in C. pldlippinensis, Busk, C. fahellaris, Lev., C. conica, Hasw., and 

 has been referred to by Levinsen (loc. cit. p. 309), and by Wbitelegge 

 (loc. cit. p. 339). 



The dorsal surface of the smaller allied form (see C. conica p. 423) has 

 moderate-sized pores with usually a few small triangular avicularia scattered 

 about, though in some specimens none are found. A specimen from Port 

 Stephens, which I think must be C. cancellata, Busk, has fairly laro-e round 

 openings at the base with smaller round openings near the larger ones, 

 sometimes surrounding them, in other cases irregularly placed. The base of 

 C. pliilippirtensis has numerous small round avicularia, so that the basal 

 surface of Conescharellina gives most useful characters. Woods' figure is 

 very unsatisfactory and might represent either of two or three species ; 

 though from it together with the description wo seem justified in using his 

 specific name. McGillivray * gives this with a ? as fossil, but it really seems 

 as if both his description and figure have got in the wrong places, at least 

 I cannot understand them. 



Loc. Port Stephens, N. S. Wales (Woods), and 25 fath. sandy mud bottom 

 (sent by Brazier) ; Bass's Straits (Hincks). 



Conescharellina conica, Haswell (non Hantken). (PI. 29. figs. 16, 20.) 



Conescharellina conica, Haswell, Proc. Linn. Soc. N. S. Wales, vol. v. p. 42 pi. 3 

 figs. 7,8(1880). 



Conescharellina incisa, Waters (pars), " N. S. Wales," p. 199, pi. 6. fin-. 20 (1887). 



In describing C. angulopora, Woods (p. 422) I have said that there were 

 two very similar Australian species. This smaller one has, however, the axis 

 of the cone relatively much longer, while the larger one has the base 

 relatively much larger. The zooecia and avicularia are somewhat smaller 

 as is also the semilunar slit, but the most important difference is in the 

 character of the base, for on the under surface of conica there are moderate- 

 sized pores, with usually a few small triangular avicularia scattered about, 

 though in some cases none have been found. 



I have a specimen of undoubted C. conica, Haswell, from Holborn Island 

 sent to me by Haswell, and which no doubt was determined by him thouffh 

 as it is a limn time since it was received, more cannot be stated. 



At one time it seemed that the name conica could not be retained, as it has 

 been used in several closely allied genera, but as we are netting more 

 definite ideas about the genera, there is not as much force in the objection as 

 there was then. 



Loc. Holborn Island (Haswell) ; N.E. coast of Australia, 23 fath. (sent by 

 Brazier). 



* "Tert. Victoria," p. 40, pi. 8. tig. 1 (1895). 



