36 



EXPLANATION OF PLATE III. 



L 



The shell, natural size. 



Apical whorls of the shell, enlarged to 



show hair-points. 

 Genitalia (unravelled, the spcrnialhecic 



duct was bound to the uterus as 



sliown in figure 8.) 

 The flagelluin, " taloij " and origin of 



the vas deferens, enlarged and seen 



from above and below. 

 Outer lateral " teeth" from the ratlula. 

 The " jaw." 

 Median and inner lateral " teeth " from 



the radula. 



Cliloyitis fl-'ig. 8. 



{Siik'.basis) I ^'^'i- 9- 



relisei . l 



von Martens, l^ 



Genitalia (not imravelled). 



The flagellum, "talon,' and oiij^iii ol 



the vas deferens, enlarged ;is seen 



frcm above and below. 



NOTICE. 



The Committee of the Pritish Association ( r Zoological 

 Bibliography and Pid)lication have made the following state- 

 ment : — 



It is the general opinion of scientific workers, with which the Committee 

 cordially agrees : — 



(i) That each part of a serial pnblication should have the date of actual 

 publication, as near as may be, printed on the wrapper, and when 

 possible, on the last sheet sent to press. 



(2) That authors' separate copies should be issued with the orij^inal 

 pagination and plate-numbers clearly indicated on each page and plate, 

 and with a reference to the original jilace of publication. 



(3) That authors' separate copies should not be distributed pri\ately 

 before the paper has been published in the regular manner. 



The Committee further begs to ask for your co-operation in the following 

 matter. There are certain rules of conduct upon which the best workers are 

 agreed, but which it is impossible to enforce, and to which it is difficult to 

 convert the mass of writers. These are : — 



(4) That it is desirable to express the subject of one's paper in its title, 

 while keeping the title as concise as possible. 



(5) That new species should be properly diagnosed and figured when 

 possible. 



(6) That new names should not be proposed in irrelevant footnotes, or 

 aronvmous paragraphs. 



(7) That rtferer.ces to previous publications should be made fully and 

 correctly, if possible in accordance with one of the recognized sets of 

 rules for quotation, such as that recently adopted by the French 

 Zoological Society. 



