MELVII.L : ADDITIONS TO THE GKNUS I.ATIRUS. 17-^ 



14. Latirus (Peristernia) photiformis sp. nov. 



Perisiernia creninochioiie J. C. Melvill, var. photifoivnis nov. Mem. and 



Proc. Manch. See, ser. iv., vol. 4, p. 43 

 (1891). 



L. {P.) testa fusifornii, mediocri, solidula, castatieo-brunnea, anfr act Urns 

 8^, quaru/n apicales 2 J, albi, Iceves, C(zteris sex apud siittiras impressis 

 atque incrassatis, undiqtie et arete longitudmaliter rotJindicostatis, 

 costis crassis, spiraliter filoliratis, liris i>uequalibiis, magnis cuvi 

 minoiibns alter/iantibns, costis hie illic ot>iiiifio albis, aperttira ovata, 

 labio subeffi/so, cohimella carnea, paulljan excavata, triplicata, plicis 

 tiequaquam conspicuis, canali brevi. 



Long.: 22; diant.: 10 mm. 



Hab. : Mauritius. 



I had some time ago come to the conckision that this h'ttle shell 

 was quite distinct from both Z. (Peristernia) crewnoc/iione, with which 

 it was at first associated as " var. /3 photiformis,''' and also from Z. 

 {Perister?iia) canthariforniis, which I also described in the same 

 paper. This last really seems a nearer ally, although quite distinct, 

 being of a different build and form, and with longer, somewhat 

 recurved, canal. The coloration is likewise different, and the shell 

 larger in proportion than photiformis. Peristernia nana (Reeve), an 

 ally, differs in greater ventricosity of whorl, and difference of sculpture. 

 The name proposed for this new species, applied, as has already been 

 observed, in 1891 varietally, may be conveniently now adopted 

 specifically. It is bestowed in consideration of its superficial likeness 

 to Phos 7'oseatus Hinds. 



15. Latirus praestantior Melv. 



Lafinis prcestantior Melvill, Mem. and Proc. Manch. Soc, ser. iv., 

 vol. 5, p. 92 (1892). 



Z. testa fusiformi, tnrrita, solida, mfo-fuscescente, afifractibi/s 10, 

 Ion gitudina liter fort iter angulatim crassicostatis, transversini undique 

 regulariter Hloliratis, ad suturas Icevibus, duabus vel tribiis liris in 



