IREDALE : ON KERMADEC MOLLDSCA. 223 



I mentioned (loc. cit., p. 321) as converging round Thais succincta, 

 Lam. The only name I know of as being based on any of those 

 there mentioned is Agnewia, Ten. -Woods, proposed for Purpura 

 tritotiiforriiis, Blainville. This is included in the general synonymy 

 of Thais by Dall, but of what section or sub-genus he considers it 

 a synonym in particular I am unable to say. Consequently I do not 

 know where Dall would place any of our Australian Thaitids, save 

 T. hausfrum, Martyn, and T. amygdala, Kiener. Having carefully 

 examined all the names noted by Dall as referable to these Thaitid 

 molluscs, I propose Lepsiella, n.gen., with type Purpura scohina. 

 Quo}' & Gaimard. and JVeofJiias, n.gen., with type Purpura Smithi, 

 Erazier, and will fully discuss their relationships and status in anotlier 

 place, 



Melarhaphe, Meuke. 



This would appear to bo the generic name to be used for the 

 Australian species grouped round Littorina mauritiana, Lamarck. In 

 the Proc. Roy. Soc! Tasm., 1908 (1909), p. 56, W. L. :^[ay accepted 

 Litorina, Menke, 1828, concluding that Ferussac's introduction of 

 Littorina was imrecognizable as being that of a nude name only. 

 He acknowledged that this acceptation was due to Mr. Hedley's 

 suggestion. My own interpretation of Ferussac's proposal was that 

 Littorina was legitimately introduced by that author, and, moreover, 

 that the type of that genus was L. obtusata, Linne, as fixed by Rang 

 (Man. Uollusques, 1829, p. 185) under the name L. littoralis. I am 

 glad to note that Dall (Dept. Int. U.S. Geol. Surv., Prof. Paper 

 No. 59, 1909, p. 79) had anticipated me in arriving at the same 

 conclusion. The type of Littorina is quite unlike the Austro- 

 !N^eozelanic shells known under that name, and the name to be used 

 for those is Melarhaphe. Commonly quoted as of Miihlfeldt, this 

 name was introduced into literature by Menke (Synops. meth. Moll., 

 1828, p. 23) thus : Paludina glahrata, Zgl. {Turho c(Brulescens, Lam., 

 T. riipestris, Chabr., Melarhaphe glair ata, Mhlfld.). The first 

 reference is also to a manuscript name, as the only publication of 

 Ziegler's name is by Pfeiffer in the Nat. Deutsch. Land u. Sudw. 

 Moll., partiii. p. 46, pi. viii, figs. 9-10, 1828. This shell has been 

 identified as Littorina neritoides, Linn., of which Turho cctrulescens. 

 Lam., is also considered a synonym. When Quoy & Gaimard 

 described their Littorina Dienienensis (Yoy. de I'Astrol. Zool., vol. iii, 

 p. 479, 1835) they compared it specifically with L. cccrulescens, 

 Lamarck, so that there need be no hesitation in using Melarhaphe for 

 such shells. 



Penion, Fischer. 



The Austro-Neozelanic marine molhiscan group commonlj' referred 

 to as Siphonalia must bear this generic name. 



Siphonalia was introduced by A. Adams (Ann. Mag. Nat. Hist., 

 ser. Ill, vol. xi, p. 202, 1863) for a number of Japanese shells, of which 

 Buccinvm cassidari(eforme. Reeve, is the first species, and should be 

 taken as type ; the others are mostly congeneric with this. This shell 



