SOWERBY : NEW SPECIES OF MARINE SHELLS. 75 



and has four very oblique plaits on the columella. It is undoubtedly 

 the species figured and described by Dr. Dohrn as Voluta dubia, Brod., from 

 Which, however, it is perfectly distinct. Broderip's figure in the Zoological 

 Journal, copied in the Conchologia Iconica, etc., represents a shell so 

 different that it is strange that this species should have been mistaken 

 for it. With the exception of its being spirally striated and somewhat 

 similarly spotted, it differs in almost every respect, and notably in the 

 absence of the remarkable bulb-shaped apex characteristic of V. dubia, 

 and which has its counterpart in Neptuneopsis gilchristi, Sowerby. Another 

 remarkable error concerns Fusus tessellatus, Schub. and Wagn., which 

 has been placed by Kiener, Reeve and others, in the synonomy of Voluta 

 dubia, and Dr. Dall describes and figures a shell which may well belong 

 to the former species as representing the latter, but Kiener figures and 

 describes as Fusus tessellatus, Schub. and Wagn., a much larger shell 

 of a much more inflated growth and entirely destitute of columella plaits, 

 which may, however, possibly be a full-grown specimen of that species. 

 It is of a very thin, light substance, and does not at all resemble F. dubia. 



To crown all this confusion Tryon seeks to unite all these forms with 

 Voluta junonia, with which, in my opinion, they have scarcely any 

 affinity. 



I have come to the conclusion that there are four perfectly distinct 

 species, namely : — 



1. Voluta .junonia, Chemn. : Conch. Cab., xi, pi. 177, fig. 1,704. 



2. Voluta dubia, Brod. : Zool. Journ., vol. iii, p. 81, plate iii, fig. 1. 



=^ Voluta junomtfvar. dubia, Tryon : Man. of Conch., vol. vi, p. 90, 



pi. 27, fig. 81. 

 =^ Voluta {Aurinia) dubia, H. and A. Adams : Gen. Rec. Moll, vol. i, 



p. 166. 



3. Voluta tessellata, Schub. and Wagn. 



= Fusus tessellatus, Schub. and Wagn. : Conch. Cab., supp. 3,048. 

 = Aurinia dubia, Dall: Rep. Blake Gastro., Bull. Mus. Comp. 



Zool., 1889, xviii, p. 151 ; Proc. U.S. Nat. Mus., vol. xxiv, p. 504, 



pi. xxix, fig. 11. Non Voluta dubia, Brod. 

 %= Fusus tessellatus, Kiener: Spec. Gen. et Icon. Coq. Viv., Fusus, 



p. 39, pi. xxix, fig. 1. 



4. Voluta dohrni, Sowerby, n.sp. 



= Voluta dubia, Dohrn : Jahrb. D. Mai. GeselL, vol. vi, pp. 150-156, 



pi. iv, figs, 1-3. Non Brod. 

 ^Voluta junonia var. dubia (pro parte), Tryon: Man. of Conch., 

 vol. vi, pi. 27, fig. 77. 



Voluta (Lypia) planieostata, n.sp, 



PI. V, fig. 7. 



Testa oblongo-fusiformis, solidula, pallide lutescens, Uneis numerosis 



transversis, pallide aurantiacis vittata ; spira elato pyramidalis, convcxius- 



