90 proceedings of the malacological societt. 



Edgakia. 



JEdgaria, Bourguignat : ii, p. 34, pi. xiv, figs. 8-16; iii, p. 192; 



Martens, p. 208, as a subgenus of Paramelania. 

 Nassopsidia, as a subgenus of Paramelania, Martens : I.e., p. 208. 



Edgaria may differ from Lavigeria in wanting the tubercular 

 prominence on the columella, although in some specimens traces of 

 it are observable. Neither the animal nor the operculum of any of 

 the species are known. I am strongly of opinion that this so-called 

 genus will eventually be united with Lavigeria. 



Edgakia paucicostata (Bourguignat). 



Tiphohia {Paramelania) nassa, xar. paucicostata, Smith : ii, p. 561. 

 Paramelania paucicostata, Bourguignat: i, p. 69. 



Edgaria paucicostata, Bourguignat: ii, pi. xiv, figs. 8, 9 ; iii, p. 193. 

 Paramelaiiia {Edgaria) paucicostata. Martens : p. 209. 

 Paramelania {Edgaria) flexicosta, Martens: p. 209, pi. vi, fig. 42. 

 Nassopsis paucicostata, Martel & Dautzenberg : p. 170, pi. viii, figs. 8, 9. 

 Nassopsis tiarella, Martel & Dautzenberg {nee Martens): p. 175, 

 pi. viii, figs. 18, 19. 

 Edgaria callopleuros, littoralis, and ITonceti of Bourguignat seem to 

 be mere varieties of this species. 



Edgaria tiakella (Martens). 



Paramelania {Edgaria) tiarella, Martens : p. 209, pi. vi, fig. 43. 

 It is alKed to E. paucicostata, but has fewer spii'al lirae. 



Edgaria variabilis (Martel & Dautzenberg). 



Nassopsis variahilis, Martel & Dautzenberg : p. 174, pi. viii, figs. 16, 17. 

 The absence of spiral lirae and the coloration will separate this 

 species from its nearest ally, E. paucicostata. 



Edgaria jtassa (Woodward). 



Melania {Melanella) nassa, Woodward: Proc. Zool. Soc, 1859, p. 349, 



pi xlvii, fig. 4; Eeeve, Conch. Icon., fig. 216; Brot, Conch. 



Cab., pi. vi. fig. 7 ; Smith, ii, p. 348 ; iii, p. 292, pi. xxxiv, 



figs. 26-265 ; Crosse, p. 113 ; Pelseneer, p. 108. 



Tiphohia {Paramelania) nassa, Smith : ii, p. 561. 



Paramelania nassa, Bourguignat : i, p. 76 ; ii, pi. xvi, figs, 7, 8 ; 



iii. p. 227. 

 Nassopsis nassa. Martel & Dautzenberg : p. I'i5, pi. viii, figs. 1-5. 

 Paramelania {Nassopsis) nassa, Martens: p. 208. 



The following species, which are all described and figured by 

 Bourguignat (ii and iii), are, in my opinion, mere variations of this 

 species ; they ai'e described under the genus Paramelania : P. arenarmn, 

 elongata, Giraudi, Grandidieriana, lacrimosa, Lessepsiana, limneea, 

 Liiingstoniana, Locardiana, Mahilliana, Milne edward si ana, nassatella, 

 nussatiforrnis, pulchella, Randabeli, Servamiana, SmitM, venusta. 

 P. Locardiana is admitted as a species allied to crassilahris by 



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