SHAAV : ON CYPJ?yFA AND TlilVIA. 305 



species to at once see the difference. When compared with C. teres 

 it is more elongated, cylindrical, rostrated, differs considerably in the 

 size and number of the teeth, and the colour and marking are also 

 different, being of a pink or mauve tinge, while teres is pale green 

 or fulvous. 



The following figures which were supposed to represent C. teres do 

 not do so, but depict this species : Sow., Conch. Illust., fig. 56 ; Rve., 

 Conch. Icon., pi. xviii, figs. 93<?, 5 ; Sow., Thes. Conch., vol. iv, 

 pi. xxvii, figs. 259, 260. 



Cypr^a ursellus, Gmelin.' 



The C. ursellus of Gmelin and the C. iirsellus, auctorum, are 

 different species. Hidalgo rightly points out (pp. 179, 426) that the 

 C. ursellus of Gmelin, Dillwyn, and Lamarck is simply a worn 

 specimen of C. hirundo of Linn. This fact is clearly shown by Gmelin's 

 references to Rumphius, Gualtier, and Martini, all of whose figures in 

 shape and marking represent the C. hirundo of Linn. The C. ursellus, 

 auct., is exceedingly well figured in Kiener's monograph of this genus 

 (pi. xxxiii, figs. 4, 4rt), and is totally different from Gmelin's species. 

 This being the case, C. ursellus, auct., has been renamed by Hidalgo 

 C. Melvilli. 



After referring to the original figures and descriptions, and examining 

 and comparing the shells, I have come to the following conclusions. 



CiPR^A Artufelli, Jouss. 

 This form is only a variety of C. clandestina, Linn., agreeing well 

 with specimens of the latter, and is not entitled to specific rank. 



Cypr^a Ann^, Roberts. 

 This species is a flat and broad variety of G. staphylma, Linn. 

 Roberts made it a variety of C. semiplota, Mighels, which is only 

 a small staphylmi. 



Ctpr-sia atomaria, Gmelin, and C. stercusmuscarijm. Lam. 

 These are not even varieties, but simply synonyms of C. punctata, 

 Linn. 



Cypr^a albuginosa. Gray. 

 C. albuginosa, Gray : Zool. Journ., 1825, vol. i, p. 510, pis. vii, xii, 



fig. 2. 

 At the bottom of Gray's description appears the following : — " This 

 beautiful shell was first mentioned in the useful elementary work 

 above quoted (Mawe), but was not described; knowing that my 

 shell is the one intended I have adopted the name." The only 

 reference to this species in Mawe's work, " The Linnean System of 

 Conchology," 1823, is on p. 97: " *albuginosa . . . California . . . 

 Birds eye Cow ery." Mawe's name is practically a nomen nudum; 

 therefore Gray, who first adopted it, and not Mawe must be considered 

 the author. (* = new species.) 



' Syst. Nat., vol. vi, p. 3411. 



