AUSOBA. 99 



Internal margin strongly callous ; external lip obtuse and thick- 

 ened. 



Y. CONCINNA, Brod. PL 29, fig. 114. 



Yellowish brown, with close-set, undulated, longitudinal 

 chestnut lines. Length, 4-5 inches. 



Japan. 



At first sight this shell might appear to be related to V. 

 rupestriSj from the same locality, but it differs in several 

 respects, and particularly in the character of the plicae. 



Sect. 11. Ausoba, H. and A. Adau s. 



Spire short and obtuse, terminated by a papilliform summit ; 

 ist whorl coronated. 



'. CYMBIOLA (Chemn.), Sowb. PI. 29, figs. 118, 119. 



Pale yellowish gray clouded with a darker tint, and pimctntc 

 with chestnut ; aperture light chocolate. Length, 3 inches. 



Moluccas. 



The name was changed by Kiener to V. coronata because 

 cymbiola had already been used by Lamarck for another species 

 an error, as Lamarck had not used the name at all. V. corona, 

 Chemn. (fig. 119), is only known by the figure of a juvenile shell 

 in that author, copied by Sowerby in his Thesaurus. Mr. Crosse 

 believes it to be distinct, but I cannot agree to this, as it appears 

 to me to be a faded young cymbiola. The nucleus is supposed 

 to be proportionally much larger, but it is really not larger 

 than in Kiener's figure of V. coronata. Sowerby says that corona 

 having, besides the four principal plica?, several smaller ones 

 above them, is a character not shared by cymbiola, yet a charac- 

 teristic specimen of the latter, before me, has two very distinct 

 smaller plaits above the four principal ones. 



Y. KIRKI, Hutton. 



Widely oval, spire depressed ; last whorl ornamented with a 

 small number of blunt tubercles ; columella with four very 

 profound plications, the upper part with a thin callous deposit. 

 Color yellowish brown. Length 1'75, diam. l'5t inches. 



New Zealand. 



Said to be a Cymbiola ; not figured. Possibly a young shell. 



