144 TUDICLA. 



Genus TUDICLA, Bolten. 



Besides the typical form three additional spinose species have 

 been described, viz., T. armigera and spinosa of Adams, and T. 

 inermis, Sowb. For these H. and A, Adams have proposed a 

 subgeneric name, Tudicula. Sowerby remarks that their posses- 

 sion of three prominent transverse plaits on the columella brings 

 them to the family Turbinillidae, but T. spirillus itself, when closely 

 examined, shows slight traces of additional plaits besides the 

 single prominent one, and the shells are otherwise closely related 

 to T. spirillus particularly in the long, narrow canal, and the 

 well-defined inner lip. 



T. SPIRILLUS, Linn. PL 58, fig. 409. 



Flesh-brown, spotted and clouded with light chestnut. 



Length, 70 mill. 



Indian Ocean. 

 T. CUMINGII, Jonas. PL 58, figs. 407, 408. 



Whitish, maculated with chestnut. Length, 65 mill. 



China. 



T. Couderti, Petit (fig. 408), appears to me to be identical, as 

 does also T. fusoides, A. Ad., an unfigured species, also from 

 China. 



T. ARMIGERA, A. Adams. PL 58. fig. 41 1. 



Light yellowish brown, whitish within the aperture. 

 Length, 2' 7 5 inches. 



This species has not been figured by its author, but I am able 

 to give an illustration from specimens sent to me by Mr. John 

 Brazier, of Sydney, N. S. Wales. In possessing spines upon the 

 canal as well as shoulder these specimens agree with the descrip- 

 tion of T. armigera, whilst in that of T. spinosa no second series 

 of spines is mentioned : yet I suspect that the latter is not dis- 

 tinct, and that Mr. Sowerby's T. inermis is simply a depauperated 

 specimen of the same species. 



T. SPINOSA, H. and A. Adams. 



An unfigured species from Australia, probably identical with 

 T. armigera : See remarks under that species. 



