SMITH : RECENT SPECIES OF THE GENUS PIRULA, LAMARCK. 69 



With the exception of Kiener all the monographers have 

 designated this species by the name decussaia, proposed by Wood in 

 1828. Three years previously, however, Sowerby had described it 

 as I*, veiitricosa, w^hich name on account of priority should be 

 employed. 



6. Pirula filosa, Sowerby. 



Pyrula filosa, Sowerby. Conchologist, vol. ii., p. 74. 



Hab. : Hong Kong. 



"This species may readily be recognised by its numerous and 

 regular transverse brown lines," and " its cancellating ridges are 

 more prominent, regular, and distant " than in other recent species. 



7. Pirula pellucida (Deshayes). 



Ficus pellucidus, Deshayes. Journ. de Conch., 1856, p. 184, pi. vi., 

 figs. I, 2. 



Hab. ? 



This species has been regarded by Kobelt and Tryon as a variety 

 of P. ficiis. The marked difference of colour and form, besides the 

 opinion of such a master in conchology as Deshayes, seem to me to 

 indicate or almost prove the distinctness of the species. 



8. Pirula tessellata (Kobelt). 



Ficula tessellata, Kobelt. Conch. Cab., ed. 2, p. 12, pi. ii., f. 3. 

 Pyrula tessellata, Tryon. Man. Conch., vol. vii., p. 267, pi. v., f. 31 



(after Kobelt). 

 Ficiila reticulata (partim), Sowerby. Thes. Conch., vol. iv., pi. 423, f. 2. 



Hab. : Australia (Kobelt) ; Rosemary Is. [Dampier Archipelago], 

 Australia (Tryon); Swan River (Mus. Cuming). 



Neither of the three specimens of this species in the British 

 Museum have the two pale brownish bands described by Kobelt- 

 They are quite white excepting the transverse series of subquadrate 

 brownish spots. 



9. Pirula investigatoris, Smith. 



Sycotypiis sp., Wood-Mason and Alcock, Ann. Mag. Nat. Hist., 1891, 



vol. vii., p. 15, cut 2. 

 Sycotypiis investigatoris iid. MSS. 

 Pirula investigatoris, Smith. Ann. Mag. Nat. Hist., 1894, vol. xiv., 



P- 367- 



Hab.: Off Ganjam coast, east coast of India, in 98-102 fathoms, 

 on a sandy bottom. 



A species of thin texture, more ventricose and with a higher 

 spire than any of the other recent forms. It is as smooth and finely 

 sculptured as P. ficus. 



