384 Mr. Cosmo Melvill on the 



other a very interesting new form, like L. infundihulum 

 (Gmelin) in miniature, called by me in MSS. and 

 afterwards described by Mr. G. B. Sowerby {Proc. Zool. 

 Soc.y 1 878), as L. Cayohiiesoniais^ after the Island of Cayo 

 Hueso or Key West. Of this small species I give a figure 

 (Fig.2). No species occur in Europe proper, excepting the 

 Mediterranean YxxsAXSyWosN Aptyxis Syracusanus{L.^^dLwdi Lati- 

 rus ltgnarius{\^.) ( = Fasciolaria Tarentma), though other Fusi 

 occur there, which are not dealt with in this paper. Boreofusus 

 Berniciensis (King) occurs on the Norwegian and North 

 British coasts, and Latirus armatus (Ad.), having occurred 

 both at Madeira and Teneriffe, may probably reward the 

 future dredgers still further north — as, now that we hear of 

 Cassidaria Tyrrhena^ for instance, dredged off the S. coast of 

 Ireland, there is no saying what treasures are only await- 

 ing the man, and the opportunity. Our British lists will, in 

 time, probably be largely increased. The L. armatus (Ad.), 

 is a most exceptionally interesting species, and one long 

 misunderstood. Consult the Rev. R. Boog Watson's full 

 report of it ( Voy. Challenger Zool. Vol. XV., p. 243) under 

 the name of Fasciolaria armata (A. Ad.), formerly L. or 

 Chascax Maderensis (Watson). Only three Latirus proper, 

 L. Strangei (A. Ad.), L, contemptus (Ad.), and the above L. 

 armatus (Ad.), were dredged in this expedition, during the 

 whole of its protracted wanderings, and in two out of the 

 three (for I have examined the specimens) they are most 

 meagrely and poorly represented. 



The bulk of Latirus and Peristernia are found in the 

 E. African and Asiatic Islands — notably Mauritius, where, 

 on Barkly Island,* beautiful specimens, especially of the 

 smaller kinds, with many new species, have been obtained, 

 mainly by the exertions of M. Robillard, Sir H. Barkly, Sir 



* cf. Subtropical Rambles in Mauritius, by Mr. N. Pike, where an 

 account of this recently-formed island, named after the then Governor of 

 Mauritius, Sir H. Barkly, is given. 



