BUCCINID^E. 91 



T. (Fusus) SULCATA, Gray. No locality. 



T. (Fusus) ELEGANS, Gray, Sierra Leone. 



A, Adams and Dmiker have both used the same specific name. 



T. PLICATULA, T. L^VIGATA, T. IMPRESSA, T. FENESTRATA, Allton. 



All without locality. 

 T. SPINOSA, Phil. China. 



T. (FASCIOLARIA) BISTRIATA, Gould and Carpenter. 



The small size (l-OT inches) and long canal render it im- 

 probable that this is a Fasciolaria, unless a very young speci- 

 men. Possibly a Latirus. Panama ; a single specimen. 

 T. (Fusus) ROSA-PONTI, Lesson. Gambier Is. 

 T. TAHEITENSIS, Lesson. Taheiti. 

 T. PURPUROIDES, Lesson. Gambier Is. 



Family BUCCINID.E. 



Shell ovate, oblong or pear-shaped ; canal moderate or short, 

 columella without folds or plications. 



Operculum with terminal or lateral nucleus. 



Dentition 1 1 1. The rhachidian tooth normally three 

 (sometimes as many as seven) pronged, the laterals two- or three- 

 pronged. 



The typical Bucdnum is a rather thin ovate shell, uniform and 

 dull in color, with the base of the aperture broadly notched 

 instead of being prolonged (as in the Fusidoe) into a canal ; but 

 with these have been more recently associated pyriform shells 

 having some resemblance to the latter family. *Hemifusus, 

 Melongena, Sipho, etc., pretty well bridge the chasm between the 

 two families as far as the general form of the shell is concerned, 

 but in those species of Buccinidae approaching Fusus there is 

 the general distinction that the canal, if long, is wide and open ; 

 whilst tortuous as in Fasciolaria, it has at most a single fold in 

 lieu of the plaits on the columella of that genus. I have 

 arranged the subfamilies and genera, commencing with those 

 most closely allied to Fusus, and terminating with the buccinoid 

 forms. Although the range of form is great, it will be seen that 

 the transitions are not abrupt ; and in this case the lingual den- 

 tition affords confirmation of the grouping adopted upon conch- 

 ological grounds. 

 13 



