54 FUSING. 



genus, is quite smooth, sub-c\ylindrical, blunt, of one wliorl and 

 a half; the periostracuni thin, pale brown, hairy." 



The above description is all that is known of the species ; it 

 does not seem to convey any really distinctive characters from 

 several other well-known species. It has not been figured, 



F. TUBERCULATUS, Lam. PI, 33, fig. 100 ; pi. 34, figs, 110, 1 11. 



White, coarsely sculptured with revolving rounded ribs, the 

 angle of the sho\ilder somewhat distantly tuberculated, and the 

 Interstices chestnut-brown. Length, 4-5 inches. 



Red Sea, Indian Ocean. 



This shell has a shorter spire and canal and is wider in pro- 

 portion than F. Nicobaricits^ of which, however, it may be only 

 a variety. M. Tapparone-Canefri has gi\'en this species the 

 name F. maculiferus because of the prior use of the specific 

 name b}' Chemnitz for another species, but as that author was 

 not binomial, his descriptive phrase being " F. tnberculatus seu 

 mui'icatns," Lamarck's designation can stand. 



A'ar. NOUOSOPLICATUS, Dnnkor. PI 34, figs. 110. 111. 



Shell larger, more prominently nodose, unicolored. 



Length, 5'5 inches. Japan. 



Lisehke figures a variety (fig. Ill) of this form, which not only 

 approaches the next species Init, in its obsolete carina, connects 

 it also with a different group of Fusi. 



F. LoEBBECKEi, Kobclt. PI. 34, fig. 112. 



Greyish white, spire somewhat stained with yellow. 



Length, 100 mill. 



Sab. unknown. 



Described from a single, somewhat worn specimen. 



F. PERi'LEXUS, A. Adams. PI. 35, figs. 102-107. 



Shell white or A-elhnvish, with or withont chestnut markings, 

 rather thin. Typically the shoulder and nodules are well devel- 

 oped, but they gradually disappear in a series of individuals 

 until in some forms the}^ are entirely absent, and the body-whorl 

 is rounded and simply sculptured with revolving stria\ This 

 extensive range of variation, full3' established by the admirable 

 figures of Lischke's Fusus inconstans (as above), not only suffices 



