54 FUSING. 



genus, is quite smooth, sub-cylindrical, blunt, of one whorl and 

 a half; the periostracum 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, 



P. TUBERCULATUS, Lam. PI, 33, fig. 100; pi. 34, figs, 110, 111. 



White, coarsely sculptured with revolving rounded ribs, the 

 angle of the shoulder 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. Nicobaricus, of which, however, it may be only 

 a variety. M. Tapparone-Canefri has given this species the 

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

 name by Chemnitz for another species, but as that author was 

 not binomial, his descriptive phrase being " F. tuberculatus sen 

 muricatus," Lamarck's designation can stand, 



Yar. NODOSOPLICATUS, Dunker. PI 34, figs. 110. 111. 



Shell larger, more prominently nodose, unicolored. 



Length, 5' 5 inches. Japan. 



Lischke figures a variety (fig. 1 11) of this form, which not only 

 approaches the next species but, in its obsolete carin<e, connects 

 it also with a different group of Fusi. t 



F. LOEBBECKEI, Kobelt. PI. 34, fig.'112. 



Greyish white, spire somewhat stained with yellow. 

 Length, 106 mill. 



Hob. unknown. 



Described from a single, somewhat worn specimen. 



F. PERPLEXUS, A. Adams. PI. 3S, figs. 102-10T. 



Shell white or yellowish, with or without 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 they are entirely absent, and the body-whorl 

 is rounded and simply sculptured with revolving stria?. This 

 extensive range of variation, fully established by the admirable 

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



