72 



PHYLOGENY OF FUSUS AND ITS ALLIES, 



/5 and the present species. Another specimen, probably of this species, 

 is from the Arabian coast. 



Localities: East Indies, Red Sea (Phil. Acad. Sci.). 



FUSUS LEPTORHYNCHUS Tapparone Canefri. 



1875. Fusus leptorhynchus Tapparone Canefri, Muricidi del. Mar. Rosso, p. 627, 



pi. 19, figs. 5, 5a. 



This species has the characters of an elongated colus-Y\kQ F. 

 polygonoides, with which Tapparone Canefri compares it. 



Locality: Red Sea (Tapparone Canefri). 



The relations of these species of this series may be expressed as 

 follows : 



II. SPECIES OF FUSUS WHOSE PRECISE RELATIONS 

 ARE UNDETERMINED. 



FUSUS SCHRAMMI Crosse. 



1865. Fusus schrammi Crosse, Journ. Conch., T. 13, p. 31, t. i, fig. 9. 

 1881. Fusus schrammi Kobelt, Monograph Fusus, p. 172, taf. 53, fig. 4. 



A good description of this species was given by Crosse, and to this 

 only a few words need be added in this connection. 



The shoulder is gently concave, the shoulder angle sharp and fur- 

 nished with spines. The ribs are marked on the earlier whorls. The 

 peripheral keel is made of two close-set spirals. The lines of growth 

 pass forward near the suture. 



A worn specimen bears a striking resemblance to the Miocene F. 

 spinifer Bellardi of the Italian Tertiary. The large number of spirals 

 on our species easily distinguish it even when worn. 



A single specimen of this species occurs in the collection of the 

 Philadelphia Academy of Sciences. 



The protoconch appears to be of the normal Fusus type, but there 

 is a suspicion of an indication that the riblets which appear on the last 

 part of the whorl extend farther up on the protoconch than is normal. 

 This suggests relation to F. (Heilprinia) caloosaensis. The form 

 of the shell indicates, however, a normal Fusus. All the whorls are 

 round. The ribs are rounded and more than their width apart. Inter- 



