head slightly notched in front; tentacles wide apart; eyes at base of 

 tentacles on thickened shoulder; syphon long and recurved. 



BUCCINUM CINEREtJM Say 



Pl. V. Fig. 35. Length 25 mm. 



This shell is found along the entire coast. It is more abundant 

 south of Cape Cod; north of the Cape it is found in restricted localities. 

 A colony has been found in the Gulf of St. Lawrence. The northern 

 form has a shorter shell. The tentacles are very long, nearly meeting 

 at their bases, they are thickened half way up where the eyes are 

 placed, beyond this the tentacles become attenuated and pointed. 

 The body is cream-colored, dotted with light drab above, the creeping 

 disk is yellow. The creature is sluggish in movement. 



FUSUS ISLANDICUS Gemlin 

 PI. V. Fig. 36. Length 70 mm. 



Foot very wide, squared in front, rounded at sides, slightly rounded 

 behind; yellowish white, head broad, tentacles wide apart, eyes on 

 prominent thickenings near base. In crawling the head and neck are 

 freely separated and project beyond the foot. 



FUSUS PYGM^EUS Gould 

 PL VL Fig. 37. Length 24 mm. 



The shell follows the outline of F. islandicus but is diminutive 

 in size, a full-grown specimen measuring 7-8 of an inch in length. 

 There are minor differences between it and its giant relative, as pointed 

 out by Gould. The animal is pure white with black mottlings as in 

 B. undatum. The foot is long and narrow, truncate in front, rounded 

 behind. Forbes and Hanley figure the animal of Fusus propinquus 

 and compare it with F. pygmxus. In F. propinquus the tentacles 

 are shown united at their bases whereas in F. pygmseus they are wide 

 apart. Jeffreys regards F. pygmxus as a variety of F. islandicus 

 and says "It seems to bear the same relation to F. propinquus as 



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