362 



SHELLS AND SHELL-FISH. 



PART II. 



the terminal 



Vebmetus. Shell tubular, contorted 

 whorls spiral. 



G. lumbricalis. Sow. Man. f. 345. 



Vermillia Lam. The terminal whorls not spiral. 

 V. triquetra. Sow. Man. f. 7. 



Siliquaria Brug. Terminal whorls spiral ; a narrow 

 punctured fissure on one side of the sheD. 

 S. anguina. Sow. Man. f. 1. 



Tribe 2. MACROTRACHI^. 



Animal with one or two long respiratory siphons, either 

 distinct or united; the margins often furnished with 

 little teeth. 



Family 1. PHOLID^. 



SheU bivalve, sedentary, generaUy perforating, opening 

 at one or both ends ; the valves often prolonged into a 

 shelly tube, sometimes of great length : representing the 

 TuhuUbranchia. 



Aspergillium. Animal living in sand, and not fixed 

 on or upon any other substance : inhabiting a calca- 

 reous tube. 



Aspergillium Lam. Shell tubular, nearly straight, one 



