The Nidus of Lunatia-heros. 



By Frank J. Seidensticker. 



Lunatia-heros. 



Qass — Gasteropoda. Family — Naticida. 



Sub-class — Frosobranchiata. Genus — Lunatia. 



Sand collars, or as the children of Cape Cod call them, Tom- 

 cods' nests, we are told by the authorities, are found on sandy 

 beaches along the entire New England coast, but much more sel- 

 dom to the south than to the north of Cape Cod. The diversity 

 of nomenclature given by the scientists of the past to these struc- 

 tures seems to indicate an ignorance of their true nature. In Dr. 

 A. A. Gould's Report on the Invertebrata of Massachusetts (State 

 doc. 1870), he includes the following list of names given by differ- 

 ent authorities : 



Flustra arenosa. Ellis. Zooph. and also his Corallines. 



Flustre areneuse. Lamouroux Polyp, flex. 



Flusire Arenacee. Blainv. Diet, dcs Sc. Nat. 



Eschar a lutosa. Pallas. El. Zooph. 



Eschar a Millepora arenosa Anglic a. Ray. Syn. 



Alcyonium arenosum. Gmelin Syst. Nat. — Shaw Nat. Misr. 



Discopora Cribrmn. Lam. An. Sans Vert. 



