AUTHOR'S ABSTRACT OF THIS PAPER ISSUED BY 
THE BIBLIOGRAPHIC SERVICE, DECEMBER 22 
THE OLFACTORY REACTIONS AND ORGANS OF THE 
MARINE SNAILS ALECTRION OBSOLETA (SAY) 
AND BUSYCON CANALICULATUM (LINN.) 
MANTON COPELAND 
Searles Biological Laboratory, Bowdoin College 
CONTENTS 
Hees SOTA EOCHUEC GL CUA ees etd, Sea ON hod RR Se eae ve 177 
RIESAE x SLIM EMIS oP os. spo A EE hee OA Ree te ere 178 
MECETIONTODSOLE DAA... cee ee eC ee ee er ee Eee erste eae 178 
ieReactions to olfactony stimuli: i404 sete wate ase eek ae oo) 179 
2. Organs sensitive to food extracts....¢.....0.0.eeeceeeeececeeee 184 
he tentacless 01. aeay att eee i ENN a ieee. CRS oer 184 
ADING PO OG sc cE OIE Cae 8 Ce el 186 
The siphon....... ee cia NEC) Meeaat, caches Nich tc Bee mee a ca 187 
Conclusions........ SME SiS AAS See Ene Re ee Sake 191 
IBIS OO aonalel bE RUIAGIA CG Aa ecb ooce oat buy onedns oaneoogueoaausenobour 192 
1. Organs sensitive to food extracts.........:....... Boe Danert ose 192 
The foot, mantle and tentacles........... eens ade ek ee Pee 193 
(Bhersiphon Syston. ss AMA eee ee eee An bree trae Sed ded RUS a3 194 
Peeliheuingdineeot distant 100d gens eae: ciacrin eee EME AOS AAS 196 
She OSPhTad UM « 4.) serch eo ao a erie peletatrere 208 
MT EPIDISCUSSTON «01... ...5, aavats sts aysce anes ee eRe “SAG CRN RE enc eects aad 216 
1. Movements resulting from olfactory stimulations................. 216 
Deebaste: amd: smell) ccSncteeke se RARE or Sess cs ipaste ato eclleshe wens 3 221 
BUN Sy ULNA TAN TY Stel act acua ss sae SOME RRR SPR A oso mean ies ery cebictde eh poe 224 
Wem inivenaGure cited: <5. -..85 saeeae Ae RP ees nic icaers scoot east teeters 22nd 
I. INTRODUCTION 
It has long been recognized by fishermen and naturalists 
that many species of marine carnivorous snails are conspicuously 
successful in finding food. To the former they may be a source 
of considerable annoyance through their habits of entering lobster 
pots, eating fish entangled in nets and feeding upon bivalve 
mollusks, sometimes doing so much damage that like the whelk 
and oyster drill they become serious pests. The extensive 
177 
THE JOURNAL OF EXPERIMENTAL ZOOLOGY, VOL. 25, NO. 1 
