A DAY WITH THE DREDGE AT MACHRIE BAY. 171 
Helcion pellucidum (L.). 
», pellucidum, var. levis 
(Penn.). 
Capulus hungaricus (L.). 
Rissoa abyssicola, Forb. 
»» imconspicua, Ald. 
»»  proxima, Ald. 
,;  Vitrea (Mont.). 
Turritella terebra (L.). 
Odostomia pallida (Mont.). 
< rufa, var. fulvocincta 
(Thomp. ). 
Odostomia Scille (Scac.). 
Natica Alderi, Forb. 
,  Montacuti, Forb. 
Aporrhais pes-pelecani (L. ). 
Pleurotoma costata (Don.). 
rp brachystoma, Phii. 
io turricula (Mont.). 
Cylichna umbilicata (Mont. ). 
. cylindracea (Penn.). 
Actzon tornatilis (L.). 
Bulla utriculus, Broc. 
Philine scabra (Miill.). 
Shore search at Machrie Bay enabled me to add the following 
to the list of species occurring in the locality. 
It will be observed 
that in several instances a species has been repeated, as I have 
thought it best to keep the two lists independent of each other :— 
Pecten maximus (L.). 
Mytilus edulis, L. 
Pectunculus glycymeris (L.). 
Lucina borealis (L.). 
Cardium edule, L. 
»» » nhorvegicum, Speng. 
Venus exoleta, L. 
»,  fasciata (Da C.). 
3,  casina, L, 
», gallina, L. 
Tapes pullastra (Mont.). 
Tellina crassa (Penn.). 
;, . balthica, L. 
» tenuis, Da C. 
Mactra subtruncata (Da C.). 
Lutraria elliptica, Lmk. 
Solen siliqua, L. 
Mya truncata, L. 
Patella vulgata, L. 
»  vulgata, var. depressa, 
Penn. 
Trochus magus, L. 
» cinerarius, L. 
,,  zizyphinus, L. 
Littorina obtusata (L.). 
“ rudis, Maton. 
7 littorea (L.). 
Purpura lapillus (L.). 
Buccinum undatum, L. 
Fusus antiquus (L.). 
» gracilis (Da C.). 
Nassa reticulata (L.). 
Cyprza europea, Mont. 
Deducting, then, the three species—Venus gallina, Mactra 
subtruncata, Mya truncata—common to both lists, the total 
number of species and varieties of Mollusca obtained in the day’s 
work was 80. 
