DREDGING OFF PORTINCROSS, AYRSHIRE. 193 



SCROBICULARIA ALBA (Wood) ; — 18, half to full- 



grown, at one 

 haul. 



Corbula GIBBA, Olivi ;— a few very young. 



Panopea plicata (Mont.); — valves at each haul; 



several perfect ; none 

 living. 



Dentalium entalis, L.; — 2 or 3 small, living. 



Rissoa abyssicola, Forb. ; — some 25 obtained, mostly 



worn; one or two 

 fresh ; none living. 



inconspicua, Aid.; — one dead. 



vitbea (Mont.); — i obtained, somewhat en- 

 crusted ; one living. 



Turritella terebra (L.) ; — several small, living. 



var. nivea, Jeff. ; — one living. 



Odostomia conoidea (Broc); — one dead and worn. 



Natica Alderi, Forb. ; — several very young, living. 



Aporrhais pes-pelecani, L.; — one young, living. 



Pleurotoma brachystoma, Phil.; — 3, all living. 



Cylichna nitidula, Lov.; — several dead. 



cylindracea (Penn.) ; — plentiful, living. 



Bulla utriculus, Broc; — one dead. 



Philine scabra (Mull.); — several living. 



punctata (CI.); — 2 dead, but fresh. 



The only other objects of interest got during the 

 day were a live example of Bryssus lyrifer, Forbes, 

 a deep-water species of heart-urchin, and a number 

 •of the foraminifer Astrorhiza limicola, Sandahl. 



