MARINE MOLLUSCA; SCAPHOPODA. 197 



Fam. Pholadidae. 



Pholas dactylus, L. r.; Clyde (Sra.) : Ardrossan : Heads of Ayr (d.) (0.). 

 Barnea [ = Pholas] Candida (L.). r.; Rothesay (Fraser): Ardrossan to Ayr 



W (c.). 



Zirfaea [ = Pholas] crispata (L.). mod. c. locally. 

 Xylophaga dorsalis (Turt.\ freq. in drift wood. 



Fam. Teredinidae. 



Teredo norvegica, Speng. Holy I. wreck of old pier (G. & M. H.) : Arraii ; 



Ayr (Som.) : Ardrossan pier (Martin) : Cumbrae (R.). 

 T. navalis, L. Carrick pier (Kirsop) : Fairlie (Bryce). 

 T. megotara, Han. Arran (L. J.) : L. Goil (M.). 



Fam. Pandoridae. 



Pandora inaequivalvis var. pinna, Mont. [ = obtusa]. L. Fyne (Bar.), very 

 r., not since corroborated. 



Fam. Lyonsiidae. 



Lyonsia norvegica (Chem.). Sparingly dist. 

 var. elongata, Gray. Clyde 18 f. (Mar.). 



Fam. Anatinidae. 



Cochlodesma [ = Thracia] praetenue (Pv.lt.}. Scarce throughout the 



district. 

 Thracia fragilis, Penn. [ = papyracea]. Not unc. 



var. gracilis, Jeff. Off Tarbert, L. Fyne 16 f. (Som.). 

 var. villosiuscula, Macg. Widely diffused, with the type. 

 [T. pubescens (Pult.}. Arran (Sm. & L.), not since corroborated.] 

 T. convexa (W. Wood.}. Very r. (L) : Ayr (Sm.) : single valves Arran (A.) : 



Lamlash (L.) : Campbeltown L. valve (R.) and 8 f. (Gray) : L. Fyne 20 f. 



(Mar.) : Brodick 40 f. (d.) (Som.) : L. Goil 24-40 f. (M.) : Kyles 15-20 f. : 



Strachur 25 f. : 3 (L} juv., bet. Sanda and Bennan Hd. 25-30 f., one full 



grown (I.) (P.). 

 T. distorta (Mont.). mod. c., but local. 



Fam. Cuspidariidae. 



Cuspidaria [ = Neaera] abbreviata (Fork.). r.; L. Fyne (M'A. Bar. S. N.) : 

 St. Catharines : Kilbrennan Sd. 60 f. : Brodick 40 f. (Som.) : Inchmarnock 

 30 f. (Hoy.) : Minard 15-70 f. (M.) : Cumbrae 80 f. (R.) : Kyles 18 f. : 

 Strachur 35-56 f (K.) : Inveraray 10-40 f. : Skipness 29 f. (C.). 



C. COStellata (Desk.).?.; L. Fyne 40-70 f. (M'A. Bar. N. R.): Cumbrae (R,): 

 Lamlash 20 f. : Brodick 40 f. : Tarbert 19 f. (Som.) : Battle I. 40 f. (S.) : 

 Minard: Furnace 10-25 f. (M.) : off Skate I. 105 f. (Hend.) : Tarbert 

 20-60 f., Otter 5 (I.) : Skipness 29 f. (C.). 



C. cuspidata (Olivi.}. Widely dist., but very scarce. 



SCAPHOPODA. 



Fam. Dentalidae. 



Pulsellum [ = Siphonodentalium] lofotense (M. Sars.). r. ; L. Fyne 100 f. (M.): 

 Cumbrae (R.) : Strachur 22-56 f. (K.) : Skate I. 107 f. (S.) : Tarbert 75 f. 

 (Som.). 



var. affine, M. Sars. OS Skate I. 90-100 f. (M.) : Strachur, 56 f. (K.) : 

 very r. 



Dentalium entalis, L. Gen. dist. aud c. 



