120 PHOLADIDiE. 



sides of the ships, whilst careening, in great numbers, both 

 at Poole and Weymouth." Montagu, after an accurate 

 description of it, adds, " Whether this species can strictly 

 be said to be British may be doubted." The careful and 

 long-continued observations of our living naturalists confirm 

 the justice of these doubts ; it being universally now ac- 

 knowledged to be solely taken, " occasionally alive " 

 (Bean), from vessels which have entered our harbours from 

 foreign ports, or " from wood washed ashore only " 

 (Thompson), as was the case with the specimens recorded 

 in the " Annals of Natural History," vol. xiii. p. 434, 

 to have been discovered " in water-logged mahogany, 

 near Killala, Sligo ; also on the coast of Clare (W. 

 Thompson). Montagu has remarked the fact, that whilst 

 the general habit of the sliipworms is to bore parallel with 

 the grain, the Pholas perforates the wood across the grain. 

 Although known to Liunaius, and referred to in his 

 " Systema Naturae," it was first clearly characterised by 

 Parsons who, in the " Acta Anglica," gives us an excellent 

 representation of it, not, however, as an English shell, but 

 as avowedly taken out of a Spanish vessel. 



P. Striata, Linna3us. 



Pholas striata, Linn. Syst. Nat. 1111.— Mont. Test. Brit. p. 26 and 559.— 

 Dorset Catal. p. 27, pi. 1, f. 7. — Linn. Trans, vol. viii. p. 31. 

 — TiiRT. Conch. Diction, p. 147 ; Dithyra Brit. p. 11. — Brit. 

 Marine Conch, p. ."Jl. — Bkown, Illus. Conch. G. B. p. 115, pi. 

 49, f. 5, 8.— Wood, General Conch, p. 83, pi. 16, f. 1, 2, 3, 4, 

 8.— Mawe, Conch, pi. 3, f. 1.— Index Testae, pi. 2, Phol. f. 7. 

 — Rees, Cyclop. Shells, pi. 8. — Sowerby, Genera Sh. Pholas. 

 f. 1, 2.— Reeve, Conch. System, pi. 24, f. 2. 

 „ nana, Pultenev, Dorset, p. 27. 



„ ptmilla, Linn. Syst. Nat. p. 1111. — Donov. Brit. Shells, vol. iv. pi. 117. 



— Chemn. Conch. Cab. vol. viii. p. 3G5, pi. 102, f. 867 to 871. 



— Sr-ENGLER, Skiivt. Naturhist. Selskab. vol. ii. part 1, p. 95. 



— Dillw. Recent Shells, vol. i. p. 38. 



,, lifffiorum, Spenoler, Breschaft. Berlin Gcs.Naturf. vol. iv. pl.5,f. 1 to 5. 



„ conoiJes, Fi.em. Brit. Animals, p. 457. 



,, davata, Lam.\rck, Anira. s. Vert. ed. 2, p. 46 (excluding var. C.). — 

 Hanl. Recent Shells, p. 7. — Enyclop. Method. Mollusq. 

 pi. 170, Phol. f. 1,2, ?,. 



