TEREDINHXE. 



" T. carinata, Gray/' is composed of the valves of 

 T. malleolus and the pallets of T. Stutchburii, De Blain- 

 ville. 



T. BIPINNATA, (bipennatd) Turton. N? 2-2-7 



Valves resembling those of T. megotara, but more convex 

 and of a thinner texture ; the striated strip is longer ; the 

 furrow is reddish-brown, delicately and closely marked across 

 with curved lines, and divided down the middle by a slight 

 groove ; the auricle is equally large and prominent, but does 

 not reach quite so far down as in that species, and it is sepa- 

 rated inside by a well defined shelf or ledge : pallets five times 

 the length of the valves ; blades composed of from 40 to 50 

 narrow funnel-shaped joints, set one within another, with 

 feathered edges which are fringed on each side ; stalk varying 

 in length (being sometimes only as long as the blade, and at 

 other times three times as long), quill- shaped, cylindrical, and 

 slender, minutely tuberculated, and often closely annular or 

 tracheiform towards the blade : sheath thick and solid, increas- 

 ing rapidly ; neck finely and closely wrinkled but not lami- 

 nated. Size of the valves about the same as in T. megotara. 



HABITAT : Drift wood at Guernsey (Lrukis) ; Exmouth 

 (Turton); Beachy Head (Dennis); British Channel 

 (Bulwer); Scarborough (Bean); Roundstone, Conne- 

 mara (Walpole); Miltown-Malbay, Clare (Harvey); 

 Youghal (Ball); Waterford (Humphreys). On the 

 French coast it has been noticed at Cherbourg and in 

 the Gulf of Gascony by Fischer, at Pouliquen by Petit, 

 and at Croisic by Cailliaud. Dr. Philip Carpenter has 

 also recorded it from Vancouver's Isle and California, 

 and I received specimens from him as West- Indian : 

 there seems to be no good reason for considering it 

 Sumatran. It occurs with T. cucullata. 



Dr. Turton stated that the feathered pallets could be 

 ejected and retracted at pleasure, and that they were pro- 

 bably " instruments of absorption, as the animal is fur- 



