Species of Teredo. 27 



the T. navium of Vallisnieri; judging from the figure that 

 pallet has a shorter stalk and is more tapering at the broader 

 end than is customary in this species. 



T. Mpennata. — This is not the shell delineated in Turton's 



* Conchological Dictionary ' (figs. 28, 40) . The valves look 

 like those of the erroneous navalis of Spengler (Skriv. Nat. 

 Selskab. vol. ii. pt. 1, pi. ii.), the pallets of which (perhaps 

 they are worn) seem unlike any of those figured in the 



* Iconica,' and remind one of the original drawing of the lost 

 pahnulata. The two pallets delineated in the ' Iconica ' 

 surely belong to two different species, the short-stalked one 

 possibly to Gray's carinata. I could not find them in the 

 British Museum, as stated in the text. Mr. Edgar Smith 

 assures me that he can find no shell there under this name 

 which agrees with fig. 3, a, or any two dissimilar pallets like 

 those represented by fig. 3, h. 



T. Stutchburii. — The truncated pallet seems broken, yet is 

 not so really. As Blainville (Diet. Sci. Nat. vol. xxxii. 

 p. 268) professedly described this shell from a manuscript 

 species of Leach's, which formed part of our national collec- 

 tion, it may reasonably be supposed that the identification is 

 correct; yet Blainville asserts that the pallet tapers* rapidly 

 from the first joint to the last, which is not the case in the 

 specimen marked as Leach's type, nor in the figure supposed 

 to represent it. 



T. carinata. — This shell was no manuscript species as sup- 

 posed. The name was published by Gray as that of a new 

 species, and by Blainville, as of Leach's manuscript, almost 

 contemporaneously. Gray^s monograph appeared in Taylor's 

 ' Philosophical Magazine ' for December 1827 (p. 411, copied 

 in Hanley's ' Recent Bivalves,' p. 4) ; the volume (lii.) of 

 the ' Dictionnaire des Sciences Naturelles ' bears date 1828 ; 

 both authors described from an example in the British Museum, 

 presumably the same as that roughly delineated by Sowerby, 

 who unfortunately represents for it the Teredo previously 

 published (1819) hj Turton as T. hipennata (Conch. Diction, 

 p. 184, figs. 38, 39;, 40). But Gray indicates that the base 

 (or stalk) of the pinnately articulated pallet is short, whereas 

 it is represented by both Turton and Sowerby as decidedly 

 long ; evidently, then, the carinata of Sowerby is not that of 



* The drawiug is scarcely to Le termed a likeness. 



