5 a bin 
rash b ae iit 
ATEN Ser RR ee ea 
Mr. Jeffreys’ Synopsis of British Species of Teredo. 123 
of T. megotara, that Dr.Lukis proposed the name of “ microtara” 
for this species. Specimens in cork are frequently encysted. 
5. T. malleolus+, Turton. 
Hasirat: in floating wood thrown up on the coasts of Car- 
marthen Bay (Jeffreys), Guernsey (Lukis), Sussex (Dennis). 
6. T. excavatat, n.s. (Lukis, MS.) 
Tube short, rather solid, and detached from the wood, slightly 
curved, jointed at intervals, with a very few internal trans- 
verse wrinkles at the opening, and an indistinct siphonal 
ridge. Valves roundish-oval, thin, compressed ; body glossy, 
~ marked with distant, but regular and fine, striz or impressed 
lines ; anterior auricle placed nearly at a right angle with the 
insertion of the fang, strie rather numerous and waved ; 
posterior auricle dilated and somewhat reflected, apex nearly 
on a level with the crown or umbo of the valve, inner margin 
free and well defined ; tubercle slight, and not visible when 
the valve is in a. supine position; fang obtuse; apophysis 
thin and narrow. Pallets long and narrow, bifid in front to 
nearly half their length, with two corresponding tubular 
~ cavities which terminate in separate points like the prongs of 
a steel fork; underneath they are abruptly sloped towards 
the bifurcate points, and closely striated in a longitudinal 
direction ; stalks nearly as Jong as pallets, pointed at one end 
and at the other merging into the pallets. 
Dimensions: length (of valves) ,3;"; breadth 4," 
Hasirat: in drift fir, Guernsey (Lukis), Sussex (Dennis) ; 
rare. In the shape of the pallets this species is allied to 7. 
elongata. 
7. T. bipariitat, n. s. 
iy v8.6 <i ? Valves oval, thin, compressed, covered with a 
brownish epidermis ; body smooth and glossy ; anterior auricle 
moderately developed, angle rather obtuse, strie very nume- 
rous and crowded ; posterior auricle rounded, small but pro- 
minent, appressed to body, apex placed below the crown, 
internal margin indistinct ; fang narrow and pointed ; tubercle 
small ; 4 2 narrow. Pallets resembling those of T. 
pedicellata, but longitudinally divided into two equal parts by 
a deep furrow ; stalk cylindrical, rather longer than pallet. 
Dimensions : length (of valves) 4"; breadth 3". 
Hasirat: in Cedrela odorata (or “West India Cedar”), 
thrown ashore, perhaps by the gulf stream, at .Guernsey, with 
T. spatha (Lukis). 
; 8. T. pedicellata, Quatrefages. 
Hasrrar: Channel Isles, in submerged wood (Lukis) ; in the 
