ee ee Ie eee ee 
a 
Mr. Jeffreys’ Synopsis of British Species of Teredo. 125 
Jardin des Plantes. The localities of both the last-mentioned 
specimens are unknown. 
ll. T. fusticulust, n. s. 
Tube short and straight, with a slight calcareous lining, which 
is not easily separated from the wood. It is thickened inter- 
nally at the opening, and has a few transverse wrinkles in 
that part. Valves round, thin, compressed ; body smooth, 
glossy, white under a brown epidermis; anterior auricle of 
moderate size, angle about 50°, strie numerous; posterior 
auricle round, expanded, and appressed to body, internal edge 
well defined ; fang broad, obtuse; tubercle small and sunk ; 
apophysis thin and narrow. Pallets club-shaped, formed of 
several transverse layers, and externally tuberculate ; stalk 
twice the length of pallet. 
Dimensions: length (of valves) 4"; breadth nearly as much. 
Hasirat: in Cedrela odorata from Leith (Jeffreys). 
B. Having compound pallets (Xylotrya, Leach). 
12. T. cucullatat, n. s. (Norman, MS.) 
Tube long, thick, not easily detached from the wood, internally 
wrinkled near the opening. Valves roundish-oval, rather 
_ convex; body marked transversely, but regularly, with a few 
. strize or impressed lines; anterior auricle small, angle obtuse, 
strie numerous; posterior auricle dilated and appressed, 
having its apex nearly on a level with the crown or umbo of 
the valve, inner edge free and overlapping the body; fang 
broad; tubercle small; apophysis sickle-shaped. Pallets 
composed of 20-30 calyciform joints or cuculli, which are 
broad on the outer surface, and slightly overlap one another 
in succession, lateral edges setaceous, with short filaments ; 
stalk cylindrical, of same length as pallet. 
Dimensions : length (of valves) 3"; breadth 8," 
Hasirat: in drift fir-wood, Guernsey (Lukis) ; Sussex coast 
(Dennis) ; in teak, with the next species, at Belfast (Thompson). 
The pallets resemble those of 7. minima, Blainville (T. pal- 
mulata, Philippi), in having the front margin quite plain; but 
they differ in the joints being of nearly equal breadth through- 
out, and (especially in the earlier stage of growth) being much 
more numerous and compact. The pallets of 7. cucullata are 
also three or four times as long as those of T. minima. The tube 
and yalyes of each species are easily distinguishable. 
