TRIBE TUBICOLA. 5 
FISTULANA. 
With a tubular testaceous sheath, tumid, and closed posteriorly 
attenuated at the anterior end, open at the summit, and contain- 
ing an unattached bivalve shell; valves of the shell equal, and 
gaping when shut. 
F.Crava. Lam. 1.—Bl. t. 81. f. 3.—Reeve. t. 19. Tube 
straight and slender, club-shaped ; the valves of the shell white and 
elongated, their extremities somewhat arched, 33 —Indian Ocean.* 
F. Grecata. Lam. 3.—Trerepo Cuava. Gen. 3478.—D. p. 
1090.—W. ¢. 38. f. 4. Tubes club-shaped, flexuous, grouped, 
brownish ; valves narrow and arcuated ; with two other unguiculated 
and serrated appendages. 23.— Coromandel. 
F. Lacenuta. Lam. 4.—E. t. 167. f. 23. Small, laterally 
affixed ; tube flask-shaped, articulated by transverse segments. 1+. 
Extremely rare. 
SEPTARIA. 
With a very long testaceous tube, gradually attenuated an- 
teriorly, and appearing as if divided internally by vaulted un- 
Jinished partitions ; anterior end of the tube terminated by two 
other slender tubes, which are not divided. 
S.ArenariaA. Lam.—Serputa Potytuaramia. Lin. 1269.— 
TEREDO GiganTEA. D. p. 1087.—W. t. 38. f. 1.—Mart. f. 6, 
11. Tube taper, white, subcylindrical, nearly straight, thick, 
diaphanous, wrinkled transversely ; structure radiated : 2 internal 
tubes at the summit ; inside yellowish .. 30..13.—IJndian Ocean. 
TEREDO. 
Tube testaceous, cylindrical, and tortuous, pervious at both ex- 
tremities, and covering the animal.—Shell bivalve, placed exter- 
nally, and outside the tube. 
T. Navauis.* Lin. 1267.—D. p. 1089.—Lam. 1.—E. t. 167. 
f. 1 toi.—Turt. Biv.t. 12. f. 1, 2, 3.—Sow. G.— Reeve. t. 21. 
—W. t. 38. f. 2. Subcylindrical, smooth, whitish, rather flexuous 
and slightly tapering, semiconcamerated near the smaller end: the 
valves ear-shaped, one of them with a curved denticle on the margin 
above the teeth: pallets spoon-shaped, convex without, concave 
within, terminating at one end in a linear elongation, and at the 
other with a thick callus.—Hurope.* 
$ For Lamarck’s ¥. Corniformis see Teredo. 
4 The Navalis of continental authors appears to differ. See Phi- 
lippi. p.2. t. 1. f. 9.— Poli. 3. t. 57. f. 4, 5, 6.— Palmules 2. 
simple and semilunate.” 
