TURB1NACEA. 281 



Cirripedes, Lam. — Descr. A cylindrical tube, composed of six 

 elongated valves jointed together side by side, striated longitudi- 

 nally, surrounded by concentric rings ; aperture circular, enclosed 

 by an operculum of four valves, placed perpendicularly in an 

 epiphragm. — Obs. The Tubicinellse are found with nearly the 

 whole shell buried in the thick skin of the whale. T. Balgenarum. 

 TUBICOLARIA. Lam. ( 1 \iba, a tube ; cola, an inhabitant.) A 

 family of the order Conchifera Dimyaria, Lam. consisting of 

 bivalves soldered as it were within, or connected with, a testa- 

 ceous tube. The genera contained in this family may be thus 

 distinguished. 



1. Aspergillus!. Valves fixed, tube perforated and fringed. 



Fig. 44. 



2. Teredina. Valves fixed, prominent, tube closed at one 



end. Fossil. Fig. 46, 47. 



3. Clavagella. One valve fixed, the other free. Fig. 45. 



4. Teredo. Both valves free, tube open at both ends. 



Fig. 48, 49. 



5. Fistulana. Valves free, tube closed at one end, straight, 



long. Fig. 53, 54. 

 6*. Gastroch^ena. Valves free, tube closed at one end, short, 

 bulbous. Fig. 52. 

 TUB1VALVES. Bl. Shells composed of two valves connected in 



a tube, corresponding with the family Tubicolse of Lamarck. 

 TULIPARJA. Sw. A sub-genus of " Coronaxis," Sw. Lardn. 



Cyclop. Malac. p. 311. 

 TURBINACEA. Bl. The sixth family of Poly thalamacea, Bl. con- 

 taining the genera Cibicides and Rosallites, microscopic Forami- 

 nifera. 

 TURBINACEA. Lam. A family of the first section of the order 

 Trachelipoda, Lam. containing the following genera. 



1. Solarium. With umbilicus reaching to the apex ; includ- 



ing Bifrontia and Orbis. Fig. 353 to 356. 



2. Rotella. A callosity on the underside. Fig. 357. 



3. Phasianella. Oval; operculum shelly. Fig. 367. 



4. Planaxis. Columellar lip flat; aperture notched. Fig. 365. 



