2 TESTACEOUS MOLLUSCA. 



A. Nov^ Zelandi^. Lam. 3. — Fav.t.79. E. White clouded 

 •witli flesh colour ; tube wrinkled annularly and suddenly increasing 

 below the perforated disc to a size superior to that appendage which 

 is small and without a border. — Smaller than the preceding. — New 

 Zealand. 



A. Agglutinans. Lam. 4. Tube twisted, sub-clavate, with 

 other bodies attached to it ; disc without a border, its surface 

 roughened by numerous minute tubes. 3. — New Holland.^ 



CLAVAGELLA. 



Sheath tuMdar, testaceous, attenuated, and open before ; termina- 

 ting posteriorly in an oval, subcompressed club, {often roughened 

 by spiniform tubes) ; club showing on one side a valve of the shell, 

 attached to its walls ; the other valve unattached, in the sheath. 



C. Aperta. Sow. G. f. \, 2, 3, 4. — Desh. in Lam. 6. p. 25. — 

 Mag. de Z. 1842. t. 49, 51, tj- 50./. 1, 2. Tube short, very 

 clavate, very widely open above ; aperture infundibuliform, its mar- 

 gin wavy, foliaceous, scalloped ; the stages of growth evidenced by 

 similar markings : valves triangular, pearly and widely gaping, 

 the unattached one thick and transversely wrinkled. 



C. Elongata. Brod. Z.T. 1. t. 35./. 1 to A.^Mag de. Z. 

 1842. t. 50. /. 3. Chamber elongated ovate ; unattached valve 

 elongated, subtriangular, convex, with strong concentric wrinkles, 

 glossy within : umbone acute. — Pacifici 



C. Lata. Brod. Z.T. 1. 1. 35./. 8, 9, 10. Chamber rounded 

 ovate ; free valve rather broad, subtriangular, rather convex, concen- 

 trically wrinkled ; glossy within in both valves, and the muscular 

 impressions strong : umbone rather rounded. — Pacijic- 



C. Melitensis. Brod. Z. T. 1. /. 35. /. 5 ^o 8. — Mag.de 

 Z. 1842. t. 50./. 4. Shell rather rounded, wrinkled, rather glossy 

 within : tube longitudinally wrinkled. . . Malta. 



C. AxjSTRALis. Sow. in Appendix to Stutchbury's Catalogue, 

 t. 1. /• I. • .Tube simple and rounded; free valve oblong and 

 rather convex. 



Clav. Balanorum, Schacchi. — Ajinals Nat. Hist. — Mag. de 

 Zool. 1842. t. 52. Valves subtriangular and wrinkled ; receptacle 

 oval, rounded, produced above into a subquadrangular tube. — Pau- 

 silippe in masses of Balani. 



sum. 



1 Perhaps Lister, t. 548./, 3, may be added as a species. Mr. Gray 

 has proposed its separation as A. Listeri. See too A. Span 

 Sow. G.— Reeve, t. 17. f 3, 4, 5. A. Dichotomy. Gray, cjr 



2 Caillaud states that this is not distinct from Aperta 



OS' 



