NATURAL SCIENCES OF PHILADELPHIA. 487 



A very complete account of this species is given in Cailliaud's Monograph, 

 contained in Guerin's Magazine. M. Calliaud considers the following species 

 (B. 1 a t a) a synonym : not being entirely satisfied that such is the case, I 

 have not united them under one description. A full anatomical description, 

 splendidly illustrated, is contained in Deshayes' Mollusca of the Exploration 

 of Algeria. 



2. B. lata, Broderip, sp. 



Clavagella lata, Broderip, Zool. Proc. p. Ill, 1834. 



" " Trans. 1, p. 265, t. 30, f. 8-10, 1835. 



Owen, (Anatomy,) Trans. 1, p. 267, t. 3, f. 11-16, 1835. 

 Miiller, Svn. Test. Viv. p. 240, 1836. 

 Han ley, Desc. Cat. p. 2, t. 11, f. 4, 1842. 

 Deshayes, Traite, Elem. p. 25, t. 1, f. 12-14, 1843-50. 

 Cailliaud, Chenu, Illus. Conch, p. 5, t. 3, f. 7. 

 Catlow, Conch. Nomenc. p. 2, 1845. 

 H. and A. Adams, Genera, ii. p. 338, 1856. 

 Bryopalata, " " " ii. p. 649, 1858. 



Gray, Zool. Proc. p. 315, 1858. 

 Description. "B. camera rotundato-ovata, valva libera, latiuscula, sub- 

 trigona, subconvexa, externa concentrice rugosa, intus nitente ; umbone sub- 

 rotundato. " Broderip. 

 Hab. Indian Ocean, Pacific. 



3. B. Melitensis, Broderip, sp. 



Clavagella Melitensis, Broderip, Zool. Proc. p. 116, 1834. 



" " Trans, i. p. 265, t. 35, f. 5-8, 1835. 



Miiller, Syn. Test. Viv. p. 240, 1836. 

 Cuvier, Regne Anim. (Audouin's edit.) t. 117, 



f. 1, a, b, c, </. 

 Hanley, Desc. Cat. p. 2, t. 11, f. 3, 1842. 

 Cailliaud, Guerin's Mag. Zool. t. 50, f. 4, 1842. 

 " 111. Conch. Chenu, Clavagella, p. 4, 



t. 1, f. 5, and t. 3, f. 1-6. 

 Forbes, Rep. iEge;m Invert, p. 142, 1843. 

 Deshayes, Expl. Sci. de l'Algerie, Moll. p. 14, 



t. 1, f. 2. 

 Catlow, Conch. Nomenc. p. 2, 1845. 

 H. and A. Adams, Genera, ii. p. 338, 1S56. 

 Gray, Figs, Moll. Anim. v. t. 340, f. 9, and t. 341, 

 f. 1, 1857. 

 Clavagella angulata, Philippi, Enum. Moll. Sioil. ii. p. 2, t. 13, f. 3, 1844. 

 Bryopa Melitensis, H. and A. Adams, Genera, ii. p. 649, 1858. 

 Description. "Testa subrotundata, convexa, rugosa, intus subnitens ; tubo 

 longitudinaliter corrugate. ' ' Broderip. 

 Hab. Greece, Venice, Malta, Sicily. 



Dr. J. E. Gray, in Proc. Zool. Soc. 1858, writes this as a synonym to 

 B. a p e r t a . I have followed Deshayes and Cailliaud in considering it distinct. 

 Deshayes has detected differences in the animals of the two species, and the 

 shells may be readily separated by the differences in shape of the valves, 

 which appear to be permanent. 



Subgenus Dacosta. 



4. B. Australis,* Sowerby, sp. 



Clavagella Australis, Sowerby, Stuchbury Cat. App. t. 1, f. 1.' 

 Hanley, Desc. Cat. p. 2, t. 9, f. 22, 1842. 

 H. and A. Adams, Genera, ii. p. 338, iii. t. xci. f. 3, 

 a, b, c, 1856. 



1861.] 



