GALEOMMA. 105 



G. TuRTONi, Sowerby. 



Plate XXXVI. fig. 11, and (Animal) Plate 0. fig. .5, 



Gahomma, Turton, Zool. Journal, vol. ii. p. 3G1. — Ann. Nat. Hist. vol. iv. 

 p. .02, pi. 3, f. 4. 

 „ Turtoni, Sovverb. Zool. Journ. vol. ii. p. 361, pi. 13, f. 1. — Fi.em. 

 Brit. Anim. p. 466. — Brit. Marine Conch, p. 33, f. 72. — 

 Brown, 111. Conch. G. B. p. 114, pi. 23, f. 15, 16.— 

 Sowerby, Genera Shells, Galeomma, f. 1,2, 3.— Sow. 

 Conch. Manual, f. 58, 59. — Lam. Anim. s. Vert. (ed. 

 Desh.) vol. vi. p. 180. — Desh. Elem. Conch, pi. 11, f. 13 

 to 17. — Reeve, Conch. Sj-stem. vol. i. pi. 54, f. 1. 2, 3. — 

 Phil. Moll. Sicil. vol. ii. p. 18, pi. 14, f. 4. — Hanl. 

 Recent Shells, p. 59, suppl. pi. 9, f. 42. — Desh. Exp. 

 Scient. Algeria Moll. pi. 82 (anatomy), and pi. 81, f. II 

 to 15. — MiTTRE, Ann. Sc. Nat. 3rd series, vol. vii. p. 169, 

 pi. 5, f. 1-8. 



Hiatella Polii, Costa, Ann. Sc. Nat. 1st series, vol. xv. p. 100. 



PaHhenope formosa, Scacchi, Oss. Zool. p. 8, pi. 19 (ac. to Phillippi). 



For the discovery and publication of this most interest- 

 ing shell, the student of nature is indebted to Dr. Turton, 

 who, however he may have erred in his system of arrange- 

 ment and in unnecessary subdivision of species, did as- 

 suredly introduce to our notice some most important 

 generic and specific forms of the testaceous Mollusca. 

 This delicate shell, which was named by Mr. Sowerby in 

 his honour, is of a most fragile texture, and of a pure 

 semi-transparent white. Its shape is a produced oval, and 

 its valves at the umbonal region are decidedly convex, but 

 elsewhere a little compressed ; at the most it possesses a 

 slight pearly gloss, but, excepting in fine condition, is 

 destitute of any lustre. Its surface is traversed from the 

 beaks to the margins with most crowded irregular-looking 

 elevated lines, which are extremely fine, and are continu- 

 ally bifurcating ; those on the central area radiate down- 

 wards, but those upon the somewhat compressed lateral 

 areas diverge upwards. Most exquisitely minute and 



VOL. II, p 



