Mr. R. Etheridge on Carboniferous Lamellibranchiata. 427 
48. Natica janthostoma, Deshayes, Mag. de Zool. 1841, pl. 45 ; 
Conch. Icon. ix. f. 79a, b. 
Hab. Nemero, East Yesso. 
Three young specimens are rather differently coloured from 
the typical form. The chief colour of the body-whorl is a 
pale yellow, which is interrupted by two broad brown spiral 
bands. 
49. Natica Collie’, Récluz; Reeve, Conch. Icon. ix. f. 1124¢, b. 
Natica concinna, Dunker, Malak. Bl. 1860, p. 282; Moll. Japonica, p. 14, 
pl. i. f. 21. 
Hab, Matoza Harbour, 6 fathoms, sand. 
N. concinna, Dunker, is undoubtedly the same as N. Colliet, 
Récluz, his description agreeing in every particular with the 
latter species. 
The operculum is calcareous, and externally deeply and spi- 
rally suleated, as in N. mellepunctata, Lamk. 
50. Obeliscus pulcheltus, A. Ad. Thes. Conch. 11. p. 808, 
ple Li ENt..20. 
Hab. Goza Harbour, 6 fathoms, sandy mud. 
51. Syrnola cinctella, A. Ad. Ann. & Mag. Nat. Hist. 
1860, vi. p. 333. 
Hab, Matoza Harbour, 6 fathoms, sand. 
52. Solidula strigosa, Gould, Otia Conchol. p. 114, as 
Buccinulus. 
Hab. Gozo Harbour, 6 fathoms, sandy mud. 
[To be continued. | 
LIII.—Notes on Carboniferous Lamellibranchiata. 
By R. ETHERIDGE, jun., F.G.S. 
[Plate XX.] 
Genus Myauina, De Koninck, 
Descr. Animaux Foss. Terr. Carb. Belgique, p. 125. 
(Redefined by M‘Coy, Brit. Pal. Foss. p. 491.) 
Myalina crassa, Fleming. 
Modiolus, sp., Fleming, Edinb, Phil. Journ. 1825, xii. p. 246 (without 
description). 
Mytilus crassus, Fleming, British Animals, 1828, p. 412. 
30" 
