Mr. R. Etlieridgc on Carboniferous LamelUhranchiata. 427 



48. Natica Janikostonm, Deshayes, Mag. de Zool. 1841, pi. 4o ; 



Conch. Icon. ix. f. 79a, b. 



Ilab. Nemero, East Yesso. 



Three young specimens are rather differently coloured fi"om 

 the typical form. The chief colour of tlie body-whorl is a 

 pale yellow, which is interrupted by two broad brown spiral 

 bands. 



49. Natica Colliei^ Recluz ; Reeve, Conch. Icon. ix. f. 112o, b. 



Natica concinnn, Dunker, Malak. Bl. 18G0, p. 232 ; Moll. Japonica, p. 14, 

 pi. ii. f. 1^1. 



Hob. Matoza Harbour, 6 fathoms, sand. 



N. coHcinnay Dunker, is undoubtedly the same as N. Colliei, 

 Recluz, his de.-5cription agreeing in every particular with the 

 latter species. 



The operculum is calcareous, and externally deeply and spi- 

 rally sulcated, as in N. millepunctatay Lanik. 



50. Obdiscus puhheUus^ A. Ad. Thes. Conch, ii. p. 808, 

 pi. 171. f. 20. 



Ilab. Goza Harbour, 6 fathoms, sandy mud. 



51. Syrnola cinctella, A. Ad. Ann. & Mag. Nat. Hist. 



1860, vi. p. 333. 



Hob. Matoza Harbour, 6 fathoms, sand. 



52. Solidula stri(josa, Gould, Otia Conchol. p. 114, as 



Buccinulus. 



Ilab. Gozo Harbour, 6 fathoms, sandy mud. 



[To be continued.] 



LIII. — Notes on Carboniferous LamellibrancJiiata. 

 By R. Etheridge, jun., F.G.S. 



[Plate XX.] 



Genus Myalina, De Koninck, 



Descr. Animaux Foss. Terr. Carb. Belgique, p. 125. 

 (Redefined by M'Coy, Brit. Pal. Foss. p. 491.) 



Myalina crassa, Fleming. 



Modiohis, sp., Fleming, Edinb. Pliil. Joum. 182o, xii. p. 24G (without 



description). 

 Mytilus crassun, Fleming, British Animals, 1828, p. 412. 



30* 



