14 
INDEX TO THE HISTORIA CONCHYLIORUM. 
MARINE BIVALVES. 
Tab. Fig. 
163 1. Ostrea maxima, lower valve; and it is copied from the Historia Animalium Angliae, 
t. 5. f. 29. 
165. 2. | Ostrea Jacobcea. 
166. 3. j 
l6‘7- 4. Quoted by Gmelin, and most other authors, for Ostrea maxima, but appears to me 
to be a variety of Ostrea nodosa. 
168. 5. Ostrea ziczac. 
168. a.— Ostrea maxima, upper valve: and this piate ought obviously to have been num- 
bered l6'4. and to have followed the other valve of Ostrea maxima. 
169. 6. Ostrea turgida, with the longer ear imperfect. 
170. 7. Gmelin has described this figure separately, with the name of Ostrea crenata; and 
it appears to me to be Ostrea lineata. 
171. 8. Ostrea Pes Lutra. 
172. 9. Ostrea sinuosa; and Gmelin, who first gave this name to the species, has obviously 
taken his description entirely from Lister’s: the figure has been copied from the 
Historia Animalium Angliae, t. 5. f. 31. where both the valves are given. 
173. 10. Quoted by Chemnitz, Gmelin, Lamarck, and other authors, for Ostrea hybrida, but 
it appears to me to be Ostrea obliterata. 
174. 11. Erroneously quoted in the Descriptive Catalogue for Ostrea nodosa, and by a note 
of Listers appears to have been intended for the opposite valve of fig. 12. 
175. upper fig. 12. Ostrea Radula; and fig. 11. is the other valve. 
175. two lower figures. The Ostrea crenulata and the Ostrea innominata of Gmelin have 
been constituted from these two figures, and they are both varieties of Ostrea 
pellucens. 
176. 13. Ostrea scabra; and Klein’s t. 9. f. 32. and 33. are copies. 
177. 14. Ostrea fasciata. 
178. 15. Has been quoted generally for Ostrea varia, but appears to me to be a white va¬ 
riety of Ostrea sanguinea. 
179. 16. Ostrea Nucleus. 
180. 17. From this figure Schroeter has constituted the Ostrea No. 32. of his Einleitung, 
which is the Ostrea subrufa of Gmelin ; and Dr. Turton, in his edition of the 
Systema, has changed the name to Ostrea rufescens: ii is however obviously 
nothing more than Ostrea varia, in one of its most common appearances. 
181. 18. Has been quoted by several authors for Ostrea Pusio, but is certainly one of the 
almost endless varieties of Ostrea varia. 
182. 19. In a note of Listers, this figure and t. 192. f. 29. are said to be the two valves of the 
same shell; and Gmelin has notvvithstanding followed Schroeter in quoting the 
former as a variety of Ostrea gibba, and in constituting a separate species from 
the latter, with the name of Ostrea dubia, aithough they obviously belong to 
Ostrea opercularis. 
183. 20. The Ostrea No. 34. of Schroeters Einleitung, which is the Ostrea squamata of 
Gmelin, has been described entirely from this figure, and it is probably a variety 
of Ostrea imbricata. 
184. 21. The Ostrea No. 35. of Schroeter, and both the Ostrea squamosa and the Ostrea 
anonyma of Gmelin have been derived from this figure, which is considered by 
Lamarck to be a variety of Ostrea hybrida: these two of Gmelin’s species, and 
this figure, have been erroneously quoted in the Descriptive Catalogue for Ostrea 
pellucens. 
185. 22. Ostrea sanguinea. 
186. 24. Ostrea nodosa. 
187- 25. Ostrea Pallium. 
188. 26. Schroeter from this figure has constituted his Ostrea No. 36. which is the Ostrea 
decemradiata of Gmelin: but Lister in a note says, that it is the opposite valve 
of figure 24 ; and it has the appearance of a young shell of Ostrea nodosa. 
189. 23. Quoted by Gmelin for Ostrea Pusio, but is certainly a variety of Ostrea varia. 
190- 2 7- I O s f r ea opercularis. 
191. 28. ) 
