INDEX TO THE HISTORIA CONCIIYLIORUM. 
13 
Tab. Fig. 
136. 40. Helix Cornu Arietis. 
137 . 41. Helix cornea. 
138. 42. Helix complanata. 
— 43. Helix Vortex. 
139. 44 . Constitutes the Helix No. 269 . of Schroeter’s Einleitung; and, with this exception, 
appears to me to be an undescribed species. Petiver, in his Gazophylacium, t. 
106 . f. 19 . has copied this figure. 
— 45. Helix alba: and Petiver s t. lo6. f. 20 . is a copy. 
140. 46. Planorbis trivolvis of Say; and the Planorbis eburneus of Chemnitz, vol.ix. part 2 . 
p. 97 . t. 127 . f. 1123. if not the same, is nearly allied to this species. In the De¬ 
scriptive Catalogue I have erred, by following Muller and Gmelin in quoting 
Lister’s figure for Helix albella: and Petiver’s t. 106 . f. 17- is a copy. 
— 47 . Schroeter has arranged them separately; but some specimens in my cabinet leave 
me no doubt that it belongs to the same species as fig. 46. 
141. 38. Nerita Jluviatilis; and is taken from the Historia Animalium Anglise, t. 2 = f. 20 . 
— 39- Patella lacustris; and the figure is taken from the Historia Animalium Anglise, 
t. 2. f. 32. 
142. 3 6 . A young shell of Helix mammillaris. 
143. 37 . Nerita pulligera. 
FRESHWATER BIVALVES. 
146. 1. My a Batava. 
147 . 2. My a ovata: and both this and the following figure have been copied from the Ap¬ 
pendix to the Historia Animalium Anglise, t. 1. f. 4. and 6. 
— 3. Has been generally quoted for My a Pictorum; but Lamarck suspects that it be¬ 
longs to another species, which he has named Unio angusta. 
148. — A distorted shell of My a ovata. 
149 . 4. My a margaritifera: and it has been copied from the Appendix to the Historia 
Animalium Anglise, t. 1 . f. 1 . 
150. 5. Is My a complanata; and the Unio crassidens of Lamarck, and the Unio crassus of 
Say, may be added to the synonyms of this species. 
151. 6 . Is the Unio nasutus of Say: and Petiver, in the Gazophylacium, t. 105. f. 2 . has 
copied this figure. 
152. 7 . Mr. Say has quoted this figure for his Unio cariosus; but some American speci¬ 
mens in my cabinet tend to confirm Lamarck’s opinion, that it belongs to his 
Unio ochraceus, and that the latter is My a radiata. 
153. 8 . Mytilus anatinus; and it is an exact copy from the Appendix to the Historia Ani¬ 
malium Anglise, t. 1 . f. 2 . 
154. 9- Mytilusfucatus. 
155. 10 . Muller has quoted this figure for his Mytilus radiatus, which is probably only a 
variety of Mytilus Cygneus; and it has been quoted, with a mark of doubt, 
though with greater probability, by Lamarck, for his Unio purpurata: but as 
Lister has not either figured or described the inside, it is almost impossible, with 
any certainty, to ascertain the species. 
156. 11 . Mytilus Cygneus: and the figure is taken from the Appendix to the Historia Ani¬ 
malium Anglise, t. 1 . f. 3 . 
157 . 12. Mytilus Jluviatilis : and the name was first given by Gmelin to a description of 
this figure. 
158. 13. Venus paradoxa, with the epidermis. The Venus subviridis of Gmelin has been 
wholly constituted from this figure; and the Galathea radiata, of Lamarck, and 
the Donax variegata of Perry, may also be added to the synonyms of this scarce 
and beautiful species. 
159 . 14. Tellina cornea. 
— 15. Tellina pusilla. The Tellina Virginica of Gmelin has been constituted from this 
figure; and it has been copied by Petiver in his Gazophylacium, t. 104. f. 5 . 
160 . 16 . The Tellina alata of Gmelin has been constituted from this figure; and it is a va¬ 
riety of My a sermatophora, which is the Hyria avicularis of Lamarck. Klein’s 
t. 9 . f.36. is a copy. 
D 
