269 



Pagi. 



1 3. 1 4. MoUiola aspera 1 72 



15,16. subtruncata 173 



17. AlJami 172 



1 8. flexuosa 173 



19,20. curtata 173 



21,22. subcarinata 173 



23. revcrsa 173 



24,25. Robcrtsoni 173 



26. pulchra 1 74 



27. Moorii 173 



28. minima 173 



29. minuta 174 



30. 31. cunoata 174 



32, 33. rcniformis 173 



34. inclusii 174 



35. fequalis 1 73 



36. imbricata 1 72 



37. teris 172 



38L undulata 1 74 



39. squamifera 174 



40. pallida 172 



41. depressa 172 



42. lingualis 1 74 



43. clongata 1 74 



44. 45. Litbophagus aatiquus 257 



Plate LXXII.* 



1. Modiola plicata 1 72 



2. bipartita, var 173 



3. Triaxus latus 



4. 5. Chama squamosa 176 



6. Modiola scalprum 174 



7. rectus 174 



8. antiqua 1 72 



9. Trigonia pennata 1 82 



10, 1 1. Caprina Lonsdalli 176 



1 2. Trigonellitcs antiquatus 214 



13. Trigonia elongata 182 



14. duplicata 182 



15. striata 182 



16. Trigonellitcs politus 214 



1 7. Modiola scmisulcata 1 72 



18. Unio humatus 1 79 



1 9. Alasmodon vetustus 181 



Plate LXXIII. 



1. Unio Hcjii 178 



2. Blajdsii 178 



3. Dawsoni 177 



4. amygdala 177 



5. Rhindi 187 



6. Embletoni 1 78 



7. nanus 177 



8. nucleus 1 78 



9. similis 178 



10, 11. Smitbii 178 



1 2. subtriangularis 178 



13. dubius 177 



14.15. rugosus 177 



I'Ar.E. 



16, 17. Unio turgidus 178 



18. Aldnmi 179 



19. pyramidatus 179 



20. agrestis 1 78 



21. transversus 178 



22. subrotundus 177 



23,24. Gerardi 177 



25. cxoletus 177 



26. lateralis 177 



27. bipcniiis 177 



28,29. sulcatus 177 



30. Caldcnsis 179 



31. 8cne.x 178 



32. 33. Polmontensis 180 



Plate LXXIV. 



1 . Uuio aduncus 1 80 



2. 3. Gualteri 180 



4. Cardinia cuncinna 213 



5. Pullastra peregrina 203 



6. Unio subtruncatus 179 



7. Martini 179 



8. Cardinia crassissima 214 



9. abducta 214 



10. Unio Solandri 179 



1 1 . comprcssus 180 



12. antiquus 180 



\X acutus 180 



1 4. porrcctus 1 80 



15,17 subcoustrictus 181 



16. Mantclli 179 



18. Cardinia crassiuscula 214 



19. hybrida 314 



20. Listen 214 



21. Unio cordifonnis 179 



Plate LXXIV.* 



1, 2. Unio pictorum 180 



3. 4. ovalis 1 79 



5, 6. tinnidus 1 79 



7. Anodon Cygnea 176 



Plate LXXV. 



1 . Trigonia angulata 182 



2,3. imbricata 182 



4. costata 1 82 



5. quadrata 1 82 



6. Trigonellitcs latus 214 



7. Trigonia Aliformis 182 



8. spinosa 1 83 



9. spcctabilis 183 



1 0. nodosa 1 83 



11. clavcllata 183 



12. pustulata 183 



13. gibbosia 183 



14,15. cuspidata 183 



16,17. puUus 183 



Plate LXXVI. 



PaOI!, 



1 , 2. Nucula variabilis 185 



3, 4. antiquata IBS 



5. clongata 



6, 7. undulata 185 



8,9,10. lineata 186 



11,12. inflata 184 



13,14. apiculata 186 



15, 16. impressa 185 



17. ovata 186 



18,19. mucronata 185 



20. Iachr)-ma, variety 1 85 



21 . Trigonia daedalea 184 



22. Nucula tevls 184 



23,24,25. lachryma 185 



26. subrecurra 186 



27. complanata i 86 



28. 29. 48. similis 185 



30. dubia 186 



31,32. angulata 186 



33. ovalis 184 



34. axiuiformis 186 



35. 36. amygdaloidcs 1 85 



37. ovum 185 



38. claviformis 1 85 



39. palnue 185 



40. elliptica 186 



41. Trigonia affinis 183 



42. incurva 184 



43. Nucula trigona 185 



44. bivirgata 186 



45. Trigonia excentrica 1 83 



46. 47. Nucula pisum 186 



49. obtusa 186 



50. laevigata 185 



51. dcltoidea 134 



52. lanccolata 1 84 



53. minima 1 85 



54. pectinata 185 



55. Cobboldia) 184 



56,57. accipicns 187 



58. acuta 1 87 



59. sequalis 187 



60,61. striata 187 



62. plicata 188 



63, 64. oompressa 1 87 



65. radiata 188 



66,67. pygmiea 188 



68,69. longirostra 187 



70. attenuata 187 



71. lajvirostra 188 



72. cunrata 1 87 



73. latissima 188 



74. brcvirostra 1 87 



75. nuda 187 



76,77. Wcthercllii 187 



78, 79. gibbosa 187 



80, 3i. Lucinifonnis 187 



82, 83. Bowcrbaukii 187 



3 o 



