FIG. 
Plate XXXVI. 
, 5, 19, 20. Artemis exoleta. 
, 4. Artemis lincta 
5, 7, 8. Pullastra aurea 
6. Pullastra virginea............ 
9. Pullastra Irus 
10. Venus fasciata 
11. Venus Gallina 
12. Venus suleata 
13. Venus costata .......ssesee0e 
14. Venus rugosa 
15, 16. Myrtea spinifera 
15.* Venus Casina ........0-c.006 
16.* Venus verrucosa 
17, 18. Laseea rubra 
n= 
Plate XX XVII. 
1. Cyprina vulgaris 
2. Cytherea Chione ............ 
3. Cytherea minima............ 
4. Cytherea minuta ............ 
5, 6. Pullastra decussata 
7. Pullastra vulgaris............ 
8, 9. Pullastra virginea 
10. Pullastra perforans ......... 
11. Venus ovata .......0sseseeeee 
12, 13. Venus reflexa............ 
14, 15. Venus laminosa 
Plate XXXVIII. 
1. Crassina Danmoniensis 
2. Crassina depressa............ 
3. Crassina elliptica ............ 
4, 5, Crassina compressa ...... 
6, 7, 8. Crassina striata 
9. Crassina Scotica .........0 
10. Crassina sulcata .......... 
11. Cyprina vulgaris ............ 
12, 18. Crassina ovata 
Plate XX XIX. 
1, 2. Lucina undata............ 
3. Lucina lactea 
4,5,5,*6,7. Cryptodon eats 
(5,* hinge; 6 and 7, var.) 
8, 9. Lucina radula ............ 
10. Capsa complanata 
11. Donax trunculus .... 
12. Capsa castanea.... 
13. Donax ruber..... 
14, 15. Myrtea spinifera ...... 
16, 17, 18. Cyclas rivicola 
17.* Modiola rhombea 
19. 
20. 
21. 
22. 

Cyclas cornea ............+6 
Cyclas lacustris : 
Cyelas calyculata............ 
Pisidium obliquum ......... 
Pisidium fontinale 
Pisidium obtusale............ 
. Pisidium appendiculata 
Pisidium nitidum 
. Pisidium pusillum 
. Pisidium cinereum . 
29. Lucina leucoma B 
30, 31. Psammobia tellinella... 
32. Psammobia Laskeyii 
53. Psammobia polygona 
34. Psammobia costulata 
PAGE 
92 
92 
69 
89 
89 
91 
89 
90 
90 
90 
98 
90 
90 
93 
102 
103 


DESCRIPTION OF THE PLATES. 
FIG. 
5. Thracia declivis ............ 
6. Thracia pubescens 
7. Thracia distorta 
8, 9. Tellimya bidentata...... 
11, 12, 13, 14. Thracia brevi- 
TOSUYA...cecccnsccenscecesceesces 110 
Plate XLV. 
1, Mya arenaria 111 
2. Mya truncata 111 
8. Sphenia decussata ......... 104 
4, 5, 6, 7. Mytilus edulis...... 77 
(var. 4, subsaxatilis. ) 
Plate XLVI. 
1. Panopwa Glycimeris......... 112 

FIG. PAGE 
35. Tellina similis ............... 101 
Plate XL. 
1, 2. Psammobia Ferroensis... 101 
3. Psammobia vespertina ...... 101 
4, 5, 6. Psammobia jugosa ... 101 
7. Lepton squamosum ......... 111 
8. Arcopagia crassa ............ 99 
9, 10. Arcopagia ovata ...... 99 
11. Lucina rotundata............ 98 
12. Tellina depressa ............ 100 
13. Tellina punicea ............ 100 
14. Tellina solidula............... 101 
15. Tellina striata .........2..+. 100 
16. Tellina Donacina............ 101 
17. Tellina lineata ............-.. 100 
18. Tellina Fabula ...........++ = TOL 
19. Tellina tenuis ............... 100 
20, 21. Tellina elliptica......... 101 
22. Tellina pellucida ............ 10] 
23. Tellimya substriata ......... 107 
24. Crassina corrugata ......... 96 
25. Mactrina triangularis ...... 108 
26, 27. Myatella Montagui 111 
Plate XLI. 
1. Mactra glauca ............+.. 
2. Mactra stultorum 
8, 4. Mactra solida ............ 
5. Mactra truncata ............ 
6. Mactra elliptica 
s a subtruncata .. 
. Mactra dealbeta .. 
= aes striata: -.secs- 



11, 12. Mactratringults, Fut 
TOIG Deen ceoeedeeceesteassaonea 
Plate XLII. 
1, Ligula pretenuis ............ 106 
2. Amphidesma tenue .. 105 
3. Amphidesma Boysii.. 105 
4, Amphidesma truncata ...... 106 
5. Amphidesma aye se LOS 
6. Corbula rosea ............... 105 
7, 8, 9. Corbula nucleus ...... 105 
10, 11. Tellimya lactea.. 
12, 13. Tellimya tenuis.. 
14, 15. Tellimya aes 
16, 23, 24, Sphenia Swainsoni 
17, 18, 22. Sphenia Binghami. 
19. Tellimya elliptica 


20, 21. Tellimya glabra 
25, 26, 26.* Mactrina minutis- 
MUDD eeradccexvacyesseUserceeve LOS 
27. Anatina aration. — 
28. Thracia truneat SiS occcaniees) ILO 
29, 30, 31. Saxicava purpurea. 103 
32, 33. Corbula ovata 105 
34, 35. Modiola Ballii 132 

Plate XLIITI. 
1. Lutraria Solenoidea 
2, 3. Lutraria elliptica.. 
4, Lutraria compressa 

Plate XLIV. 
1, 2, 10. Magdala striata...... 111 
8. Thracia convexa .......... 110 
4. Thracia ovata ............... 110 

2,3, 4. Terebratula psittacea 68 




143 
FIG. PAGE 
3. Pentelasmis radula ......... 120 
4, 5, 6. Pentelasmis sulcatus. 119 
(5 and 6, var. 5.) 
7, 9, 10. Scalpellum vulgare . 
(7, var. a; 9, var. b; 10, var. c.) 
8. Scalpellum similium......... 
11, 12. Pollicipes cornucopia... 
(11, var. a; 12, var. 6.) 
13, 14, 15. Otion Blainvillii ... 
(18, var. 1; 14 and 15, var. 2.) 
16, 17, 18. Cineras vittatus ... 
(16 and 18, var. a; 17, var. b.) 
119 
119 
118 
118 
118 
Plate LII. 
1, 2, 3, 4. Pentelasmis anati- 
POs. 22. ARO Ses see 
5. Pentelasmis Batts 




5. Anomia electrica ............. 70 
6. Avicula Atlantica............ 74 Plate LIII. 
1, 2, 3, 22. Balanus Scoticus. 121 
Plate XLVII. (2 and 3, the operculum.) 
1, Hiatella minuta 103] 4, 7, 8, 21. Balanus rugosus . 120 
2,2. Solen vagina ............ 112| (7 and 8, the operculum; 21, an 
2.* Solen Ligula .............0. 112] elongated variety.) 
3, 3.* Solen siliqua .,.......... 112] 5,6, 13,20. Balanus punctatus 121 
4. Solen pellucidus ............ 113 | (5 and 6, the operculum; 20, an 
5, 12, 13. Pandora rostrata... 104| elongated variety.) 
6, 7. Azor antiquatus ......... 113| 8,*9,* 17. Balanus balanoides 120 
8, 9, 9.* Solenocurtus Legu- (8* and 9,* the operculum.) 
THOM sestte seed ads ok 113} 9, 10,11, 12. Balanus Cranchii 121 
10, 10.* Solen Ensis .. 113 (11 and 12, the operculum.) 
14, 16. Saxicava rugosa. 103 | 14, 15, 16. Balanus spongicola. 121 
15. Hiatella oblonga .... 103 (14 and 15, the operculum.) 
23. Balanus communis ......... 120 
Plate XLVIII. 24, 25, 26. Balanus Montagui. 121 
1, 2, 3, 4, 5. Pholas crispata. 114 (26, the operculum.) 
6, 7, 8, 9, 10. Pholas candida 115 | 27, 28, 29. Pyrgoma Anglica... 120 
1], 12. Pholas parva :..+........ 115 (28, the operculum.) 
13, 14. Gastrochena Pholadia. 116 | 30. Clitia verruca ..........:.... 122 
15, 16. Saxicava rugosa, var. . 103 
17, 18. Pholas sulcata ......... 115 Plate LIV. 
1. Balanus communis ......... 
Plate XLIX. 2, 3. Balanus costatus ... 
1, 2, 3. Pholas dactylus ...... 115| 4, 5. Balanus balanoides 
4, 6, 7, 9. Pholas papyracea. 114] 6, 13, 14. Balanus rugosus ... 120 
5, 8. Pholas striata ............ 115 (13 and 14, the operculum.) 
10, 11. Pholas lamellata ...... 114] 7. Balanus conoides ............ 121 
12, 13. Pholas tuberculata...... 115] 8, 9, 10, 11, 12. Balanus can- 
didus 121 
Plate L. (8, an elongated ee, ll ont 
1, 2, 3, 4, 5, 6, 7. Teredo 12, the operculum.) 
DAVALIS# ces staccee cote ces ccees 116 
(1 4, section of the lower end of Plate LV. 
the tube; 2, an entire tube, 1, 5. Serpula triquetra......... 123 
with the bivalve seated on its 2, 3. Serpula vermicularis ... 123 
wider extremity; 3, 4, and 5, 4. Serpula contorta ............ 122 
different views of the bivalve; 6. Serpula spiralis... s 122 
6 and 7, different views of the 7. Serpula perversa . . 122 
spoon-shaped appendage. ) 8. Serpula serrulata ..... = 23 
8; 9 10,11, 125 15: see 9, 10. Serpula tubularia ...... 122 
ga dorsalis 117 
(11, 12, and 13, diferent views Plate LVI. 
of the bivalve.) 1. Dentalium Gadus............ 117 
14, 15. Teredo nana ............ 116] 2. Dentalium octangulatum... 117 
16. Teredo maleolus ............ 116] 3. Brochus glabrus ............ 125 
4, 5. Dentalium labiatum ... 117 
Plate LI. 6. Brochus levis A htel= 
1. Pentelasmis anseriferus ... 119| 7. Dentalium entalis... tly, 
2. Pentelasmis fascicularis ... 120} 8. Dentalium dentalis ......... 117 

