


142 
FIG PAGE 
115 12. Helix pura sc0.-0cteceee 53 
13, 14. Helix obvoluta ......... 53 
15, 16. Testacella Haliotoidea. 54 
17. i7.* Limax maximus ...... 55 
18, 18.* Limax flavus ......... 55 
19, 19.* Limax carinatus . 55 
20. Limax agrestis ....... 56 
21. Limaxarboreus .... 151 
22, 23. Helix aculeata 47 
24, 25. Clausilia bidens ......... 37 
26, 27. Clausilia bidens, var. 
nigricans ......... 38 
(27 exhibits the agaiearen of 
the aperture of the Clausiliz. 
Internal view of the aperture 
of Clausilia bidens, to expose 
the hinge bone; the mouth 
lies towards the left; the neck 
is broken off at a; the upper 
fold b; the lower fold c; the 
intermediate fold d; a thin 
fold runs down from the colu- 
mella, as in many of the 
Clausiliz, but not quite pro- 
truding beyond it e; a fold at 
the roof, which answers the 
purpose of the aperture of the 
hinge bone, which interiorly 
runs parallel, quite to the top 
of the roof parallel with the 
suture exteriorly, becomes 
visible like a white thread- 
like line; the lowest rounded 
off leaf-like part of the hinge 
bone which closes up the 
aperture of the Clausium.) 
28. Acme fusca ........... 34 
29, Operculum of Cydoslonia 
GlEBANS <ccveccecceocescereeviene 34 
30, 31. Lymnza minuta, var. 
Rossmiaseler’: 2iressss-2s-cc8 628 
32, 33. Lymnza ovata, var. 
vulgaris, Drapernaud ...... 29 
34, 35. Lymnza ovata, Draper- 
mes Siete. 04) 
36, 3 ie ovata, var. 
peregra, Drapernaud ...... 29 
38, 58.* Pupa muscorum ...... 89 
39, 39.* Pupa umbilicata ...... 40 
40, 40.* Pupa unidentata ...... 39 
Plate XIX. 
1, 2. Utriculus plicatus ...... 58 
3, 4. Utriculus discors......... 58 
5, 6. Utriculus obtusus......... 58 
7, 8. Utriculus minutus ...... 58 
9. Volvaria umbilicata......... 3 
10, 11. Utriculus pellucidus ... 59 
12. Volvaria retusa...........0++ 4 
13, 14. Utriculus candidus...... 59 
15, 16. Bulla producta ......... 57 
17, 18. Volvaria truncata ...... 4 
19, 20. Volvaria subcylindrica. 3 
21, 22. Bulla emarginata ...... 4 
23, 24. Bulla lignaria............ 56 
25, 26. Bulla denticulata ...... 57 
27, 28. Galericulum ovatum... 23 
29, 30. Bulla Hydatis............ 57 




DESCRIPTION OF THE PLATES. 










FIG. PAGE | FIG. PAGE 
31, 32. Akera flexilis .. 59|20. Crenatula Travisii ......... 75 
33, 34. Bulla catina.. 57 
35, 38. Galericulum tipeipatad 23 Plate XXIV. 
36, 37. Volvaria cylindrica ... 3] 1, 2. Pecten opercularis ...... 71 
39, 40. Utriculus Lima ... 58 (2, var. lineatus.) 
41, 42. Bulla striata ............. 57] 8. Pecten Islandicus............ 72 
43, 44. Volvaria alba............ 3] 4. Pecten varius 72 
45, 46. Volvaria pellucida...... 4| 5. Pecten Jacobeus .. 71 
47. Bullaialba ficces-sesserseeee ee 56| 6. Pecten obsoletus .. 72 
7. Pecten levis ........ 72 
Plate XX. 8. Pecten spinosus 73 
1, 4, 6. Lottia virginea ...... 63 
2) 35 7, 8, 1ae Patella os Plate XXV. 
Cida, 2 64| 1. Pecten maximus L¥..a. 71 
(2, 3, 7, eae oon 2. Pecten sinuosus tX.=..4.. 73 
5, 12, 14, 15, 17. Patella vul- 3, 4. Pecten glaber 1X¥..9:.2 73 
pater ees 63| 5, 6. Pecten similis JX..JH. 73 
(17, var. 1, vulpes 15, var. ss 7. Pecten Jamesoni ............ 73 
communis; 12 and 14, var. 3, 8. Pecten Landsburgi .......... 73 
albumena; 5, var. 4, conica.) 
9, 10. Lottia testudinalis...... 64 Plate XXVI. 
13. Patella cerulea.............. 64 1+ Pinna ingens.............. 75 
16, 18. Calyptrea sinense ...... 60| 2+ Pinna elegans ............... 76 
19, 20. Pileopsis ungarica ...... 60| 3- Pinna fragilis 75 
21, 22. Orbicula Norvegica ... 69 
Plate XX VII. 
Plate XXI. 1,2,3,4,5,6. Modiola papuana 77 
1, 16. Chiton levigatus ...... 67 | (2,5, and 6, young shells; 3 and 
2. Chiton albus............ 4, var. umbilicata.) Wil 6 
3. Chiton marginatus ... 7. Modiola Gibbsii V.U.7.%.. 78 
4, 12, 18, 15. Chiton ath 8. Modiola discrepans V.1l.=.12, 78 
nee a 65| 9- Modiola Prideauxiana V.N.Jb 78 
5, 8. Chiton bie EK 65 | 10. Modiola marmorata .Nil..J4 78 
6, 9. Chiton ruber ...... 66 | 11, 12, 13, 14,15. Mytilusedulis 76 
7. Chiton crinitus.... 66 | (11, var. 1, edulis; 14 and 15, 
10, 11. Chiton levis . 65| var. 2, elegans; 13, var. 3, 
14, 19. Chiton Asellus . 66 | pellucidus; 12, var. 5, incur- 
17. Chiton fuscatus 66| vatus.) VIT- 
18. Chiton cinereus 66 
20. Chiton discrepans... 65 Plate XXVIII. 
21. Chiton Aselloides...... 66| 1, 2, 5,4. Anodon Cygneus... 79 
22. Chiton quinquevalvis ...... 67| 1,8, and 4, var. 1, Cygneus... 7 
2, var. 4, stagnalis 79 
Plate XXII. 
1, 4. Anomia Ephippium...... 69 Plate XXVIIL* 
2,3. Anomia undulata.. 69| 1, 2, 3, 4, 5, 6, 7, 8, 9. Ano- 
5. Anomia squamula.... 69 don Cygneus.............02... 79 
6. Anomia aculeata ...... 69| 1; var. 2, cellensis............... 79 
7, 8. Anomia cylindrica 70| 2, young.. seater. O79) 
9. Orbicula Norvegica ...... 69| 6 and 7, var. 6, complanata. 80 
10,11,12. Terebratula cranium 68] 3, 4, and 5, var. 10, piscinalis 80 
13, 14, 15. Terebratula aurita. 68| 8 and 9, var. 11, rostrata...... 80 
16, 17. Pecten nebulosus ...... 72 
Plate XXIX. 
Plate XXIII. 1, 2, 3. Anodon Cygneus...... 79 
1, 2. Mytilus crenatus ... 77| 1, var. 8, anatina ......... 0... 79 
8. Avicula Anglica .... 74| 2, var. 7, Avonensis............ 80 
4, 5. Lima sulcata 74| 38, var. 8, ponderosa ............ 80 
6, 7, 7.* Lima fragilis . 74| 4. Dreissena polymorpha...... 76 
8, 9. Lima tenera.. 74 
HO} WO He DT sien ican 74 Plate XXX 
12, 13, 14. Crenella elliptica... 75] 1, 2, 3, 4, 5, 6, 7, 8. Anodon 
15, 16. Galeomma Turtoni ... 114 Cygneus ......+.. we 79 
17, 18. Binghami paradoxus... —J| 5 and 6, var. 5, eee 79 
(A remarkable bivalve, dredged 1 and 2, var. 8, ponderosa ... 80 
in Leith roads by the late 3 and 4, var. 9, subrhombea... 80 
General Richard Bingham. ) 7 and 8, var. 12, contorta 81 
19. Ostrea edulis on a1 | 89: Isocardiai Gor Ue-c..scee-- +e 86 

FIG. 
Plate XXX.* 
2, 3, 4. Alasmodon marga- 
ritiferus........ 
var. 2, Roissyi 
2, var. 3, minor..... 
3, var. 4, arcuata . 
1, var. 5, olivacea. 
a 
6 

. Isocardia Cor <......:. 
» 7. Ostrea ‘ilulins var. 
Plate XXXI. 
1,2. Alasmodon margaritiferus 
(2, hinge.) 
3, 4, 5, 6. Unio Batavus...... 
(4, internal view of the teeth ; 
5, external view of the teeth.) 
7, 8, 9, 10, 11. Unio pictorum 
(7 and 10, var. 1, ordinary form; 
8, var. 2; 9, var. 3; 11, ex- 
ternal view of the hinge.) 
12, 13, 14. Unio ovalis 
(14, external view of the teeth. 
Plate XXXII. 
1, 2, 3, 4. Unio Deshaysii ... 
(8, internal view of the teeth; 4, 
external view of the teeth.) 
5, 6, 7, 8. Unio tumidus...... 
(7, internal view of the teeth; 8, 
external view of the teeth.) 
9, 10, 11, 12. Unio rostrata... 
(11, internal view of the teeth; 
12, external view of the teeth. ) 
13, 14, 15. Alasmodon Roissyi 
(15, external view of the teeth. ) 
Plate XX XIII. 
15 2586 Aron Nowet.cscck.c osceec 
A; ib. Areaitnsea wtectrccatcsoee 
6. Arca lactea Persocea 
7 Axca barbatas..jeeversieetes 
8, 9. Pectunculus Glycimeris. 
10, 11. Pectunculus pilosus ... 
- Nucula margaritacea ...... 
Nucula tennisi;..--cs-secees 
15. Nucula argentea 
. Nucula rostrata 
17. Nucula oblonga 
18. Nucula minuta ............... 
19. 
20, 2 
Plate XXXIV. 
, 2, 8, 4, 5, 7. Cardium acu- 
leatum ......... 
(8, 4, 5, and 7 ae 
, 8. Cardium echinatum 
Cardium tuberculatum 
_ 
oD 
Plate XX XV. 
2, 3, 4, 5, 6, 7. Cardium 
CGI -cdreqessespcancranee foaees 
8. Cardium zonatum 
11. Cardium fasciatum 
. Cardium exiguum 
, 18, 14, 15. Cardium levi- 
gatum sees 
17. Cardium prledeeal 50 
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82 
81 
82 
82 
82 
