TABLE OF CONTENTS. 



No. 

 27 

 ' 28 

 29 

 30 

 31 

 32 

 33 

 34 

 35 

 36 

 37 

 38 

 39 

 40 

 41 

 42 

 43 



No. 

 1 



2 

 3 

 4 

 5 

 6' 



9 

 10 

 11 



12 



No. 



1 



2 



3 



4 



5 



6 



7 



8 



9 

 10 

 11 

 12 



Page 



Purple-Tipped Acorn 55 



Porons Acorn 56 



Wart-Shaped Acorn 57 



Norwegian Acorn 58 



Carious Acorn 



Mitre Barnacle 59 



Cornucopia Banacle 60 



Pen-Knife Barnacle 61 



Bladder Barnacle 62 



Striated Barnacle 64 



Duck Barnacle 65 



Downy Barnacle 67 



Toothed Barnacle 



Furrowed Barnacle 68 



Ribbon Barnacle 69 



Membranous Barnacle 70 



Eared Barnacle 



PHOLAS. Page 73 



Prickly Piercer 77 



Indian Piercer 78 



White Piercer 79 



Ribbed Piercer 80 



Curled Piercer 81 



Small Pierce-Stone 82 



Striated Piercer 83 



Hooked Piercer 84 



Hart-Shaped Piercer ...... 85 



Chili Piercer 



Gaping Piercer 



Teredo Piercer 86 



MYA. Page 87 



Abrupt Gaper 90 



Sand Gaper 91 



Convex Gaper 92 



Sloping Gaper 93 



Spoon-Hinge Gaper 94 



Duck Gaper 



Globular Gaper 95 



Arctic Gaper 



Toothless Gaper 96 



Pitchy Gaper 



Nicobar Gaper 97 



Beaked Gaper 



No. Page 



13 Norway Gaper 98 



14 Membranous Gaper 



15 Deformed Gaper 



16 Double-Toothed Gaper 99 



17 Decussated Gaper 



13 Purple Gaper 100 



19 Rusty Gaper 



20 Glossy Gaper 101 



21 Prismatic Gaper 



22 Substriated Gaper 102 



23 Dubious Gaper 



24 White Norway Gaper 103 



25 Dutch Gaper - 



26 Painters Gaper 104 



27 Oval Gaper 105 



28 Thick Gaper 106 



29 Knotted Gaper 



SO Pearl Gaper 107 



31 Wrinkled Gaper 108 



32 Radiated Gaper 109 



33 Rough Gaper 



34 Knobbed Gaper 110 



35 Spurious Gaper 



36 Angular Gaper 



37 Roundish Gaper Ill 



38 Variable Gaper 



39 Lipped Gaper 112 



40 Unequal- Valved Gaper .... 113 



41 Great Gaper 114 



No. SOLEN. Page 115 



1 Pod Razor 118 



2 Carmarthenshire Razor .... 119 



3 Sheath Razor 



4 Truncated Solen 121 



5 Slender Razor 



6 Sword Razor 122 



7 Transparent Razor 123 



8 Peascod Razor 124 



9 Kidney Razor 125 



10 Antiquated Razor 



11 Brittle Razor 126 



1 2 Strigilated Razor 127 



13 Duck-Bill Razor 128 



i 1 Rayed Razor 



