WOOD ENGRAVINGS. FIG. PAGE 1. Nymphon Abyssorum, NORMAN 81 2. Caprella spinosissima, NORMAN 83 3. Pentacrinus asteria, LINNÆUS 85 COLOURED PLATES. PLATE 1. 1. FLUSTRA LINEATA; (_a_) enlarged with polypes 73 protruding. 2. FLUSTRA FOLIACEA. 3. VALKERIA CUSCUTA; (_a_) natural size; (_b_) two tentacles; (_c_) tentacles bent inwards; (_d_) enlarged, showing the gradual eversion of the animal. 4. CRISIA DENTICULATA; (_a_) natural size. 5. GEMELLARIA LORIOATA; (_a_) natural size. 6. SERTULARIA ROSEA; (_a_) natural size. 7. CELLULARIA CILIATA; (_a_) natural size; (_b_) one of the bird’s heads; (_c_) cell and bird’s head, much enlarged. 8. CAMPANULARIA SYRINGA; (_a_) natural size. 9. CAMPANULARIA VOLUBILIS, enlarged. 10. SERIALARIA LENDIGERA. 11. NOTAMIA BURSARIA; (_a_) natural size; (_b_) two pairs of polype cells with the tobacco pipe appendages 2. 1. CARDIUM RUSTICUM, (TUBERCULATUM). 2. PAGURUS 65 BERNHARDI, in a Periwinkle Shell 3. 1. NEMERTIES BORLASII. 2. SABELLA? 3. 136 Sand-tube of TEREBELLA CONCHILEGA (_See Plate_ 8) 4. 1. SYNAPTA DIGITATA; (_a_) Ditto separating and 109 throwing out capsuliferous threads. 2. THALASSIMA NEPTUNI 5. 1. BALANOPHYLLEA REGIA, expanded; (_a_) Ditto, 117 contracted; (_b_) Ditto coral; (_c_) Ditto, tentacle enlarged; 2. CARYOPHYLLEA SMITHII partly expanded; (_a_) Ditto, section of bony plates; (_b_) Ditto, tentacle. 3. SAGARTIA ANGUICOMA closed; (_a_) Ditto, basal disc showing radiating septa. 4. SYNAPTA DIGITATA (_See Plate_ 4); (_a_, _b_) Ditto, fingered tentacles enlarged; (_c_) Ditto, Spiculæ; (_d_) Ditto, anchor lying on its transparent anchor-plate. 5. S. VITTATA? perforated anchor-plate; (_a_) Spicula 6. 1. ACTINIA MESEMBRYANTHEMUM, partially expanded; 135 (_a_) Ditto, closed. 2. BUNODES CRASSICORNIS. 3. CARYOPHYLLEA SMITHII _Front_ 7. 1. ECHINUS MILIARIS, creeping over Modiola 168 barbata. 2. Ditto, creeping up the glass. 3. Hiding under stones 8. 1. LITTORINA LITTOREA (_See Plate_ 9); (_a_) 201 operculum; (_b_) pallet; (_c_) part of pallet, magnified. 2. NASSA RETICULATA (_See Plate_ 11); (_a_) egg capsules; (_b_, _c_) fry; (_d_) shell of fry; (_e_) pallet, magnified. 3.