DESCRIPTION OF COLOlJiiED PLATES. XIX 



ceUaria forcepiforma, from the same— 95. Cristatella mucedo, statoblast — 

 96. Cristatella mucedo, statoblast, edge-view— 97. Early stage of develop- 

 ment of same — 9S. Lophopua crystallinus— 99. Plumatella repena and ova, 

 on a piece of submerged stem — 100. Taenia echinococcus — 101. Hydatids in 

 human liver— 102. Bilharzia hrematobia— 103. Amphistoma conieum — 104. 

 Trichina spiralis .from Hambro' pork — 105. Trichina spiralis extracted — 

 106, 107. Fasciola gigantea, after Cobbold. 



PLATE V.— Page 538. 



MOLLUSCA. 



Fig. 10S. Velutina laevigata, portion of lingual membrane— 109. Velutina hevi- 

 gata, part of mandible — 110. Hybocystis blennius, portion of palate — 111. 

 Sepia officinalis, portion of palate— 112. Aplysia hybrida, part of man- 

 dible — 113. Loligo vulgaris, part of palate— 114. Haliotis tuberculatum, part 

 of palate— 115. Cistula catenata, part of palate— 116. Patella radiata, part 

 of palate— 117. Acmeoea virginea, part of palate— 118. Cymba olla, part ol 

 palate — 119. Scapander ligniarius- 120. Oncidoris bilamellata, part of 

 palate— 121. Testacella Maugei, part of palate— 122. Pleurobranchus plu- 

 mula, part of mandible— 123. Turbo mannoratus, part of palate. 



Figs. 108 to 123, Lingual membranes of Molluscs ; the drawings 

 made by Mrs. Maples from specimens in the late S. P. Wood- 

 ward's collection, now the property of F. E. Edwards, Esq. 



Chosen without any special order, and simply as showing good 

 examples of the wonderful forms met with iu the mouth-armature 

 of Gasteropod and Cephalopod Mollusca ; viewed by polarised light 

 and selenite stage. 



PLATE VI.— Page 576. 



1NSECTA. 



Fig. 124. Egg of Caradina Morpheus, Mottled Rustic Moth— 125. Egg of Tortoise- 

 shell Butterfly, Vanessa Urtica— 126. Egg of Common Footman, Lithosia 

 complanula — 127. Egg of Shark Moth, Cucullia Umbratica— 12S. Maple- 

 aphis— 129. Egg-shell of Acaru3, empty — 130. Egg of House-Fly — 131. 

 Mouth of Tsetse-Fly, Glossina morsitans — 132. Vapourer Moth, Orgyia 

 antiqua : antenna of male— 133. Vapourer Moth, antenna of female ; o. 

 branch more magnified to show rudimentary condition of the parts — 

 134. Tortoise-shell Butterfly; head in profile, showing large compound 

 eye, one of the palpi, and spiral tongue— 135. Tortoise-beetle, Cassida 

 viridis ; under surface of left fore-foot, to show the bifurcate tenent ap- 

 pendages, one of which is given at a. more magnified. This form of 

 appendage is characteristic of the family. See West on Feet of Insects, 

 Unn. Trans, vol. xxiii. tab. 43 — 136. Egg of Blue Argus Butterfly, 

 PolyotLmatus Argus — 137. Egg of Mottled Umber, Erannis Defolana— 

 138. Egg of Ennomos erosaria, Thorn-Moth— 139. Egg of Aspilates Gilvana, 

 Straw Belle — 140. Blow-fly, Musca Vomitoria; left fore-foot, under- 

 surface, to show tenent hairs; a b more magnified; a from below, 6 

 from the side— 141. House-fly larva— 142. Amara communis, left fore-foot, 

 under-surface, to show form of tenent appendages, of which one is given 

 more magnified at a. These, in the ground beetles, are met with only in 

 the males, and seem to be used for sexual purposes. The way in which 

 they are protected when not in use is shown by T. West— 143. Epnyara 

 riparia: left fore-foot, under-surface. This fly is met with sometimes in 

 immense numbers on the water in salt-marshes; it has DO power of climb- 

 ing on glass, which is explained by the structure of the tenent hairs; 

 the central tactile organ also is very peculiar, the whole acting as a float, 

 one to each foot, to enable the fly to rest on the surface of the water ; a. one 



