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1$9 
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eel 
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Valvata tricarinata . . 
Valvata bicarinata .... se 
Valyara siecle. ae e6 
Ampullaria depressa . . . 66 
Ampullaria miamiensis . . . Ge 
Somatogyrus altilus . . . . as 
Somatogyrus subglobosa . . . “e 
Ammnicola limosa. .... .« Ge 
Bichynia tentaculata . . . . ee 
Goniobasis virginita . . . . “ce 
Goniobasis multineata,. . . . ce 
Anculosa carinatus. . . .. “e 
Succinea obliqua. . . .. . «e 
SGEIM CCL ELUS Ca a i ae 66 
Lymnaea SAE TGLES es My eae as 
Lymnaea palustris . 1. SG 
Lymnaea columella... . . ec 
Lymnaea decidiosa . . . . “e 
Lymnaea catascoplum . . . . Ke 
Planorbis bicarinatus . . . . “e 
Planorbis campanulatus . . . ee 
Planor bis trivolvis eter: “< 
Planorbis magnificus . 2. . “6 
Segmentina armigerus . . . cs 
Segmentina wheatleyi. . . . OG 
Ancylusrivularis . . . . . GG 
Ancylus parallelus . . . . . aie 
Physa hevenostrapog wa = “ 
Aplexa hypnorum . . . . . “ie 
Lymnaea auricularia . .. . Si 
Viviparus malleatus |. . . OG 
Spherium simile. "Enlarged . After Gould 
Sphaerium striatinum. ... *§ “is 
Pisidium GOT DISCS S7LTIZ na tee ss 
Pisidium abditum . .... §§ es 
Unio complanaius . . . . . *§ << 
Lampsilis radiatum . . . . «* sic 
Lampsilis0chraceuy 2a 2s CG 
Lampsilis cariosus 7 Gas Ss 
Anadontacataracta |. , ._* ae 
Anadonta implicata Be es 36 
Margaritana margar dfer Dae. CG BG 
Mar ‘garitana marginata Se ae ees oe 
Tubiculous Worms, V%imnodrilis claparadit 
Author’s original, from life 
Freshwater Polyps, Hydra viridis and H. fusca . 
Author’s original, from life 
Freshwater Polyp, Cordylophora lacustra 
After Hess 
Outline of a Water Beetle. .. . - 
Water-boatman, Corisa interupta. 
Back-swimmer, Notonecta undulata . . 
Water-scorpion, Napa apiculata . 
Water-scorpion, Ramatra fusca 
Giant Water-bug, Belostoma griseum . 
Giant Water-bug, Zaitha fluminea 
Giant Water-bug ae Re 
Creeping Water-bug, Ambrysus signore pide > 
Toad-bug, Belogonus americanus . . . . 
Shore-bug, Sa/da signoretti . . . ... 
. Author’s original, from life . 
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