63 



[Diese Arten sind schon kurz in meiner Monographie der 

 Heliceen erwähnt, hier genauer beschrieben, aber leider 

 keine Abbildungen beigegeben.] Phmorbis regularis^ Bu- 

 ch anenais^bellus ; Physa Hildrethiayiu, in/lata, Troosiiana; 

 Lymnaea Philadelphica , Griffithiana, Nuttalliana, buli- 

 moides . exigua, planalata , fusifurmis, ri/sfica, plica, cu- 

 arciata, casia, parva, curia, strigosa, Kirtlandiana, ru- 

 bella; Paludina regularis, obtusa, Troostiana ; Ai^culosa 

 Troostiana, gibbosn, carinata^ variabilis ; Amnicoln urbi- 

 culata , parva ; lo tenebrosa.) 



2. Jun, 18, 1841. (Helix Mobiliana , minutissima ; 

 Mela7iia turgida, glabra, perfasca,picta, impressa, robusta, 

 Jagatm ; /dnculusa rubiginosa, Griffithiana, tuherculaia ; 

 Valvata bicarinata; Paludina angulata , Coosaensis, cy- 

 clüstomatiformis.) 



3. Dec. 16, 1842. (Melania Vanuxemiana , ovalis^ 

 flaysiana, excisa, Ordiana, brevis, oUva, Foremani, ior- 

 quata, producta, curvata, expansa; Anculosa incisa, 

 Foremani, solida, flammata; Paludina incrassata, co- 

 arctata.) 



4. Aug. 18, 1843. (Unio amygdalum, Buckleyi, 

 minor, fuscatus^ ßuddianus, irossulus, occultus, Mon- 

 roensis, ahencus, veglectus^ superbus, aratus.) 



5. May 2, 1845. (Unio hippopaeus , latecostatus, 

 utriculus, hyalinus , atrocostatus , pellucidus, tumescens, 

 pemodosus , flavescens , fulgidus^ symmetricus, unicolor, 

 approximus, caperatus, simplex, Gouldii, Estabrookianus^ 

 Binneyi, fuliginosus, palkscens, caliginosus, spatulatus, 

 compressissirnns, pulvinulus ; Anodonta tetragona ; Mar- 

 garitana minor ; Melania solida, proteus^ lugubris, torta, 

 spurca , abrupta , basalis , modesta , Haleiana, pumila, 

 Alexandrensis y ovoidea, auriculaeformis , carino-cosiata, 

 ßlum, spinalis, pallescens, Buddii, harpa, arctata, crebri- 

 striata, nobilis, pernodosa ; Anculosa squalida, iintinna- 

 bulum; Schizostoma [nov. gen.] pagoda, Buddii, Baby- 



