56 



59a. — Limnoe — var. umbilioata, Adams. Tr. I, iii, 58. 



60.— " desidiosa, Say. Tr. I, i, 39 j II, 263, 265. 



61.— " humilis, Say. Tr. I, i, 39. 



62.— « gracilis, Jay. Tr. I, i, 39 ; 62, pi. II, f. 4. 



63.—? " lepida, Gould. Tr. 1, iii, 58. 



64.— Physa Lordii, Baird. Tr. I, i, 39 and 62, pi. II, f. 3 j iv. 74; 

 Ot. Nat. Ill, 67. 



gyrina, Say. Tr. I, iii, 58 ; II, 264. 



ancillaria, Say. Tr. 1, i, 39 ; II, 263. 264. 



Billingsii, Heron. Tr. I, i, 39 (as brevispira, Lea) ; I, i, 

 62, pi. II, f. 5. 



heterostropha, Say. Tr. I, i, 39 ; II, 264, 265, 266. 



hypnorum, Linn. Tr. I, i, 39. 



70. — Planorbis campanulatus, Say. Tr. I, i, 39 ; II, 263. 



trivolvis, Say. Tr. I. i, 39 ; II, 263, 4, 5, 6, Ot. Nat. 

 Ill, 67. 



— var. macrostomus, Whiteaves. Tr. I, i, 39 ; Ot. 

 Nat. Ill, 67. 



bicarinatus, Say. Tr. I, i, 39 ; II, 132, 266 ; Ot. Nat. 

 Ill, 67. 



exacutus, Say. Tr. I, i, 39 ; II, 264. 



deflectus, Say. Tr. I, i, 39 ; II, 264, 265. 



albus, Mull. Tr. I, i, 39 (as hirsutus) ; II, 266. 



parvus, Say. Tr. I, i, 39. 



Billingsii, Lea. Tr. I, i, 39. 

 78. — Planorbis armigerus, Say. Tr. I, i, 39. 

 79. — Ancylus parallehis, Hald. Tr. I, iii, 58. 

 80.— " rivularis, Say. Tr. I, i, 39. 



C. — Land Shells. 



81.— Selenites concava, Say. Tr. I, i, 40; II, 130, 212, 263. 

 82.— Limax agrestis, Mull. Tr. I, iv, 74 ; II, 131, 222. 

 83.— " campestris, Binney. Tr. I, i, 39 ; II, 131, 223. 

 84.— Vitrina lirapida, Gould. Tr. I, i, 39 ; II, 222. 



85.— Zonites (Mesomphix) inornatus, Say. Tr. I, i, 40 ; II, 212, 263, 



264. 



86.— " (Hyalina) nitidus, Mull. Tr. I, i, 40, 62, pi. II. f. 6; 

 II, 131, 213. 



