172 Miscellanies. 
20. U. ventricosus, Barnes. 
21. U. siliquoideus, Barnes. inflatus, Barnes. 
22. U. triangularis, Barnes. 
The following are the American species added by Mr. Lea: viz. 
23. U. parvus, 24. U. esopus, 25. U. calceolus, 26. U. lanceo- 
latus, 27. U. donaciformis, 28. U. ellipsis, 29. U. irroratus, 30. la- 
crymosus, 31. U. ater, 32. U. rubiginosus, 33. U. heterodon, 34. 
U. sulcatus, 35. U. planulatus, 36. U. circulus, 37. U. multiradia- 
tus, 38. U. occidens, 39. U. securis, 40. U. iris, 41. U. zig-zag, 
42. U. patulus, 43. U. trapezoides, 44. U. multiplicatus, 45. U. as- 
perrimus, 46. U. congareus, 47. U. oriens, 48. U. brevidens, 49. 
U. pustulosus, 50. U. stapes, 51. U. pustulatus, 52. U: lens, 53. U. 
anodontoides, 54. U. glans, 55. U. elegans, 56. U. ebenus, 57. U. 
asper, 58. U. fabalis, 59. U. soleniformis, 60. U. acutissimus, 61. 
U. varicosus, 62. U. castaneus, 63. U. multistriatus, 64. U. decisus, 
65. U. obesus, 66. U. pyramidatus, 67. U. trigonus, 68. U. formo- 
sus, 69. U.-perplexus, 70. U. angustatus, 71. U. arceformis, 72. 
U. subrotundus, 73. U. subovatus, 74. U. pileus. 
Mr. Lea’s new genus Symphynota, we announced in Vol. XVI, 
p- 378 of this work: here follows the nomenclature of that genus so 
far as it is contained in his published papers. 
. S. levissima. ; 
2. S. bi-alata, Local. Canton. 
Unio alatus, Say and Barnes. 
eee, ua Lae and Swainson. 
4. S. complanata, Alasmodonta complanata, Barnes. 
5. S. compressa. 
Unio gracilis,, Barnes, __ 
- gracilis, —— fragilis, Swainson. 
planus, Barnes. 
> 
7. S. tenuissima. 
Ss 
8. S. ochracea, Unio ochraceus, Say. : 
OB epsnea, : { Mytilus cygneus, Lin. i ae 
Anodonta cygnea, Lam. 
: Local. Hindostan. 
Mr. Lea has figured all his species of American Uniones, together - 
with two foreign species of the same genus, (the one from India and 
the other probably from Africa,) which he proposes as new, under 
the names of incurvus and olivarius ; also, his six newly described 
