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. subovaius, 74. U. pileus. 
Mr. Lea’s new genus Symphynota, we anhounced 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. 
1. S. levissima. 
2. S. bitalata, Local. Canton. 
5. S. cleey: i Unio alatus, Say and Barnes. 
alata, Lam. and Swainson. 
4. S. complanata, Alasmodonta complanata, Barnes. 
5. S. compressa. 
Unio gracilis, Barnes. 
6. S. gracilis, fragilis, Swainson. 
planus, Barnes. 
7. S. tenuissima. 
8. S. ochracea, Unio ochraceus, Say. 
Mytilus cygneus, Lin. Local. 
oe ; Assan Canes, Lam. ; Eorope. 
10. S. bi-lineata, Local. Hindostan. 
11. S. inflata. | 
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 
