1853.] 267 
SUPPLEMENTARY NoTEs. # 
U. cuneatus, Raf. Having examined several specimens of this shell, it is 
found to be a form between U. patulws and U. clavus, and may be a distinct 
species. ; 
U. fusciolus, Raf. Mr. Poulson’s specimen labelled by Rafinesque, is not U. 
multiradiatus, but certainly U. subangulatus, Lea. 
U. simplex, Lea. It is strange that Mr. Lea should compare this shell with 
U. Hydianus, to which it bears no resemblance, and at the same time overlook 
U. Greenit, Con. His figure might almost answer for a copy of mine. 
U. triangularis, Raf. Mr. Poulson’s cabinet contains no authentic specimen 
of this species, which is one I have never identified. Pachostea, Cliffordiana 
and lateralis are also uncertain species. Lampsilis rosea and pallidw are pro- 
bably varieties of U. ochraceus. 
Table showing the geographical range of the Families Untonipm, MuTELADE and | 
Myceroropipm, and some of the genera and sub-genera. 
Asia. 
Family Unionidae. 
Sub-genera. 
Naia, Swains. _ 
Lanceolaria,* Cox. 
Monodontina, Coz. 
Genera. 
Barbala, Humph. 
Hyriopsis,{ Coz. 
Nodularia,t Con. 
Europe. 
Swb-generu. 
Mysca, Turton. 
Potamida, Swans. 
AFRICA. 
Family Mutelade. 
Mutela, Scopolz. 
Tridella, Coz. 
Pleiodon, Con., Gray. 
Calliscapha, Swazns. 
Spatha, Lea. 
Family Unionide. 
Sub-genus. 
Celatura,§ Con. 
AUSTRALIA. 
Family Unionide. 
Hyridella, Swans. 
Parreysia, Con. 
U. multidentatus, Parreyss. 
Cucumaria,|| Con. 
Nortu AMERICA. 
Family Unionide. 
Sub-genera. 
Eurinea, Raf., Agas. 
Lampsilis, Raf. Agas. 
Canthyria, Swacns. 
Theliderma, Swazns. 
~Cunicula, Swans. 
Genera. 
Metaptera, Raf., Agas. 
Strophitus, Raf. 
Lastena, Raf. 
Complanaria, Swains., Agas. 
Alasmodonta, Say, Agas. 
SourH AMERICA. 
Family Mutelade. 
Genera. 
Leila, Gray. 
Paxyodon, Schum. 
Prisodon, 72. 
Sub-genus. 
Iridea, Swans. 
Family Mycetopodide. 
Mycetopus, D’Ord. 
Family Unionide. 
Genera. 
Lamproscapha, Swains. 
Monocondylea, D?Orb. 
Byssodonta, ub. 
Sub-genus. 
Corrugaria, Con. 
* U. Grayanus, Lea. 
t U Delphinus, Gruner. 
§ U. Egyptiacus. 
t U. Douglasie, Gray. 
|| U. cucumoides, Lea. 
