338 



PROCEEDINGS OF THE NA TIONAL MUSEUM. 



TABLP: of distribution of north AMERICAN VENERID/E. 



W. = WEST COAST; E. = EAST COAST. 



[Extralimital species in piarentlieses.] 



GENUS AND SECTION. 



Dosinia: 



Dosinidia 



dementia 



Transennella . 

 Tivela 



Pachydesma 

 Gaf rarium : 



Gouldia 



Macrocallista 



Chionella . . . 

 Amiantis 



Eucallista . . . 

 Callocardia 



Agriopoma . . 

 Pitaria 



HysterocoiK'ha 

 Lamelliconcha . 



Cytherea 



Ventricola 



Saxidoniiis 



Cyclinella 



Chione 



Timoclea. . 



Lirophora. 

 Anomalocardia 

 Venus 



Marcia 



Venerella . 



Protothaca 



Callithaca. 



Temperate 

 or Ore- 

 gon ian. 



W. 



1 



1 



1 



I 1 



Liocyma ' 3 



Venerupis 1 



Gemma 



Parastarte 



Psephidia 2 



Totals in each fauna 14 



Species native to both oceans 



Total North American Yeneridfe. 



14 



WORKS REFERRED TO IN THE TEXT. 



1692. Lister, Historise conchyliorum, I-IV et appendix, 1685-1692. 



1758. Linnaeus, Systema Naturae, tenth edition. 



1761. Linnaeus, Fauna Suecica. 



1767. Linmeus, Systema Naturw, twelfth edition. 



1771. Murray, Fundamenta testaceologica. 



1776. Da Costa, Elements of Conchology. ( Not consistently binomial. ) 



1777. Scopoli, Introductio ad Historia Naturalis. 



