68 THK NAUTILUS. 



ThyiiMra truimuitn polygoiKi Jeff. A few valves dredged in 

 oO-GO fathoniH Also taken at north end of Dall Island. 



Diphdonta arbella Old. Rather common. Much less globose 

 than California specimens. 



Pharoide.-i {Lucinomd) annulaiUK Rve. A few specimens 

 dredged in 40-60 fathoms. 



Phdcoides (Parviluchui) tenuiaculpliui Cpr. Fairly common 

 25-o0 fathoms. 



Kellia lapermisii Desh, Abundant in dead shells of Afarcia 

 kennerlyi. 



Rochefortia tumida Cpr. A few valves dredged. 



Cnrdium (Cerdstodemia) califomiense Desh. Abundant 10-40 

 fathoms. 



Protocardia centiJUosa richardsoni Whiteaves. Common 50-60 

 fathoms. 



Saxidomiis yiijanlen^ Desh. Dead valves found occasionally. 

 Abundant in inside waters. 



Marcia kennerlyi (Cpr. ) Rve. Abundant 20-40 fathoms. 



Marcia s-vbdviphana Cpr. Rather common 50-60 fathoms. 



Paphia {Protothaca) staminea Conr. Occasional in gravel be- 

 tween boulders. Very abundant in inside waters. 



Pgqjhidea oralis Dall. Common 15-40 fathoms. 



Tellina {OudardUi) huttoni Dall. Rather common in 50 

 fathoms. 



Tellina (Angidus) carpenteri Dall. Fairly common with last. 



Tellina (Moerella) sabnonea Cpr. One pair of dead valves 

 dredged in 40 fathoms. 



Macoma calcarea Gmel. A few immature specimens dredged 

 in 50-60 fathoms. 



Semele rubropicta Dall. Occasional 25-40 fathoms. 



Psammobia (Gobraeus) californica Conr. Rather common. 



Siliqua patula Dixon. One dead young specimen dredged. 

 Common in inside waters. 



Spisula (Hemimactra) polynyina alaskana Dall. Dead valves 

 found occasionally. Common in mud flats on inside waters. 



Mya tmncata Linn. Fairly common. 



Panope geiierosa. Gld. Single valves dredged occasionally. 



Panomya arctica Lam. A few specimens taken in 50-60 

 fathoms. 



