68 THE NAUTILUS. 



Thyasira trishmata polygona Jeff. A few valves dredged in 

 50-60 fathoms Also taken at north end of Dall Island. 



Oiplodonta orbella Gld. Rather common. Much less globose 

 than California specimens. 



Pkacoides (Lucinoma) annukatus Rve. A few specimens 

 dredged in 40-60 fathoms. 



Phacoides (Parvilucina) tenwisculptus Cpr. Fairly common 

 -55-50 fathoms. 



Kellia laperousii Desh. Abundant in dead shells of Marcia 

 kennerlyi. 



Rochefortia twnida Cpr. A few valves dredged. 



Cardium (Cerastoderma) californiense Desh. Abundant 10-40 

 fathoms. 



Protocardia centifttosa richardsoni Whiteaves. Common 50-60 

 fathoms. 



Saxidamus gigantew Desh. Dead valves found occasionally. 

 Abundant in inside waters. 



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



Marcia mbdiaphana Cpr. Rather common 50-60 fathoms. 



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

 tween boulders. Very abundant in inside waters. 



Psephidea ovalis Dall. Common 15-40 fathoms. 



Tellina (Oudardia) button! Dall. Rather common in 50 

 fathoms. 



Tellina (Angulus) carpenter i Dall. Fairly common with last. 



Tellina (Moerella) salmonea Cpr. One pair of dead valve? 

 dredged in 40 fathoms. 



Macoma calcarea Gmel. A few immature specimens dredged 

 in 50-60 fathoms. 



Semele rubropicta Dall. Occasional 25-40 fathoms. 



Psammobia (Gobraens) californica Conr. Rather common. 



Siliqua patula Dixon. One dead young specimen dredged. 

 Common in inside waters. 



Spisula (Hemimactra) polynyma alaskana Dall. Dead valves 

 found occasionally. Common in mud flats on inside waters. 



My a truncata Linn. Fairly common. 



Panope generosa Gld. Single valves dredged occasionally. 



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

 fathoms. 



