i6 

 3. Subgenus Cyanoplax Pilsbry. 



*xi. Trachydermon hartwegi (= nuttalli Carp.). 



H. A. Pilsbry. Nautilus, Vol. VIII, 1894 — 1895, Pag. 45. 

 H. A. Pilsbry. Man. XIV, Pag. 45. 



Californien. 



*I2. Trachydermon raymondi Pilsbry. 



H. A. Pilsbry. Nautilus, Vol. VIII, 1894— 1895, Pag. 45. 

 Californien. 



*I3. Trachydermon bipunctatus Sow. 



H. A. Pilsbry. Man. XIV, Pag. 46. 

 Peru. 



4. Subgenus Spongioradsia Pilsbry 



*I4. Trachydermon aleuticus Dall. 



H. A. Pilsbry. Man. XV, Pag. 65; XIV, Pag. 84. 



Aleuten. 



*I5. Trachydermon multidentatus Carp. 



H. A. Pilsbry. Man. XIV, Pag. 85; XV, Pag. 65. 

 Bonin-Inseln. 



*i6. (?) Trachydermon lindholmi Schrenck. 

 H. A. Pilsbry. Man. XIV, Pag. 85. 

 Bai von Hakodadi, Japan. 



Chaetopleura Shuttleworth. 



*i. Chaetopleura dieffenbachi Roch. 



H. A. Pilsbry. Man. XIV, Pag. 35. 

 Newcastle, Australien. 



2. Chaetopleura aspcrior Carp. 



H. A. Pilsbry. Man. XV, Pag. 74; XIV, Pag. yj. 

 Ost Asien. 



