Fic. 4. 
PLATE XII. 
Ammothea alaskensis sp. nov., male (Lot 25), from above. 
. Ammothea gracilipes sp. nov., male (Lot 9), from above; showing egg-masses 
below. 
. Ammothea pribilofensis sp. nov., male (Lot 23), from above. 
- Ammothella tuberculata sp. nov., female (Lot 22), from above. 
. Ammothella spinifera sp. nov., female ( Lot 14), from above. 
(302) 
