NO. 13 coe: revision of the nemertean fauna 301 



73a. Amphiporus imparispinosus Griffin, 1898; 

 var, similis (Coe), 1905 

 A. similis Coe, 1905. 



Differs from the typical form in having 2, instead of 3, pouches of 

 accessory stylets. 



Habitat. Same as in typical form, with which it is often associated. 



Distribution. Puget Sound and southward at least as far as Ensenada, 

 Mexico. 



74. Amphiporus macracanthus Coe, 1905 



A. macracanthus Coe, 1905a. 



Distribution. Dredged in shallow water in the Arctic Ocean off Cape 

 Smyth and Wainwright Inlet, Alaska. 



75. Amphiporus nebulosus Coe, 1901 



A. nebulosus Coe, 1904, 1905, 1905a. 



Habitat. Under stones between tidemarks. 



Distribution. At present known only from the coast of Alaska. 



76. Amphiporus occidentalis Coe, 1905 



A. occidentalis Coe, 1905a. 



Distribution. Known only from 2 specimens dredged at about 70 and 

 170 m off the coast of Washington. 



77. Amphiporus pacificus Coe, 1905 



A. pacificus Coe, 1905a. 



Habitat. This species has been obtained only by the dredge at depths 

 of 70-180 m. 



Distribution. Bering Sea and off the coasts of Washington and central 

 California. 



78. Amphiporus paulinus Punnett, 1901 



A . paulinus Coe, 1904, 1905. 



Distribution. At present known only from Pribilof Islands, Bering 

 Sea. 



