36 



PROCEEDINGS OF THE NATIONAL MUSEUM 



incision, both projecting equally; coxa 1 produced forward; peduncular 

 process of uropod 1 -vestigial. 



Female: Gnathopod 1 unlike that of male, article 5 shorter than 6 

 and with an unmodified hind lobe, gnathopod 2 with sixth article like 

 that of first gnathopod, but stouter; antenna 1 slightly longer than 

 in male, hence both pairs of antennae are more unequal in length. 



Material: Velero station 1453 (1). 



Record: Off Newport Bay, Calif., 6-18 fms. 



Figure 23. — Ampithoe valida Smith, female, 12.0 mm., Coos Bay, Oreg.: a, b, gnathopods 

 1, 2; male, 10 mm.: c, lower lip; d-g, uropods 1, 2, 3, 3; h, telson. 



Remarks: Stephensen's figures show sufficient distinctions that 

 subspecific rank might be held for the Japanese population; the female 

 second antennae are heavily setose and the male first gnathopods 

 have article 5 shorter and without the posterior lobe produced distally, 

 but Nagata (1960) confirms that article 5 appears as shown herein. 



Distribution: Atlantic Ocean: Long Island and New Jersey. 

 Pacific Ocean: Japan at Shizuoka Prefecture; Oregon; California 

 south to Newport Bay. 



