ISOPODS OB^ NORTH AMERICA. 



371 



Yakutat; Glacier Bay; Garforth Island in Muir Inlet and Sitka, Alaska; 

 Beaver Cove on Vancouver Island; Land's End, California; Gabnola 



FIG. 402. PENTIDOTEA wos- 

 NESENSKII. MALE. 



FIG. 403. PENDITOTEA WOSNESENS- 

 KII. FEMALE. 



Island; Taylor Bay; Boca de Quadra; Head of Mink Arm; San Fran- 

 cisco, California; Gulf of Georgia; Farallone Islands, California; Fort 

 Point, San Francisco, California; 

 Port Renfrew, British Columbia. 

 (R. Osburn.) 



Depth. Surface to 9 fathoms. 

 Found at low tide, on beach, in sand 

 and rocks; under stones. 



Body oblong-ovate, with the sides 

 of the thorax nearly parallel; length, 

 three times its greatest breadth, 11 

 mm.: 32 mm. Length of abdomen 

 about three-eighths the entire length 

 of body, 13 mm.: 32 mm. Head 

 wider than long, with frontal margin 

 slightly excavate; posterior portion 

 somewhat wider than anterior por- 

 tion. Eyes small, compound, transversely ovate, and situated at the 

 extreme lateral margin, about halfway between the anterior and pos- 

 terior margins. The first pair of antennae are composed of four 

 articles; the basal article is about twice as broad as any of those fol- 

 lowing; the first, second, and third articles are about equal in length; 

 the fourth is a little longer and clavate in shape. The first antenme 

 extend a little beyond the middle of the third article of the peduncle 

 of the second pair of antennas. The second pair of antenna? have 



FIG. 404. PENTIDOTEA 

 MAXILLIPED. x 15j. 

 x 15}. 



WOS.VESEXSKII. a, 



b, FIRST ANTENNA. 



