154 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 22 



first branchial segment. The fourth is the second branchial segment and 

 its lateral edge is provided with a small papillar lobe, representing a 

 parapodium but lacking setae. The fifth segment is similar but its para- 

 podium is slightly larger, and by the sixth segment it is even larger and 

 provided with a tuft of slender setae. The seventh segment is the first 

 normal one; its notopodium is a large, conical lobe with a full tuft of 

 long setae and its neuropodium has a transverse row of uncini. This 

 pattern is continued posteriorly through 10 segments. 



The abdomen is abruptly narrower and tapers to a slender pygidium 

 surrounded by small papillae. The thorax thus consists of 12 setigerous 

 and 1 1 uncinigerous segments, and is followed by the abdomen with 1 1 

 uncinigerous segments. 



Abdominal notopodia are small papillar lobes widely spaced from the 

 corresponding neuropodia. Thoracic uncini are avicular, have a large 

 base and terminate in 5 teeth in a single row; the lowest tooth is the 

 largest and the more distal ones are successively smaller. Abdominal 

 uncini are similar but smaller; they too terminate in 5 teeth in a single 

 row. 



The tube is thick, mud or silt covered, and usually much longer than 

 the occupant within. Larger tubes measure 100 to 140 mm long by 10 

 mm wide, and enclose an animal about 30 mm long. 



Amage longibranchiata differs from other species of the genus as 

 indicated in the key above. It has been taken only in subsill depths of 

 the inner series of basins, and in sediments of fine green muds. 



Amage anops (Johnson) (1901, p. 424), with which this was first 

 identified (Hartman and Barnard, this volume, pp. 36-51), is another 

 species; it has short branchiae and 14 thoracic setigerous segments. It is 

 known to occur from western Washington to California (Berkeley and 

 Berkeley, 1952, p. 72) and has been taken in shallower soft bottoms of 

 southern California (unpublished data). 



Amage sp. 



Small, less than 10 mm long, cylindrical tubes, containing smaller 

 specimens, come from San Pedro, Santa Cruz and Tanner Basins. The 

 tubes are externally covered with mud and an outer layer of white, 

 orbicular foraminifers. The specimens have not been specifically identified. 



