NO. 2 HARTMAN, BARNARD: BENTHIC FAUNA OF DEEP BASINS 153 



9. Branchiae not so prolonged 10 



10. With 14 or 15 abdominal segments . . A mage anops 

 10. With 10 abdominal segments . . . A mage scutata 



Genus AMAGE Malmgren, 1866 



Amage scutata Moore, 1923 

 Moore, 1923, pp. 210-212, pi. 17, figs. 19-24. 



This species was first described from collections off Point Pinos light 

 in 40-46 fms, green mud, and in Santa Catalina Basin in 302-638 fms, 

 green mud. It has been collected more recently in shallower bottoms 

 (unpublished records) but not from basin depths. The species is known 

 only from southern California from moderate to deep bottoms. 



Amage longibranchiata, new species 

 (Plate 17) 

 Amage anops and var. Hartman and Barnard, this volume, pp. 36-61. 



The type specimen was selected from Santa Monica Basin (Sta. 

 3020) ; others come from Santa Monica, San Pedro and Santa Cruz 

 Basins. The species is characterized by its greatly prolonged 4 pairs of 

 branchiae (Plate 17) ; they are of a single kind, have a thick base and 

 taper distally; when laid back they reach nearly to the end of the body. 

 They are inserted in tandem series, with those of successive pairs slightly 

 approaching medially but widely separated from each other at the most 

 proximal positions. The fourth branchia is inserted on the third, or first 

 setigerous, papillar parapodium, and the other 3 pairs are progressively 

 more forward on the dorsolateral sides of segments. 



The prostomium is 3-lobed, flat, and without eyes or other color 

 markings. Its median part is broadly quadrate and its lateral areas are 

 auricular at the sides, behind the shorter quadrate area. The peristomium 

 or first segment has similar ear-shaped fleshy lobes that are continued 

 across the ventrum to form a large, thick, grooved lower lip. Within the 

 oral cavity the numerous, smooth, slender oral tentacles can be seen, all 

 of one kind and crowded. 



The second segment, best seen on the ventral side of the body, is 

 dorsally crowded between the peristomium and the following segment. 

 It lacks parapodia, branchiae or other structures. The third segment is 

 large, broad and laterally extended as a pair of fleshy lobes; it is the 



