NO. 2 H ARTM AN, BARNARD: BENTHIC FAUNA OF DEEP BASINS 149 



It is presumed to be a representative of M. glebifex, known more widely 

 from European seas and the northeast Pacific Ocean (Berkeley and 

 Berkeley, 1952, p. 45). 



Genus AS YCHIS Kinberg, 1867 



Asychis lacera (Moore) 1923 

 Maldane lacera Moore, 1923, pp. 235-237. 



Single, large individuals, with tubes measuring to 180 mm long, were 

 taken in Santa Catalina and Santa Barbara Basins. The original collec- 

 tion was taken off Point Lima light, in 549-595 fms. The species is 

 typically a deep water form. 



Asychis spp. 



Fragments, including cephalic and anal plaques, were taken in San 

 Pedro, San Nicolas, West Cortes Basins and Patton escarpment. Most 

 have a deep collar preceding the first setigerous segment. In one from 

 West Cortes Basin, the cephalic plaque has U-shaped nuchal organs and 

 the posterior flange is entire. Another, from San Nicolas Basin, has both 

 plaques ornamented along the lateral margins. None agrees with A. dis- 

 paridentata Moore (1923, p. 237) best known from shallower depths 

 ( unpublished records) . 



Family OWENIIDAE 



Genus MYRIOCHELE Malmgren, 1867 



Myriochele gracilis Hartman, 1955 



lubes with small individuals were taken in San Pedro, Santa Cata- 

 lina and questionably San Nicolas Basins. This species occurs more 

 widely in slope depths of southern California (unpublished records). 



Myriochele pygidialis, new species 

 (Plate 16, figs. 1-4) 

 The type is selected from West Cortes Basin (Sta. 5944) ; others 

 are from Santa Cruz, San Nicolas, San Clemente, East Cortes and Long 

 Basins. The tube is long, tough, internally heavily chitinized and exter- 

 nally covered with silt and prickly particles; it measures 210 to 250 mm 

 long by 1.17 mm wide and is cylindrical. The animal, dissected out of a 

 tube, measures 57 mm long by 0.65 mm across and consists of about 43 



