NO. 2 HARTMAN, BARNARD: BENTHIC FAUNA OF DEEP BASINS 155 



Genus AMPHARETE Malmgren, 1866 



Ampharete arctica Malmgren, 1866 

 Berkeley and Berkeley, 1952, pp. 65-66, figs. 133-135. 



Specimens come from San Pedro Basin; many more and larger ones 

 were taken in shelf and slope depths along shore (unpublished). The 

 species constructs mud walled tubes, externally covered with algal and 

 other detrital bits, untidy in appearance ; it grossly resembles that of an 

 onuphid, Diopatra ornata Moore. The species is regarded as cosmopoli- 

 tan and eurybathic. 



? Ampharete sp. 



Small individuals measuring less than 15 mm long were taken in 

 San Nicolas Basin. They were removed from silt covered, mucoid tubes. 

 The largest, measuring about 0.8 mm wide, may be mature. The thorax 

 is about half of the total length. The body consists of 14 thoracic and 

 at least 14 abdominal setigerous segments. The prostomium is 3-lobed, 

 has a pair of large black ocular areas at the sides. Paleae are well devel- 

 oped and number about 15 on a side; they form spreading fascicles. 

 Each one is long, distally tapering, acicular, and terminates in a slender 

 pointed tip. These individuals may represent an unknown species. 



Genus AMPHICTEIS G rube, 1850 



Amphicteis Pscaphobranchiata Moore, 1906 



Moore, 1906, pp. 255-257, pi. 12, figs. 54-61. 

 Berkeley and Berkeley, 1952, pp. 68-69, figs. 139-141. 



Specimens come from San Pedro, San Nicolas and questionably Tan- 

 ner Basins. They are smaller than representatives from shallower depths 

 and some have reduced prostomial eyes, but in other respects they seem 

 to agree. The tube is mucoid, externally covered with mud, sponge 

 spicules and other inert materials ; it appears untidy. The species is more 

 widely known from the northeast Pacific Ocean, in shallow to deep 

 bottoms. 



Amphicteis mucronata Moore, 1923 



Moore, 1923, pp. 203-206. 



Berkeley and Berkeley, 1952, p. 69, fig. 142. 



This species was taken in San Pedro and Santa Catalina Basins. It 

 differs from A. scaphobronchiata (see above) in being much smaller and 



