48 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 27 



Family HETEROSPIONIDAE, new 

 Includes LONGOSOMIDAE Hartman, 1944 



Heterospio Ehlers, 1875 

 IncUides Longosoma Hartman, 1944 



Heterospio sp. 



San Diego trench, in 420 m (palp only) 



The family LONGOSOMIDAE Hartman (1944, p. 322) is here 

 referred to the family HETEROSPIONDAE, new, because its 

 only genus, Longoso/na Hartman (1944, p. 322) previously known 

 only from southern California in shallow depths, is believed generically 

 referrable to Heterospio Ehlers (1875, p. 60) known only through a 

 single species, //. longissima Ehlers (1875, p. 60) dredged off western 

 Ireland in 426 fms; it has remained unknown except through its first 

 find in 1869. The author has recently seen specimens taken east off 

 Bermuda, in deep water, which are generically identical with 

 Loiigosoma catalinensis Hartman (1944, p. 322). A more complete 

 account of the north Atlantic species will be forthcoming in a later 

 report. 



Family CHAETOPTERIDAE 



Phyliochaetopterus limicolus Hartman, 1960 



Dume en, in 299 m ( 1 in large tube, measures 200 mm long by 

 6 mm wide). 



Mugu en, in 119 m (3), 177 m (1), 367 m (1 with large tube). 



Redondo en, south wall, in 76 m (1 fragment), 232 m (2 large 

 with tubes), 378 m (1 large anterior end and tube measuring 530 

 mm long), 542 m (3 with tubes), north wall, 107 m (1), 120 m 

 (3+), 122 m (1), axis, 239 m (1), 246 m (1 large tube), 282 

 m (1), 378 m (1 large), 503 m (large empty tube), fan, 652 m 

 (1 fragment), 660 m (2, with large tubes), 686 m (1 + ), 715 m 

 (1 large), 751 m (2 with tubes), 786 m (1), 810 m (tubes only). 



San Pedro sea valley, in 221 m ( 1 ) . 



La Jolla en, in 793 m ( 1 ) . 



Coronado en, in 177 m (1), 812 m (tube fragment 5 mm across). 



Santa Cruz en, in 902 m (tubes only), 1387 m (1 large). 



Tanner en, in 298 m ( 1 ) , 644 m (2) . 



Phyliochaetopterus prolifica Potts, 1914 

 Dume en, trawled in 80-100 m, rocky (several). 

 Santa Monica en, trawled in about 80 m, rocky (many). 

 Santa Cruz en, in 89 m ( 1 ) . 



