NO. 2 HARTMAN, RARNARD : BENTHIC FAUNA OF DEEP RASINS 109 



Scoloplos acmeceps is known from Alaska south to western Mexico, 

 in littoral zones, associated with algae and other plants. The subspecies 

 profundus has been found only in the deeper parts of the basins, in sedi- 

 ments of green silty muds. 



Genus CALIFIA Hartman, 1957 



Califia calida Hartman, 1957 

 Hartman, 1957, pp. 306-308, pi. 42, figs. 1-3. 



Individuals were taken in West Cortes, East Cortes, San Clemente 

 and Velero Basins. They agree with some coming from the deeper parts 

 of the San Pedro slope, the type locality. The species may be regarded 

 as typically a deep water or basin form. 



Family PARAONIDAE 



Nine species in 4 genera or subgenera are represented. They may be 

 identified according to the following key. 



Key to species 

 1. Prostomium without a median antenna .... 2 



1. Prostomium with a median antenna 4 



2. Branchiae number 28 to 36 pairs . Paraonis multibranchiata 



2. Branchiae typically fewer than 20 pairs ..... 3 



3. Prostomium without paired eyespots . Paraonis gracilis 



3. Prostomium with a pair of eyespots 



Paraonis gracilis oculata 



4. Prostomial antenna branched . . . Aricidea ramosa 



4. Prostomial antenna simple, cirriform to very short . . 5 



5. Postbranchial segments with spinelike hooks in notopodia 6 



5. Postbranchial segments with spinelike hooks in neuropodia 7 



6. Branchiae number about 15 pairs; body pale .... 

 Aricidea aciculata 



6. Branchiae number usually more than 30 pairs; body reddish 

 brown or speckled Aricidea furcata 



7. Prostomial antenna greatly prolonged ; anterior thoracic region 

 and prostomium broadly depressed ; larger in size 

 Aricidea uschakovi 



7. Prostomial antenna not prolonged ; body not unusually broad 

 or depressed ; smaller in size 8 



