NO. 3 HARTMAN : ORBINIIDAE, APISTOBRANCHIDAE, PARAONIDAE 325 



(Annenkova) (see below) in having branchiae present from the fourth 

 instead of fifth segment; they number 29 to 33, instead of 15 to 23 

 pairs. 



Distribution. — Aricidea (Cirrophorus) furcata has been recovered 

 only in soft bottoms of San Pedro area, California. 



Aricidea (Cirrophorus) lyriformis (Annenkova) 1934 



Paraonis (Paraonides) lyriformis Annenkova, 1934, pp. 656-657, fig. 



IB. 

 Aricidea {Cirrophorus) lyriformis Annenkova, 1937, p. 172. 



This species was originally described from the White Sea in 230 to 

 240 meters. A median prostomial antenna was thought to be absent and 

 it was thus referred to Paraonis. As collections made later in the Tartar 

 Strait revealed the presence of an antenna, the generic change was neces- 

 sitated (Annenkova, 1937, p. 172). 



Distribution. — Aricidea (Cirrophorus) lyriformis (Annenkova) 

 is known only from the White Sea and Tartar Strait in deep water. 



Genus Aricidea (Aedicira) new subgenus 

 Type Aricidea (Aedicira) pacifica Hartman, 1944 



The prostomium is broadest at its anterior end and weakly convex 

 to emarginate at its frontal margin. Setae are all slender and distally 

 pointed ; there are no modified spines. Branchiae are present from the 

 fourth setigerous segment and number 12 to 60 or more pairs. The 

 subgeneric name is coined from the letters of the generic one. 



Key to Species 



1. Prostomial antenna branched .... ?A. (A.) ramosa 



1. Prostomial antenna undivided 2 



2. Branchiae numbering about 60 pairs and tapering distally to a 

 long slender tip A. {A.) pacifica 



2. Branchiae numbering 13 to 21 pairs and terminating in an 

 abruptly slenderer short tip . . . A. (A.) belgicae 



In addition Aricidea suecica, sensu Wesenberg-Lund (1950b, pp. 32- 

 33) from west of Greenland and in 1096 meters, off Jan Mayen, Nor- 

 way, in 699 meters, and from between the Faroes and Shetland Islands, 

 England, in 887 meters, seems to belong to this subgenus since it is said 

 to have only capillary setae throughout. 



