NO. 3 HARTMAN : ORBINIIDAE, APISTOBRANCHIDAE, PARAONIDAE 319 



Aricidea suecica, reported from west of Greenland in 1096 to 2258 

 meters, Jan Mayen, Norway, in 699 meters, and off the Faroe Islands, 

 England, in 887 meters by Wesenberg-Lund (1950b, pp. 32-33, fig. 35, 

 and 1953, p. 160), differ from the original specimens in that the pros- 

 tomium is broadly equitriangular and lacks eyes ; the prostomial antenna 

 is short and conical and branchiae number 17 to 28 pairs; setae are 

 said to be entirely capillary. These specimens by diagnosis would thus 

 go to the subgenus Aedicira (see below). 



Aricidea heteroseta Hartman (1948a, p. 33, fig. 9) from Lazy Bay, 

 Alaska, is here referred to A. suecica Eliason from western Europe. 

 Modified setae are similarly sigmoid acicular and have a distal arista, as 

 shown by Eliason (1920, fig. 15). Aricidea jeffreysii Berkeley and 

 Berkeley (1950, p. 55) from western Canada may be the same, accord- 

 ing to this interpretation, since posterior modified setae have no terminal 

 hood. 



Distribution. — Aricidea suecica Eliason is recorded from Denmark 

 in 12 to 28 meters, from southern Alaska in shallow water, and pos- 

 sibly western Canada and Soviet Arctic localities (Annenkova, 1946, 

 pp. 185-188). Southward (1955) reported it from the British Isles. 



Aricidea near suecica Eliason, 1920 

 Plate 43, fig. 7 



Aricidea jeffreysi Hartman, 1955, pp. 50, 169. Not Mcintosh, 1879. 

 Aricidea sp. Hartman, 1955, pp. 60, 73, 77, 170. 



Collections.— 1149-40 (2); 1229-41 (1); 1321-41 (1); 1990-50 

 (20); 2030-51 (4); 2035-51 (24); 2113-52 (1); 2114-52 (53); 

 2116-52 (2) ; 2120-52 (about 90) ; 2125-52 (1) ; 2128-52 (7) ; 2152- 

 52 (16); 2175-52 (4); 2176-52 (6); 2227-53 (9); 2228-53 (10); 

 2230-53 (8) ,-2232-53 (11); 2233-53 (1); 2307-53 (1); 2311-53 (1); 

 2337-53 (3) ; 2338-53 (1) ; 2389-53 (2) ; 2403-53 (1) ; 2411-53 (4) ; 

 2412-53 (12); 2445-53 (1); 2507-53 (1); 2646-54 (7); 2723-54 

 (2) ; 2788-54 (4) ; 2836-54 (3) ; 2839-54 (2) ; Gulf of California near 

 La Paz, Mexico (2, collected by Jens Knudsen). 



The individuals listed under Collections are easily separable into two 

 groups. Thus in a large lot from 2120-52, there are about 30 specimens 

 in which the prostomial antenna is short and clavate or only a fraction 

 of the prostomial length; the other 60 are smaller and have an antenna 

 that reaches back as far as the fifth branchial segments. In other respects 

 they are the same. Both forms have a long, cirriform notopodial post- 

 setal lobe in postbranchial segments. Neuropodia have transverse series 



