318 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 15 



Aricidea fauveli, new name 

 Plate 43, fig. 1 



Aricidea fragilis Fauvel, 1936, pp. 65-66, figs. 6, 7. Not Webster, 1879. 



This differs from Aricidea fragilis (see above) in that posterior 

 neuropodial setae are curved acicular with the tip covered by a pointed 

 hyaline hood (fig. 1). Branchiae are first present from the fourth seti- 

 gerous segment and number 18 to 31 pairs. Aricidea Jeffrey sii, sensu 

 Fauvel (1927a, p. 75, fig. 25 a-e) from France is perhaps the same 

 (see Fauvel, 1936a, p. 65, for synonymy). 



Distribution. — Morocco and possibly other parts of the Mediter- 

 ranean Sea. 



Aricidea lopezi Berkeley and Berkeley, 1956 



Aricidea lopezi Berkeley and Berkeley, 1956, p. 542, figs. 1-3. 



According to its description, this has three prebranchial setigerous 

 segments; branchiae number 17 or 18 pairs, and posterior neuropodial 

 setae are distally knobbed and covered with a long, pointed hood. In 

 these respects it approaches A. fauveli (above) from the Mediterranean 

 Sea. If identical, the specific name, lopezi, has priority. 



Distribution. — Aricidea lopezi Berkeley and Berkeley is known only 

 from Lopez Island, Washington, in 21.6 meters, in mud. 



Aricidea suecica Eliason, 1920 



Aricidea suecica Eliason, 1920, pp. 52-55, figs. 14, 15. 

 Aricidea heteroseta Hartman, 1948a, pp. 33-36, fig. 9. 



According to the original account, total length is 8 to 14 mm, width 

 is 0.4 to 0.5 mm. The prostomium is cordate and has a short clavate 

 median antenna and a pair of eyespots. The first 3 segments have no 

 branchiae; they have small postsetal lobes and minute neuropodial post- 

 setal lobes (or ventral cirri). Branchiae are present from the fourth 

 segment and are continued on 10 to 15 or 19 to 24 segments, with the 

 higher number on larger specimens. The notopodial postsetal lobe is 

 more conspicuous in branchial than in prebranchial segments and has a 

 basal enlargement; there are no visible postsetal lobes in neuropodia. 

 Parapodia in anterior and branchial segments have only slender, distally 

 pointed setae. Postbranchial neuropodia have curved acicular setae with 

 a distal arista. Farther back the distal arista is absent and the setae are 

 curved in their distal part. 



