104 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



9. Prostomial antennae with articles more or less moniliform . 10 



10. Branchiae first present from setigers 3 to 7, increasing to 11 

 filaments in an anterior region, decreasing thereafter to one or 

 2 filaments at about setiger 30, and again increasing on segments 

 of the posterior fourth E. antennataj p. 115 



10. Branchiae first present from setiger 5 or 6, the number of fila- 

 ments not increasing in a posterior region . . E. rubra, p. \17 



Eunice longicirrata Webster 

 Plate 6, Figs. 118-122 



Webster, 1884, pp. 318-319, pi. 12, figs. 75-80. 



Leodice longicirrata Treadwell, 1921, pp. 1 1-14, pi. 1, figs. 1-4, figs. 3-12. 



E. biannulata Moore, 1904, pp. 487-490, pi. 37, figs. 10-18. 



Collections.— W-ZA (1); 245-34 (1); 248-34 (1); 277-34 (4); 

 429-35 (1) ; 498-36 (1) ; 513-36 (2) ; 533-36 (4) ; 549-36 (2) ; 628-37 

 (1) ; 633-37 (2) ; 642-37 (1) ; 675-37 (2) ; 704-37 (1) ; 745-37 (4) ; 

 747-37 (6) ; 1210-40 (1) ; Ensenada, Lower California, Nov. 25, 1927 

 (2) ; El Morro Point, Todos Santos Island, Lower California, shore 

 (1) ; Mission Bay, California, shore (1) ; A 4-39 (2) ; A 13-39 (2) ; 

 A 44-39 (1). 



After considerable hesitation and comparison of the numerous speci- 

 mens listed, I have referred E. biannulata Moore, first described from 

 California, to the older species, E. longicirrata Webster. This species may 

 be characterized thus. The prostomial antennae are articulate to some- 

 what moniliform and greatly surpass the prostomium in length. Bran- 

 chiae are present from the third setiger through the anterior third region, 

 at first with a small filament much smaller than its greatly elongate, arti- 

 cled, dorsal cirrus, then increasing rapidly to 6-8 or 12-15 filaments 

 where best developed between setigers 20 and 30, and absent from the 

 posterior half to two thirds of the body. A tenth parapodium is shown in 

 pi. 6, fig. 118. Acicula and subacicular hooks are yellow. Acicula occur 

 one to 3 (usually 2) in parapodia; those in more anterior segments pro- 

 ject from parapodia and are distally somewhat spatulate; farther back 

 they taper slightly, have a blunt tip, and are usually a little bent. Sub- 

 acicular hooks are present from about setigers 30 to 40, and are con- 

 tinued to the end. They occur singly or by twos in the later branchial 

 parapodia and usually 2 in a fascicle thereafter. They are distally biden- 

 tate, hooded (pi. 6, figs. 119, 121). Composite setae (pi. 6, fig. 122) 

 are distally bidentate, the accessory tooth fairly large and more or less at 

 right angles to the main stem. The maxillary formula is approximately as 

 follows : maxilla I is falcate on either side, maxilla II has 5 to 7 left and 



