NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 157 



1283-41 (1); 1288-41 (4); 1289-41 (4); 1295-41 (1); 1301-41 (2) ; 

 1304-41 (1); 1316-41 (4); 1318-41 (4); 1321-41 (4); 1326-41 (1); 

 1333-41 (1); 1356-41 (1). 



The prostomium is usually shorter than long, more or less acutely 

 pointed in front, or depressed conical. Preserved individuals are usually 

 entirely pale, sometimes almost white; there are no eyespots. Simple, 

 hooded hooks are absent from the first few segments, but may be present 

 already from the fourth (coll. 1191-40) or not until the twenty-third 

 segment (coll. 1028-39) or a little later (pi. 9, fig. 210) ; they are no- 

 where conspicuous when first present because they are typically slender 

 and few in number, but usually increase in number posteriorly and are 

 gradually replaced by heavier, shorter hooded hooks, as typical of pos- 

 terior segments. Acicula are dark to black (in coll. 1028-39 and 1191-40 

 they are dusky to dark along part of their length but clear at the tip and 

 base). Acicula number 5 to 6 in parapodia in anterior segments, are 

 acutely pointed, with long drawn-out, pale tips that project from the 

 parapodial lobe, but usually diminish to about 3 in posterior parapodia, 

 where they are blunt and do not project from the parapodial lobe. 



Parapodia are at first short, truncate, the presetal and postsetal parts 

 nearly equaling one another in length; the postsetal part soon elongates 

 but is still truncate (pi. 9, fig. 210) ; it continues thus through a long 

 median region. In a postmedian region, sometimes not before the one 

 hundred-tenth segment, both lobes elongate and come to be more or less 

 equally bilabiate (pi. 9, figs. 209, 208). Setae are at first entirely simple 

 limbate, accompanied by one to a few simple hooks from about parapodia 

 4 to 23 (usually about 5 to 9). Limbate setae are continued through a 

 long median region ; they are more or less completely absent by about the 

 eighty-sixth setiger and are gradually replaced by the thicker, simple, 

 hooded hooks (pi. 9, fig. 212) ; in the posterior, bilabiate region hooks 

 alone are present, or occasionally a slender limbate seta is found even far 

 back. 



The maxillary carriers are longer than broad, basally blunt (pi. 9, 

 fig. 207) ; the forceps (maxilla I) are falcate; maxilla II has 5 teeth on 

 either side, but the basal tooth is sometimes so blunt as to appear absent, 

 or is present only as a slight boss; maxillae III and IV have each a single 

 tooth (pi. 9, fig. 207). The mandibles are broad, flare distally, and have 

 slender basal ends (pi. 9, fig. 211). 



In many respects L. bicirrata comes very near to L. bifurcata (Mc- 

 intosh) (1885, p. 241) from south Japan, in 345 fms, except that in the 

 latter the second maxillary plate has 6 teeth on either side and the pros- 



