NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 143 



III. Posterior parapodia with comparatively short lobes. 



a. Acicula yellow: acuta, brevicirra, impatiens, simplex, 



zonata. 



b. Acicula black: no representatives in the collections. 

 B. With composite hooks in some anterior parapodia. 



I. Posterior parapodia bilabiate. 



a. Acicula yellow: cruzensis. 



b. Acicula black: californiensis. 



II. Posterior parapodia with long, postsetal lobe. 



a. Acicula yellow: inflataj litnicola. 



b. Acicula black : index. 



III. Posterior parapodia with short lobes. 



a. Acicula yellow : latreilli. 



b. Acicula black : latreilli japonica, pallida. 



JCey to Species of Lumbrineris 



A. Parapodia without composite hooks or setae 1 



B. Parapodia with composite hooks or also setae in some segments 13 

 1. Prostomium greatly prolonged, slender; maxillary carriers 



proportionately massive, each forceps with 2 or 3 widely 

 spaced teeth (pi. 8, fig. 177) L. acuta, p. 145 



1. Prostomium not so; maxillary carriers and forceps otherwise 2 



2. Setae greatly prolonged, very slender, project far out from 

 sides of body; abyssal L. moorei Hartman 



2. Setae not greatly prolonged 3 



3. Posterior parapodial lobes distinctly bilabiate 4 



3. Posterior parapodial lobes distinctly unilabiate, the postsetal 



lobe prolonged 7 



3. Posterior parapodial lobes not noticeably prolonged in a pos- 

 terior region, both postsetal and presetal lobes not much differ- 

 ent from those in anterior segments 9 



4. Acicula yellow 5 



4. Acicula dark or black; maxillary formula 5-5, 1-1, 1-1 ; hood- 

 ed hooks present from first parapodia or a little later . 

 L. bicirrata, p. 156 



5. Presetal lobe in far posterior segments longer than postsetal 

 lobe ; carriers of maxillae proportionately massive ; small, slen- 

 der, resembles a drilonereid .... L. minima, p. 155 



5. Presetal lobe not longer than postsetal lobe in any segments; 



larger, not resembling a drilonereid 6 



