NO. 1 HARTMAN : POLYCHAETOUS ANNELIDS 147 



been possible to separate these two on purely morphological grounds. In 

 both, the setal and proboscidial formulas are practically identical, allow- 

 ing for individual variation, and parapodial parts are apparently identi- 

 cal. Both are sometimes heavily infested with several species of gregarines 

 in the alimentary tract. 



L. zonata agrees reasonably well with descriptions of L. brevicirra 

 (Schmarda) first described from New South Wales, as interpreted by 

 Crossland (1924, pp. 44-50) and Monro (1933, pp. 83-84, in part), 

 also with L. impatiens Claparede from southern Europe (Fauvel, 1923, 

 p. 429), but a comparison of specimens from these widely scattered lo- 

 calities might disclose interesting differences. I am retaining Johnson's 

 name, L. zonata, to include a population inhabiting the intertidal or lit- 

 toral zones of the northeast Pacific. 



Distribution. — Northeast Pacific; Puget Sound, south to Lower Cali- 

 fornia; common in intertidal zones; greatest depth, based on the collec- 

 tions, is 35-46 fms. 



Lumbrineris tetraura (Schmarda) 

 Plate 8, Figs. 175, 190, 191 ; Plate 9, Figs. 192-195 



Notocirrus tetraurus Schmarda, 1861, p. 117, 6 figs. 



Lumbriconereis tetraura Ehlers, 1901, pp. 137-139, pi. 17, figs. 1-5, 8-10 



(in part). 

 Moore, 1911, p. 291 ; Augener, 1933, pp. 61-62. 

 L. brevicirra Monro, 1933, p. 83 (in part). 



Collections.— 2A1-2,A (1); 375-35 (1); 379-35 (1); 384-35 (1); 

 473-35 (1) ; 638-37 (2) ; 820-38 (2) ; 823-38 (1) ; 833-38 (1) ; 834-38 

 (1); 835-38 (6) ; 843-38 (1); 1045-40 (3); 1076-40 (1). 



The prostomium is pale (preserved), short, about as wide as long, 

 blunt, depressed conical (pi. 8, fig. 175), much as in L. bifilaris (Ehlers), 

 but much less acute. Parapodia are conspicuous throughout, even from 

 the first, where they have a broad, postsetal lobe and spreading setal 

 fascicles. Simple, slender, hooded hooks are present from the first. A 

 fifth parapodium is provided with 7 to 10 hooks in addition to superior 

 and inferior bilimbate setae, and 2 (or 3) acicula. The presetal lobe is a 

 short, compressed pad. The postsetal lobe from the first is a broad, ob- 

 lique, auricular lobe, directed outward (pi. 9, figs. 193, 194) ; this form 

 is maintained through about 20 segments; after that it elongates and is 

 more slender, erect (pi. 9, fig. 195). The parapodial base comes to elon- 

 gate in a similar way farther back, but it is directed laterally. 



