NO. 1 HARTMAN ; POLYCHAETOUS ANNELIDS 145 



13. Posterior parapodial lobes not prolonged 17 



14. Acicula black ; larger L. californiensis, p. 163 



14. Acicula yellow; smaller L. cruzensis, p. 165 



15. Acicula black L. index, p. 162 



15. Acicula yellow 16 



16. Maxillae III and IV each with several teeth L. inflata, p. 160 



16. Maxillae III and IV each with a single tooth 

 L. limicola, p. 161 



17. Acicula yellow L. latreilli, p. 158 



17. Acicula dark , 18 



18. Maxillae III bidentate; carriers broad at base 

 L. latreilli japonicUj p. 159 



18. Maxillae III unidentate; carriers taper to points 



L. pallidaj p. 166 



Lumbrineris acuta (Verrill) 

 Plate 8, Figs. 176, 177 



Lumbriconereis acuta Verrill, 1875, p. 39, pi. 3, fig. 5. 

 Lumbrinereis acuta Verrill, 1882, p. 314. 

 Hartman, 1942, p. 114, fig. 10. 



Collections.— \2S\A\ (1); 1288-41 (1); 1441-41 (1). 



Two small, pale, incomplete specimens are in the collections. One 

 anterior fragment of 50 segments measures only 14 mm long. The body 

 segments are % to % as long as broad, distinctly annulate, and appear 

 nearly moniliform. Parapodia are nowhere conspicuous, but the post- 

 setal lobe is longer than the presetal one; the latter are short, cushion- 

 like. Acicula are pale yellow. 



Most characteristic features are (1) the greatly prolonged prosto- 

 mium, which tapers anteriorly to a blunt point and is only slightly de- 

 pressed, and (2) the proboscidial parts with their massive carriers. The 

 latter differ slightly from those of Atlantic representatives. The maxil- 

 lary carriers are similarly very large but laterally incised in those from 

 the Pacific (records listed above) ; the forceps have 2 (instead of one) 

 blunt teeth on the cutting edge, but the other plates have each only a 

 single, large tooth (pi. 8, fig, 177). The mandibles are nearly as long 

 as the maxillary pieces together, have slender basal portions fused along 

 their entire length, and the distal end is broad, flaring (pi. 8, fig. 176). 

 Anterior limbate setae have a broad, winged area with a short, pointed 

 tip ; there are no composite setae or hooks. 



Insofar as I am aware, this species has been recorded, heretofore, only 

 from New England, and was only briefly described at that time. The 

 specimens from the eastern Pacific are referred to it largely because of 



