134 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



both pale and dark-colored aci'cula are present in the same parapodium, 

 or in different parapodia of the same individual. The notopodium may be 

 represented merely by a slender, notoacicular fascicle in the fleshy part 

 of the parapodium, or there may also be a minute, papillar, dorsal cirrus. 



Setae consist, anteriorly, of ( 1 ) simple bilimbate, or also (2) simple 

 hooded hooks, or (3) composite hooded hooks, or rarely (4) composite 

 limbate setae. In median and posterior regions the limbate setae are 

 usually more or less completely replaced by simple hooded hooks. 



Four genera, of which Luinbrineris Blainville (=Lumbriconereis 

 Grube) is by far the largest, are herein assigned to this family. They 

 include (see also discussion under Arabellidae, p. 170) : 



1. Lu??ibrineris Blainville, with type L. fragilis (O. F. Miiller), 

 p. 136. 



2. Ninoe Kinberg, with type N. chilensis Kinberg, p. 169. 



3. Cenogcnus Chamberlin (1919), with type C. descendens Chamber- 

 lin. 



4. Augeneria Monro (1930), with type A. tentaculata Monro. 



The first 2 are represented in the collections; the last 2 genera are 

 each known through only a single species, not present in the materials. 



Key to Genera of Lumbrineridae 



1. With 3 small antennae at posterior margin of prostomium 

 Augeneria Monro 



1. Without 3 small antennae 2 



2. With palmately branched branchiae on some segments . . . 

 Ninoe, p. 169 



2. Without palmately branched branchiae 3 



3. Maxillary plates with dentations . . . Liimbrineris, p. 136 

 3. Maxillary plates (except maxilla II) without dentations . . 



Cenogenus Chamberlin 



In addition, an interesting foiTn, Aotearia sulcaticeps Benham, has 

 been described from New Zealand, for which the subfamily, Aotearinae 

 Benham, and genus, Aotearia Benham ( 1927, p. 91 ), were erected, based 

 on 2 anterior ends of a single species. The genus is strikingly like Lum- 

 brineris in form and details except that maxilla IV is present as an un- 

 paired right plate with 3 teeth and maxilla V has numerous teeth on 

 either side. The occurrence of an unpaired maxillary plate at once ex- 

 cludes this from the family Lumbrineridae, as herein defined. Further- 

 more, it should be stressed that where an unpaired plate is present in rep- 



