184 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 10 



valid, since it was originally based on an error, even though its type, O. 

 lucida Savigny, has been shown conclusively to be the same as A. fulgida. 

 In the first account of Oenone, the presence of 3 prostomial antennae had 

 been overlooked. Okuda (1937, p. 289) follows this revision. Although 

 the laws of priority might dictate the use of the older name, Oenone 

 (next in age to Aglaura Savigny, which has been shown to be preoccu- 

 pied by Ehlers, 1868), the most lucid revision (Fauvel, 1917) has pre- 

 ferred the use of A glaurides ; the latter is therefore used below. 



Other genera that have been referred to the Lysaretidae but which 

 have come to be regarded as synonyms include Andromache Kinberg, a 

 synonym of A glaurides Ehlers (Ehlers, 1868, p. 407), Cirrobranchia 

 Ehlers (1868, p. 408), a synonym of Halla Costa (Fauvel, 1923, p. 

 426), and Danymene Kinberg (1865, p. 571), perhaps the same as 

 Aglaurides (Chamberlin, 1919, p. 326). Larymna Kinberg (1865, p. 49) 

 from Mossambique is an indeterminable lysaretid, since its dorsal cirri 

 are also long, foliaceous, and maxillae are much as in Aglaurides, as I 

 was able to confirm by examination of the fragmentaiy type in the 

 Swedish State Museum. 



The following 4 genera are herein considered to be valid. 



1. Aglaurides Ehlers, with type A. fulgida (Savigny) (Fauvel, 1917, 

 pp. 240-254). 



2. Halla Costa, with type H. partJienopeia (delle Chiaje) (Fauvel, 

 1923, p. 426). 



3. Iphitime Marenzeller, with type /. doderleini Marenzeller (1902, 

 p. 579). 



4. Lysarete Kinberg, with type L. brasiliensis Kinberg (Ehlers, 1887, 

 p. 107). 



Key TO Genera of Lysaretidae 



1. With 2 anterior, apodous segments 2 



1. With a single, anterior, apodous segment . Aglaurides, p. 185 



2. Parasitic; maxillary parts reduced to simple fangs 



Iphitime Marenzeller 



2. Free living; maxillary parts dentate 3 



3. Maxillaiy carriers greatly prolonged basally; maxillary plate 

 I with numerous well-defined teeth .... Halla Costa 



3. Maxillary carriers considerably shorter; maxillary plate I with 

 a single heavy fang distally and a few weakly developed teeth 

 below Lysarete Kinberg 



