TYPES OF POLYCHAETE WORMS HARTMAN" 113 



cal parapodium (20th) has 60 or more neuropodial setae and only 20 

 or less notopodial setae. The prostomium is unique in that it is broadly 

 subquadrate and the lateral antennae are inserted ventrolaterally (see 

 Tread well, 1926, fig. 9). There is a nuchal hood extending forward 

 from the peristomium, 



Neuropodial setae are long, slender, with distal bladelike portion 

 not much wider than the stem (fig. 36, 5) ; terminal end is bifid. The 

 accessory tooth is largest in inferiormost setae (fig. 36, &), hardly 

 visible in the superiormost setae (fig. 36, c). Transverse rows of 

 pectinae are numerous on the cutting edge but exceedingly fine ; these 

 are accompanied with a few heavier teeth on median and ventral 

 bristles; the opposite edge or back, has a row of teeth (fig. 36, b). 

 Notopodial setae include a few straight, smooth, acicular rods and 

 more nmnerous straight setae resembling the superiormost neuro- 

 podial setae but apparently entire at the tip, and with fainter rows 

 of pectinae. 



Genus HYPERHALOSYDNA Augener 



HYPERHALOSYDNA STRIATA (Kinberg) 



Lepidofiotus striatus Kinberg, 1855, p. 384 (Australia). 

 Polynoe platycirrus McIntosh, 1885, p. Ill (Australia). 

 Hylostjvda carinata Moore, 1903, p. 417 (U.S.N.ai. no. 15732; "off Japan"). 



This species has been well described by Moore and by Augener 

 (1922, p. 4; 1927, p. 105). It is present in the tropical and subtropi- 

 cal Pacific. 



Genus LEPIDASTHENIA Malmgren 



LEPIDASTHENIA LUCIDA (Treadwell), new combination 



I'iGUEE 37 a-c 



Polyiwe lucida Treadwell, 1906, p. 1150 (U.S.N.M. no. 5202; off Hawaiian 

 Islands). 



The type is a fragment consisting of the head and 64 setigerous 

 segments; a posterior portion is missing. Lateral antennae are in- 

 serted terminally. The notopodia are greatly reduced (fig. 37, a), 

 without setae but with a slender aciculum. Neuropodia are elongate, 

 deepest subterminally, with presetal and postsetal lobes broadly tri- 

 angular and about equally long (fig. 37, a). 



Neuropodial setae are of two kinds: A few very slender, superior 

 setae (fig. 37, c) and a fan -shaped fascicle of numerous thicker setae 

 (fig. 37, h). Peristomium has a nuchal hood that extends forward 

 over the prostomium, its enterior margin in line with the anterior 

 margin of the posterior pair of eyes. 



