122 PROCEEDIXGS OF THE NATIONAL MUSEUM vol.86 



Genus MALMGRENIA Mcintosh 



MALMGRENIA NESIOTES (Chamberlin), new combination 



PoJynoe nesiotes Chamberlin, 1919a, p. 72 (U.S.N.M. no. li>160. Lower California). 



The type has the following characters, which agree with the genus 

 Malmgi'enia: Lateral antennae are inserted terminally and they are 

 smaller than the median antenna; there are 15 pairs of scales, covering 

 the dorsum ; there are only 34 segments, but the type is in two pieces, 

 and may be incomplete in the midregion. Chamberlin's description 

 is as complete as is possible with the material. 



Genus MACELLICEPHALA Mcintosh 



MACELLICEPHALA REMIGATA (Moore), new combination 



Polynoe (?) rcmigata Mooee, 1910, p. 365 (U.S.N.M. no. 17220, California). 



Tills species, like the one following, consists of 18 setigerous seg- 

 ments. The prostomium consists of a pair of subglobular lobes, the 

 posterior margin more or less flattened, the dorsoanterior margins 

 each with a minute, papillar, prostomial peak. Lateral antennae are 

 probably absent. Moore (1910, p. 365) mentions the swellings just 

 ventral to the prostomial peaks and says that they "probably repre- 

 sent the bases of the lateral tentacles." They seem, more likely, how- 

 ever, to be fleshy swellings which never had attached antennae. 



Neuropodial setae are serrated along one margin only, as in M. mira- 

 hilis Mcintosh. It is likely that M. remigata and M. inirahilU are 

 identical. The latter has been widely reported (New Zealand, north 

 Atlantic, south Pacific, Hawaiian Islands, etc.). M. reinigata was 

 dredged off Santa Catalina Island. 



MACELLICEPHALA (T) ACICULATA (Moore), new combination 



Figure 39, f 



PoJynoe (?) aciculata Moobb, 1910, p. 367 (U.S.N.M. no. 17405, California). 



The single type specimen is considerably macerated. It consists of 

 18 setigerous segments; the prostomium is strongly bilobed, with a 

 pronounced median fissure. Eyes are lackmg, and no trace of lateral 

 antennae can be made out. The notopodium is gi'eatly reduced and 

 the few small dorsal setae are smooth. Neuropodial setae are long, 

 flattened, transparent, and serrated along two sides (fig. 39, /). 



