4 Anterior dorsum with prey segmental bars. [A few short, 



geniculate, postacicular setae with coarse teeth at base of 



blade] N. (N.) picta 



4' Dorsum uniformly pale 5 



5 Bases of parapodia with scalelike lamellae covering inter- 



segmental junctions both dorsally and ventrally N. (N.) squamosa 



5' Bases of parapodia without scales 6 



6 A red spot in middle of prostomium. Shorter postacicular 



setae with denticles at base of blade A'. (N.) biiccra 



6' No red spot on prostomium. Postacicular setae without denti- 

 cles at base of blade A'. (N.) iiicisa 



Nephtys (Inermonephtys) inermis 

 Ehlers. 1887 



NcpJithjix (Af/laopliannis) iiicri)iis Ehlers, 1887: 



125, pi. 38: Fig. 1-6. 

 Nephthys i)ier)>ns. - Fauvel, 1928: 375, Fig. 



147. - Hartman, 1940: 234, pi. 39: Fig. 



84-86; pi. 40: Fig. 95. 

 l7ierni(iiH'plit!/s iiienm's. - Fauchald, 1968: 16, 



pi. 4: Fig. 31-35. 



Description. — Body up to 50 mm long. Pro- 

 stomium bluntly rectangular in front with a 

 posterior prolongation. Two pairs of antennae 

 but neither pair obvious; anterior pair bent 

 down below margins of prostomium, posterior 

 pair on sides of nuchal grooves at level of sub- 

 dermal eyes. Proboscis very long and muscular 

 but without i)apillae. Jaws as lightly chitinized 

 ridges far back. First setiger small, bearing a 

 digitiform dorsal ciriiis, a rounded postsetal 

 lamella on notopodium. and a ventral cirrus 

 similar to dorsal one. Second setiger similar 

 but larger. Third setiger with first branchia 

 originating from base of dorsal cirrus. Para- 

 podia fully (U'veloped at 10th segment. Noto- 

 podium formed by a blunt setigerous lobe bear- 

 ing a rudimentary presetal lamella, a large 

 dorsolateral postsetal lamella and lielow this, 

 a very long dorsal cirrus and an involute bran- 

 chia. Neuropodium formed of a bluntly conical 

 setigerous lobe bearing a rudimentary i)resetal 

 lamella, an even smaller i)ostsetal lamella, and 

 a long, .stout, and tapering ventrolateral cirrus. 

 Preacicular setae rather long luit faintly barred; 



postacicular setae mainly with slender blades 

 minutely serrated but also a few forked setae. 



K( Diarks. — Fauchald has erected a new genus 

 Iiier))io)ieplitj/s with N. iiie)'»iis as the type 

 species. The genus is distinguished by the lack 

 of proboscideal papillae, the character of the 

 jaws and a different interpretation of the pro- 

 stomial appendages. He regards the first pair 

 of antennae as missing, the second pair as ven- 

 tral and states that: "The nuchal organs are 

 very well developed and each is equipped with 

 one long, digitiform eversible process." His 

 Figure 34 shows these digitiform processes as 

 separate from the prostomium, whereas my 

 specimens show that they arise from the mar- 

 gins of the prostium, close to the subdermal 

 eyes. For this reason I regard these processes 

 as the second pair of antennae, further back 

 than usual, but nonetheless homologous with 

 the second pair of antennae of other nephtyids. 

 Iiicrnioiicpliti/s is obviously related to Agla- 

 (iplnimi/s and both are here regarded as sub- 

 genera of S'( ph ti/s. 



Records.— Off Beaufort in 160-450 m (*). 



Distribution. — Florida and tropical Atlantic; 

 Pacific; Mediterranean; 0-450 m. 



I\'ephfys (.Aglaophamiis) lerrilli 

 Mcintosh, 188.') 



Xi'phtlnis vpyrilli Mcintosh. 1885: 163. pi. 26: 



Fig. 6, 7; pl.32A: Fig. 8. 

 Af/laophnnnis dicirris Hartman, 1945: 22; 



1950; 122, pi. 18, Fig. 1-8. 



42 



