FAMILY MAGELONIDAE 

 Key to species of Magelona 



1 Setiger 9 with specialized setae having a subterminal expan- 



sion [Prostomium spatulate and smoothly curved anteriorly. 



Hooded hooks with a pair of denticles above main fang] M. papillicornis 



1' Setiger 9 without specialized setae 2 



2 Prostomium with anterolateral angles or "horns" 3 



2' Prostomium smoothly curved in front. [Hooded hooks with 



a pair of denticles above main fang. Parapodia of anterior 



region with a small lobe medial to notosetae] M. ro.^ea 



3 Hooded hooks with a single denticle above main fang. Noto- 



podia of anterior region without a small lobe medial to 



notosetae iM. jjinjilisde 



3' Hooded hook.s with a pair of denticles above main fang. Noto- 

 podia of anterior region with a small lobe medial to noto- 

 setae M. sp. 



Magelona papillicornis Miiller, 1858 



Ma(jelo)ni papiUicin-His. - Fauvel, 1927: 64, 

 Fig. 22 a-h. - Day, 1967: 495, Fig. 19.1. 

 a-d. -Jones, 1963: 23 (key only). 

 Magclo)ia rosea. - Wells and Gray, 1964: 73 

 {ii()» M. rosea Moore. 1907). 

 Magelona sp. - Jones, 1968: 272, Fig. 1-33. 



[?1 

 [?1 



Description. — Body white, seldom more than 

 50 mm long in North Carolina, up to 170 mm 

 in Europe. Prostomium (Figure Ilk) spatulate 

 with anterior margin smoothly rounded. Palps 

 with four rows of adhesive papillae. Body clearly 

 divided; anterior region with nine setigers and 

 posterior region with numerous setigers. Noto- 

 podia of setigers 1-8 (Figure 111) with a small 

 papilla medial to notosetae and a tongue-shaped 

 postsetal lamella; neuropodia with a similar 

 but smaller postsetal lamella. Setiger 9 without 

 medial papillae but with small presetal as well 

 as postsetal lamellae in both rami. Abdominal 

 parapodia (?''igure 11m) with medial papillae 

 both dorsally and ventrally and equal, oval 

 notopodial and neuropodial lamellae curving 

 towards one another. Lateral membranous 

 pockets between one parapodium and the next. 

 Setigers 1-8 with long bilimbate capillaries; 



setiger 9 with fans of specialized setae bearing 

 spatulate blades ending in mucronated tips 

 (Figure lln). Abdominal setae as .short hooded 

 hooks, bidentate in profile but actually with a 

 pair of denticles above the main fang. (Figure 

 llo, p). 



Reniai'ks. — Dr. Jones informs me that M. 

 papillicoi'iiis is probably the same as Magelona 

 sp. Jones (1968) from Woods Hole: M. riojai 

 Jones is very close but, according to Jones, 

 there are differences in the shai)e of the pro- 

 stomium and in the setae of the 9th foot. 



R(eiii-(ls. — Pamlico Sound, intertidal and 

 abundant off Beautnrt in 3-10 m (19, 21, ■■'). 



Distribution. — Atlantic tV(im Scotland to 

 South Africa and Brazil: '.' Massachusetts; 

 North Carolina: Mediterranean; Madagascar; 

 intertidal to 100 ni. 



Magelona phyllisae Jones. 1963 



Fitnirt- 1 Iq-v 



Magelona phgllisae Jones. 1963: 2, Fig. 1-11. 



Description. — Body colorless, up to 20 mm 

 long. Prostomium (Figure llq) flattened, not 

 much broader than body and anterolateral 

 angles or "horns" well marked. Palps long. 



77 



