EUNICIML 



347 



scalp riform ; apex truncate and pectiniform. Inferior setae or spines posteriorly uncinate. 

 Some make tubes — hyaline, or with fragments of shells, stones, and sea-weeds. 



He divided them into three main groups, viz., (1) the Labidognatha, with unequal 

 pieces in the jaw-apparatus : (2) the Lumbriconereidea, which he again subdivided into 

 those with leaf -like dorsal cirri, and those without dorsal cirri ; and (3) the Stauvo- 

 cephalidea. 



Grube l subdivides Eunice as follows : 



m t . . . f Frontal border 4-lobed . . S.-ff. Eriphyle, Kbg. 



Two tentacular cirri . fe ** % 



[ „ „ 2-lobed . . b.-g. Leodice, s.st. (xr. 



No tentacular cirri . ,, ,, 2-lobed or entire . S.-g. Marphysa, Sav. 



In the same paper he subdivides the sub-genus Leodice (1) according to the presence 

 of the branchiae in the middle region of the body and their absence posteriorly, and 

 (2) those species in which the branchiae are continued to the end of the body or nearly 

 so. He adopts the same arrangement with Marphysa. He appends Lysidice, Amphiro, 

 and Nematonereis without special heading, distinguishing Lysidice according to the 

 position of the median tentacle. 



The Eunicidae form the first family of Levinsen's Euniciformia vera, the first division 

 of his Euniciformia (1883). Benham makes it the ninth family of his Nereidiformia. 

 Both link on the Glycericlas, the former as a division, and the latter as merely the 

 succeeding family of the sub-order. 



Pruvot (1885) considered the appendages on the second segment of the body in 

 certain forms as homologous with the dorsal cirri. He gave a careful description of the 

 nervous system of several types of the group. 



The nuchal organs are in the form of ciliated grooves, and may be protected by the 

 border of the first segment (Racovitza). 



Ehlers, in his ' Florida-Anneliden ' (p. 67), groups the tentacle-bearing Euniciclaa as 

 follows : — 



No. of 



Without tentacular cirri. 



With tentacular cirri. 



tentacles. 



Without branchiae. 



With branchiae. 



Without branchiae. With branchiae. 



7 



Onuphis 

 (Paronuphis) 



Onuphis 



Diopatra 

 (Paradiopatra) 



Heptaceras 



Rhamphobrachium 



Diopatra 



5 



Paramarphysa 



Marphysa 



Nikidion 



Eunice 



o 



O 



Lysidice 



Amphiro 



— 



— 



1 



Nematonereis 



— 



— 



■ — ■ 



1 ' Jahresber. der schl. Gresellsch. fur vaterl. Cultur/ 1877, t. lv, p. 98. 



