130 EUNICE. 



There are genera in which these organs are more developed, so as to 

 form a sort of spiral tuft ; and again there are species to which 

 no branchiae have been awarded. The feet are uniramous and fur- 

 nished with spines, with one or several brushes of bristles, and with 

 two cirri, of which the superior is the greater. The first two rings 

 are, in general, apodous ; and the place of feet is supplied by tenta- 

 cular cirri. 



Synopsis of Genera. 



* Feet with branchice. 



7. Eunice. Body linear- elongate : head distinct, with five antennae : 



jaws seven : feet homologous : branchiae semipectinate, fixed 

 above the dorsal cirrus along a more or less considerable extent 

 of the sides* : anal segment with two tentacular styles. 



8. Northia. Body linear-elongate : head small and pointed, with 



two short conoid antennae, and five tentacula : mouth with two 

 pairs of thick fleshy palpi : jaws seven : branchiae as in Eunice-f. 



** Abranchial. 

 t Antennae developed. 



9. Lycidice. Body linear-elongate, composed of numerous short 



segments : head distinct, exposed, broader than long, wdth 

 three small antennae behind, shorter than the head, approximate 

 at the base : eyes at the base of the external antennae : tenta- 

 cula none, nor tentacular cirri : mouth with seven jaws, and an 

 under-lip formed of two horny pieces : feet uniramous, with two 

 fascicles of bristles : bristles of two kinds, simple, setose and 

 compound, with a short beak-like piece : anal segment with 

 four styles. 



tt Antennae none or rudimentary. 



10. Lumbrineris. Body elongate, cylindrical : head distinct, naked, 

 mammillate, without antennae, or with rudimentary tubercle- 

 like antennae : eyes none : mouth with eight jaws in opposed 

 pairs, and supported on a double stalk : feet uniramous, or with 

 a single brush of bristles; the cirri short and thick. 



* " Arranged in a prominent row of bright vessels, standing erect as florid 

 visible combs at the dorsal base of each foot in the body, the branchiae impart to 

 all the species of this genus a graceful and characteristic appearance." — Dr. 

 Williams. 



t See Oersted's char, in Groenl. Annul. Dorsibr. 19; and in Krover's Naturh. 

 Tids. 113 (1842). 



