NEPHTYS. ANNELIDES. 139 



Gen. 13. NEPHTYS, Lam. 



Proboscis narrowed at its base, of two segments ; the lower one 

 long, claviform, and rough at its summit, with small pointed 

 tentacula, the upper very short, open longitudinally, and the 

 orifice furnished with two rows of tentacula ; jaws small, 

 horny, bent and pointed ; antennae small, with two joints, and 

 no odd one ; eyes indistinct. 



N. Hombergii, Sav. Body tetraedral, furrowed above; bristles 

 long, yellow, and fine ; spines black ; a brilliant longitudinal band 

 under the belly. Inhabits coasts of France Lam. v. 314. 



Gen. 14. LYCORIS, Lam. 



Proboscis thick at the base, divided into two joints, with pro- 

 jecting and hard points, but no tentacula at the orifice ; two 

 horny dentated projecting jaws ; exterior antennae largest and 

 thickest, and no odd one ; tentacular cirri in place of the first 

 two pairs of pediform papillae. 



L. lobulata, Suv. Body pale-grayish, with the jaws and spines 

 black. Inhabits coasts of Italy Lam. v. 312. 



L. Margaritacea, Sav. (Nereis, Leach.) Body pearly, terminated 

 by two long setae ; tentacula eight ; head trilobate ; exterior 

 lobes with their points attenuated and slightly knobbed ; middle 

 lobe with two small incurved processes. Inhabits British seas. 

 Sup. Ency. Brit. i. pi. 26. 



FAMILY IV. APHRODITE. 



Upper branchiae and cirri alternating in their position to the 



twenty -third or twenty-fifth pair of pediform papillae ; four 



jaws. 



Gen. 15. POLYNOE, Lam. 

 Tentacula simple, conical, crowning the orifice of the proboscis ; 



jaws horny ; five antennae, the odd one sometimes wanting ; 



four eyes ; dorsal scales. 



The body in this genus is of various forms, oval, elongated, or almost linear ; the 

 head depressed, slightly convex above, and carinated below and before the mouth. 



* No elongated cirri orjilaments near the anus, and no odd antenna. 



P. muricata, Sav. Body oval, depressed, with dorsal, fuscous, reti- 

 culated scales and blackish longitudinal line. Inhabits Indian 

 seas Lam. v. 309. 



** Trvojllaments near the anus; 'the odd antenna distinct. 

 P. squamata, Sav. (Aphrodita, Pall.) Body oblong, linear, de- 

 pressed, the extremities obtuse ; twelve similar dorsal scales, not 

 imbricated. Inhabits seas of Europe. Lam. v. 309. 



Gen. 16. HALITHEA, Lam. 



Tentacula divided, subramose, crowning the orifice of the pro- 

 boscis and tufted ; jaws cartilaginous, scarcely visible ; odd 



