(ENONE. ANNELIDES. 137 



Gen. 4. CENONE, Lam. 



With nine jaws, four on the right side and five on the left, the 

 lower ones strongly dentated ; no projecting antennae ; head 

 concealed under the first segment, which is large and round- 

 ed before ; eyes indistinct. 



(E. lucida, Sav. Body long, linear, slightly inflated towards the 

 head, formed of 142 segments, and of a bright cinereous blue co- 

 lour. Inhabits coasts of the Red sea Lam. v. 326. 



Gen. 5. AGLAURA, Sav. 



With nine jaws, four on the right side and five on the left, the 

 lower ones strongly dentated ; three short antennae ; head 

 concealed under the first segment, with the forehead bilobed ; 

 eyes indistinct ; no tentacular cirri. 



A.fulgida, Sav. Body very long, convex, composed of 253 seg- 

 ments, and of a bluish cinereous colour with opaque reflections. 

 Inhabits coasts of the Red Sea Lam. v. 326. 



Gen. 6. LYSIDICE, Lam. 



Seven jaws, three on the right side and four on the left ; the in- 

 ferior ones simple ; three short unequal inarticulated antennae ; 

 head discovered, with the forehead rounded ; eyes two, dis- 

 tinct ; no tentacular cirri. 



L. Valentina, Sav. Body slender, silvery ; antennae subulate ; eyes 

 black. Inhabits coasts of Spain.- Lam. v. 324. 



L. Olympia, Sav. Grayish white ; antennae subulate ; the hinder 

 part of the body attenuated and forming a conical tail, terminated 

 by two short filaments. Inhabits coasts of France. Lam. v. 325. 



Gen. 7. LEODICE, Sav. 



With seven jaws, three on the right side and four on the left, 

 the lower simple ; five filiform antennae, longer than the head, 

 unequal ; head distinct, with two eyes. 



The body in this genus is long, linear, almost cylindrical, with short and nume- 

 rous segments ; the branchiae are filiform and pectinated on one side ; the head is 

 broader than long, and divided before into two or four lobes. 



L. gigantea, Sav. Body very long, depressed ; tentacular cirri of 

 the first segment short ; five inarticulated antennae, twice longer 

 than the head j head four-lobed. 4 to 6 feet long, and formed of 

 448 segments. Inhabits Indian seas Lam. v. 322. 



L. Gallica, Sav. Body grayish, silvery ; antennae inarticulate ; bran- 

 chiae simple before, the others bifid, none at the last segment ; 

 body of 71 segments, of which the first five and the last eight are 

 destitute of branchiae. Inhabits coasts of France Lam. v. 322. 



L. sanguinea. Lam. Branchiae pectinated, longest towards the mid- 

 dle of the body ; tail terminated by two setae. Lin. Trans, xi. 

 pi. 3, fig. 1-3. 



