ORDER DORSIBRANCHIA. 
19 
MM. Audouin and Edwards approximate to the amphi- 
nomse, Hippo noe, which have no caruncle, and but a single 
bundle of bristles, and a single cirrhus to each foot. 
There is a species belonging to Port Jackson, Hipponoe 
Gaudicliaudii , Ann. des Sc. Nat. t. xviii. pi. vi. 
Eunice, Cm ., 
Have also gills in the form of plumes, but their proboscis is 
powerfully armed with three pairs of corneous jaws differently 
formed. Each of their feet has two cirrhi, and a bundle of 
bristles. Their head has five tentacula above the mouth, and 
two at the nape. In some species only there are two small 
eyes. 
Eunice s the name of a nereis in Apollodorus. M. Savigny 
makes it the name of a family, and gives to the genus the 
name of Leodice ; M. de Blainville has changed these 
names, first into Brand doner eis, and then into Nereidon. 
The sea of the Antilles possesses one species of more than 
four feet long, Eun. gigantea , Cuv., which is the largest of 
the known Annelida. 
There are several on our coasts less considerable in size ; 
such as Nereis Norwegian, Gm., Mull., Zool. Dan. I. xxix. 1 ; 
N. pinnata, ib. 2 ; N. Cnprea , Bose., vers. I. v. 1 . ; Leodice 
Gallic a, and L. Hispanica , Sav ; Leod. antennata , Sav. 
Annel. pi. iii. fig. 1 — 4 ; Eun . harass'd. ib. fig. 5 — 11. 
M. Savigny distinguishes from them, under the name of 
MarpiiiSjE, species otherwise very similar, but which want 
the two tentacula in the nape. Their upper cirrhus is very 
short ; Ner. sanguinea , Montag., Linn. Trans, xl. pi. iii. 
A species at least closely allied, N. Tubicola , Mull., Zool. 
Dan. I. xviii. 1 — 5, inhabits a corneous tube. 
It is probably near Eunice that should come the Nereis 
crassa, Mull., Vers., pi. xii., which M. de Blainville, without 
having seen it, proposes to refer to the genus Eteone of M. 
