DORSIBRANCHIAT^. 455 



an abundant yellowish liquid when touched. It has thirteen 

 pairs of branchiae(l). 



Amphinome, Brug.(2) 



A pair of more or less complex, tufted or plumose branchiae on each 

 ring of the body, and to each of the feet two fasciculi of separate 

 setae, and two cirri; no jaws to the proboscis. The Amphinomes 

 are divided by M. Savigny into 



Chloeia, Sav., 



Where the head is furnished with five tentacula, and the branchiae 

 resemble a tripinnate leaf. 



The Indian ocean produces one of them, the Amphinome che- 

 vellue, Brug.; Tenhella flava, Gm.,- Pall., Miscell. VIII, 7 

 1 1, very remarkable for its long bundles of lemon-coloured setx, 

 and the beautiful purple plumes of its branchiae. Its form is 

 broad and depressed, and it has a vertical crest on the snout. 

 And into the 



Pleione, Sav. Amphinome, Blainv., 



Where, with the same tentacula, the branchiae are tufted. The 

 Pleiones are also from the Indian ocean, and some of them are very 

 large(3). To these he adds the 



EuPHRosiNE, Sav. (4) 



Where the head has but a single tentaculum, and the tree-like 

 branchiae are very complex and greatly developed. To this sub- 

 genus, Messrs Audouin and Edwards approximate the 



HiPPONOE, 



Which has no caruncle, and but a single bundle of setae, and a 

 single cirrus to each foot. 



Hip. Gaudichcmdii, Ann. des So. Nat. t. XVIII, pi. vi. A spe- 

 cies from Port Jackson. In the 



(1) Add Arenicola clavata, Ranzani, dec. I, p. 6, pi. i, f. 1, should it prove to be 

 a distinct species. 



(2) This g-enus has very properly been withdrawn by Erugieres, from the 

 ApimoBiTai of Pallas and the Terebell^e of Gmelin. It forms the type of M. Sa- 

 vigny's family of tlie A3iPHiN0Mi"E, also adopted by his successors. 



(3) Terebella carunculata, Gm., .Amph. car., Pall., Miscell., VlII, 12 13; Ter. 

 rostraia, 14 18; Ter. complanata, lb., 19 26; Pleione alcyonia, Sav., Eg-., 

 Annel., II, f. 3. 



(4) Euphrosine laureata, Id. lb., f. 1; E. mirtosa, Id., lb., 2. 



N.B. The genus Aristenia, Sav., Eg., Annel., pi. ii, f. 4, should also come 

 near the Amphinomes; but it is only established on a mutilated specimen. 



