AMPHICTBNE AURICOMA. 43 



Genus CXXXV. — Amphictene, Savigny, 1820. 



Malmgren re-established the genus Amphictene of Savigny as distinct from 



Pectinaria on the grounds that the veil or lamella has its edges fringed with subulate 



processes or cirri, and that the tube is gently curved. Though the distinctions are not 

 of great moment the name may be retained. 



1. Amphictene auricoma, 0. F. Miiller, 1776. — Plate CXVI, fig. 6--portion of tube; 

 Plate CXVIII, figs. 5— bb, tubes; Plate CXXIV, figs. 2— 2c, bristles and hooks. 



Specific Characters.— Paleolaa eleven to thirteen, tips tapered to a delicate point or 

 boldly bent like a hook. 1 Dorsal collar of scabrous area above these has its margin fringed 

 with subulate processes, and the edge passes to the base of the anterior long cirrus or 

 tentacle. Veil comparatively small, its anterior edge fringed with long subulate processes. 

 Branchias with large ovoid lamellae internally, diminishing externally, basal stem short. 

 Anterior region has three bristled segments, but is without hooks, the tufts of bristles being 

 small. Seventeen bristled segments in the region behind. Bristles similar throughout, viz., 

 stout simple bristles tapered at the tip and with traces of wings, and others with a spear- 

 shaped flattening of the serrated tips and a long hair-like end. Hook-like bristles of the 

 caudal process long, straight, rapidly diminished at the tip. which has a bold hook. Hooks 

 (which are on thirteen segments) of the long rows on the lamellae of the feet with six teeth 

 from the curve downward, then a process with numerous minute spikes on the edge, and 

 lastly a rounded prow nearly in a line with the armed face. Caudal process deeply 

 grooved dorsally and the edge boldly and symmetrically notched, the ventral surface 

 being convex and grooved by oblique furrows. Dorsal terminal lip prolonged as a some- 

 what conical process beyond the ventral lip. Caudal hooks about eight in average 

 examples, though sometimes ten. Tube gently curved, pale brownish, and often tapered 

 to a slender tip ; composed of neatly cemented and fine grains of sand. 



Synonyms. 



1769. Amphitrite auricoma, Martini. Conch., vol. i, Tab. iv, fig. 27. 



0. F. Miiller. Prodr. Zool. Dan., p. 216. 



Fabricius. Faun. GrcenL, p. 289, No. 272. 



0. F. Miiller. Zool. Dan., vol. i, p. 26, Tab. xxvi. 



Ghnelin. Linn. Syst. Nat., i, pt. vi, p. 3111. 



Turton's Linn., p. 82. 



Oken. Lehrbuch., Bd. ii, p. 377. 



Stewart. Elements, vol. ii, pi. xii, figs. 1 and 2, = Sabella granulata, 

 p. 423. 

 ,, Sabella belgica, Cuvier. Reg. An., t. ii, p. 521. 

 1818. Pectinaria belgica, Lamarck. Anim. s. Yert., t. v, p. 602. 



1 Seven to eight anterior paleae sub-equal, four inner shorter and more slender (Carus). 



1776. 



Amphitrite , 



1780. 



)} j 



1788. 





>j ? 



1791. 





» ) 



1806. 





) } 



1815. 

 1817. 







