198 ARICIAD^. 



with or without a short proboscis, emaxillary : feet uniramous or 

 biramous, with a dorsal cirrus, and frequently with very long bristles, 

 which are setaceous, simple or compound. 



There is but one native worm which has been referred to this 

 family, viz. the 



Nereis maculosa. 



Nereis maculosa, Montagu in Linn. Trans, xi. 21. pi. 3. f. 4. 

 Besc. " Body linear, with about thirty pairs of fasciculate pedun- 

 cles, complicated with a slender pencil of hairs above the broad fas- 

 cicles, and in some points of view appearing like a single hair ; above 

 this issues a cirrus changeable in shape, but never longer than the 

 peduncle, independent of the fasciculus : tentacula seven, the middle 

 one largest, and placed in the centre of the forehead between the 

 eyes, somewhat erect, and appears to be jointed ; eyes four, black, 

 the hindmost pair smallest, and not visible on the upper part ; the 

 others are large, and most conspicuous beneath : along the back are 

 seven cordiform, equidistant yellow spots, the ground-colour white. 

 Length about an inch. Rare. This is somewhat like Nereis corni- 

 cula, Miiller, but the want of the bifid tentacula makes it distinct." 

 — Montagu. 



Fam. X. ARICIADiE. 



Nereiscolecia, Blainv. Diet. Ivii. 485. 



Ariciens, Aud. Sf M.-Edw. in Ann. des Sc. nat. xxix. 388 ; Litt. de 



la France, ii. 252. 

 Ariciad^, Johnston in Mag. Zool. Sf Bot. ii. 63. Williams in Rep. 



Brit. Assoc. 1851, 199, and in Ann. ^ Mag. Nat. Hist. ser. 2. xii. 



404. 

 ARiciiE, Oersted, Ann. Dan. Consp. 35. 

 Ariciea, Grube, Fam. Annel. 64. 



Char, Body vermiform, roundish or depressed, of numerous shoft 

 segments. Head small, often not distinguishable from the buccal 

 segment, conical or rounded, often bilobed in front, exantennulate or 

 with two elongated antennae, with or without eyes, and, when present, 

 they are small. Post-occipital segment apodous or with setigerous 

 papillae ; in the latter case there are usually two remarkably long 

 tentacular cirri inserted laterally or in the middle. Mouth directed 

 ventrally, with or without a very short emaxillary proboscis. Feet 

 divided into two branches, or rather there are two rows of setigerous 

 tubercles on each side (four tubercles to every segment), not promi- 

 nent in general, similar throughout or differing on some segments ; 

 the bristles simple and setaceous.. Branchiae none, or in the form of 

 a setaceous or lanceolate filament reflected on the back, or elongated 



