LEPIDONOTUS. Ill 



Obs. Of a uniform cinereous colour, and equal at both ends. 

 {a) Firth of Forth and South Devon, Mus, Leach. 



(b) Firth of Forth, Lieut. Thomas, B.N. 



(c) Berwick Bay, Dr. Johnston. 



(d) Falmouth, J. Cranch. 



(e) Weymouth, W. Thompson. 

 (/) Aberystwith, J. Henslow. 



Plate VII. Fig.l. Lepidonotussquamatus,nsit. size. la. The jaws, slightly 

 enlarged. 1 &. A scale magnified. 1 c. A spine magnified. Id. A 

 bristle from the ventral branch of the foot magnified (not correct). 



2. L. clava, scales subcircular, margined, not imbricate nor meeting 

 on the mesial line, maculated, unciliated on the edge ; tentacular 

 and dorsal cirri bulbous below the point ; bristles as in L. squa- 

 matus. Length 1|^" ; breadth 4'". 



Aphrodita clava, Montagu in Linn. Trans, ix. 108. tab. 7. f. 3. 

 Lepidonotus clavatus, Leach in Supp. Encyclop. Brit. i. 452. 

 Halithsea clava, Templeton in Loud. Mag. Nat. Hist. ix. 234. 

 Eumolphe squamata, Blainv. in Diet. Sc. Nat. Ivii. 458, Atlas, t. . f. 2. 



Hab. The coralline region. 



Desc. Body 1-1^^ inch long, 4'" broad, linear-oblong, equal and 

 rounded at both ends, the back covered with scales touching or even 

 a little overlapping on the sides, but not meeting or scarcely so in 

 the mesial line ; the venter perlaceous, separate from the feet by a 

 depressed line, and marked across with dissepimental lines : head 

 small, conoid, with four eyes : the palpi longer than the tentacula, 

 with a very distinct bulb encircled beneath with a black ring near 

 the apex, which is setaceous ; tentacula similar, as are also the ten- 

 tacular and anal cirri : scales twelve pairs, almost circular, the middle 

 ones often ovato-reniform, permanently attached by a subcentral 

 pedicle, margined, maculated with pale and dusky irregular spots, or 

 almost uniformly leaden-coloured, smooth, except the two or four 

 anterior pairs, which are often granulous, even and unciliated on the 

 margin, and without a colourless edge : feet twenty-five pairs, stout, 

 armed with strong yellow bristles, in a level-topped, fan-shaped, 

 large fascicle ; the dorsal fascicle small, with comparatively few, short, 

 straight bristles tapered to a rather blunt point, where it is closely 

 striated across : the ventral bristles have a smooth, cylindrical shaft 

 bent towards the point, below which it is thickened a little, and 

 strongly armed with two series of sharp (about thirteen) denticula- 

 tions, the talon-like point being smooth and entire. Inferior cirrus 

 short, with a setaceous point. 



Obs. This and the preceding are allied, but very distinct. The 

 L. squamatus is narrower in proportion to the length, with less-deve- 

 loped tentacula and tentacular cirri ; and the scales overlap obliquely ; 

 whereas in L. clava they merely touch on the sides, and generally do 

 not meet on the mesio-dorsal line. The scales differ in shape ; and 

 while those of L. squamatus are all granulous, the anterior pairs only 



