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, Lieiit. Thomas, R.N. 



(c) Berwick Bay, Dr. Johnston. 



(d) Falmouth, J. Crunch. 



(e) Weymouth, W. Thompson. 

 (/) Aberystwith, J. Henslow. 



Plate VII. Fig. 1. Lepidonotussquamatus, not. size. \a. The jaws, slightly 

 enlarged. 1 i. A scale magnified. 1 c. A spine magnified. I d. 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 Stipp. Encyclop. Brit. i. 452. 

 Halitha;a clava, Templeton in Loud. Mag. Nat. Hist. ix. 234. 

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



Hab. The coralline region. 



Desc. Body 1-1 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 aci'oss 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 



