10 LEPIDONOTUS LORDI. 
an inch broad. The colour is of a light brown, 
a broad line of a much darker brown running 
along the whole length of the centre of the back. 
On the under-surface a groove runs down the 
centre of the body throughout its whole length. 
The elytra are thirty-five pairs in number, thin, 
membranous, and of a light-brown colour. The 
two first overlap each other slightly in the 
middle, but for the rest of its length, the centre 
of the back is uncovered. The antenne are ‘five 
in number—the central one short, of much the 
same length as the internal ones; the two ex- 
ternal the longest, white, with a bright black 
ring round the upper part, but leaving the point 
white, which is acute at the apex. The feet are 
tolerably stout, and the two divisions are both 
furnished with sharp, but curved, pointed bristles. 
The superior cirri are white and of a moderate 
length, the inferior ones very short. 
A good many specimens of this species were 
taken, and they were all found nestling under 
the shell, and occasionally coiling themselves 
under the foot, of the animal of Fssurella 
cratitia. 
The Keyhole Limpet, I may briefly state for 
the benefit of the unlearned in shellfish, is a 
gasteropodous mollusc, belonging to the family 
