THALESTRIS. 139 
equal (fig. 17); first jomt of the inner branch having 
a series of cilia along the proximal half of the imner 
margin, and a long seta near the middle; two terminal 
claws on the last joint, which, like the preceding joints, 
is very short; outer branch densely ciliated along the 
outer margin, the elongated second joint armed near 
the middle with a long pectinated spine; the short 
terminal joint bears five long claws, some of which are 
finely ciliated. Inner joint of the fifth pair of feet 
broad and short (fig. 19); margin clothed with short 
cilia, bearing two long ciliated sete at the outer angle, 
and two shorter ones more internally; outer branch 
elongated, subquadrangular; outer marginal portion 
hispid, inner margin closely ciliated; apex broad, and 
armed with several short spines. Lateral margins of 
the abdominal segments finely aculeate; caudal seg- 
ments short and broad. The animal (according to 
Boeck) is of a brown colour, banded with red across 
the second and third segments of the body, and first 
and last abdominal rings. 
One specimen only was found in dredged material 
from a depth of forty fathoms off St. Agnes (Scilly). 
This species was removed by Boeck from the genus 
Thalestris, on the, ground of the eyes being widely 
separate and placed towards the sides of the head, 
a character represented in my figure from a drawing 
kindly sent to me by that lamented naturalist. This 
sround of generic separation seems to me, however, 
scarcely sufficient to warrant the breaking up of 
the older genus, which is not yet so overgrown as 
to require disintegration on the score of convenience. 
