APSEUDES TALPA. 151 
ward direction (as have also the sixth and seventh pairs) ; 
in all these legs the hand is armed near the base of the 
under margin with a strong spine, against which the 
extremity of the finger, when closed, impinges, this joint 
being dilated in the two posterior pairs, and strongly 
ciliated along both its inner and outer margins and apex, 
the finger being planted anteriorly within the palm of 
the concave hand. 
The ventral appendages of the five segments of the 
tail are free, consisting, in each segment, of two pairs of 
delicate, elongate-ovate plates, each pair attached to a 
basal, three-jointed footstalk, the first joint of which 
consists of a plate, having the posterior margin serrated 
and furnished with several long bristles, the anterior 
margin being fringed with plumose hairs, as also the 
inner margin of the third joint, as well as both those of 
the subtending plates. 
The sixth segment is semi-ovate, and furnished at each 
side with an appendage formed of a single-jointed pe- 
duncle, supporting one long and one short filamentary 
branches formed of numerous articuli, increasing in 
length as they diminish in size towards the distal ex- 
tremities. 
We only know the female of this species. 
The incubatory pouch is formed of very slender, semi- 
transparent plates, which permit the large eggs enclosed 
to be distinctly visible. 
The general colour of the animal, when alive, is 
yellowish-white, the hairs and divisions between the seg- 
ments of the body partaking more of the former colour. 
Colonel Montagu took this species on the large scallop 
(Pecten maximus) at Salcombe, on the South Devonshire 
coast. It has also been taken off Guernsey, by the Rev. 
