10 BRITISH COPEPODA. 
well as their spines, fringed on the outer margins with 
closely-set, stout, spine-like sete. Basal joint of the 
fifth pair of feet (fig. 9) produced internally into a 
narrow quadrate lamina which bears two stout, apical 
spines of moderate length and a series of about eight 
spine-like setze on the inner margin; the outer margin 
of the basal portion forms a slender process which 
is tipped with a plumose filament; second joint 
broader and shorter, tripartite at the apex, each lobe 
giving origin to a single seta, the mnermost of which 
is the shortest. Caudal sete of moderate length. 
Length of animal s5th of an inch (1°3 mm.). 
I was at one time disposed to consider this very 
well characterized species as identical either with 
Boeck’s H. melaniceps or H. curticorms, though differ- 
ing from the former in several important points, espe- 
cially in the absence of any black markings on the 
head and in the configuration of the fifth feet; in this 
last respect it also seems to differ from H. curticornis, 
so that on the whole it seems best to assign to it a 
new specific name, spunipes. It is very generally dis- 
tributed round the British Islands in water of mode- 
rate depth—from low-water mark to forty fathoms, 
and has been observed in the following places :—at 
various points off the Durham and Yorkshire coasts in 
company with Longipedia coronata, but not so abun- 
dant; in tide-pools, Aranmore, Ireland; Lough Swilly, 
two fathoms; Scilly Islands, ten to forty fathoms; 
Douglas (Isle of Man), two to three fathoms; Little 
Cumbrae (Clyde), on weeds at ebb tide; on weeds at 
Tobermory (Rev. A. M. Norman). 
