686 MR JAMES MURRAY ON 
(3) Median, triangular; (4) Pair, long lateral seta, and strong dorsal spine or seta; 
(5) Median, triangular; (6) Pair, long lateral seta, and strong dorsal spine or seta; 
(7) lacking ; (8) Lumbar, trefoliate, with short spine. 
Among forms agreeing with #. granulatus in having three dorsal processes, on the 
first and second paired plates and the lumbar plate respectively, diminishing in size 
from the first backwards, there is considerable variety in the size of the processes 
and in the number of lateral setze. The dorsal processes may all be spines; or the first, 
or both first and second, may be setee. There may be only two lateral setae, a and d; or 
they may be three, a, c, and d. There is no justification for separating any of these as 
distinct species, unless after a full study of the development, as the eggs are unknown. 
Three varieties were found in Loch Morar. 
First (figs. 6a and 6b). An elongate, large animal, with only two lateral setee, a and 
d, one dorsal seta, and two spines. Straight barbs on the outer claws of last legs. 
Granules variable in different examples—very coarse or moderately fine; uniform. 
Pharynx large, cordate. 
Though large, it has not been seen with eggs. 
Size, gs inch = 294u 
Second. Two large dorsal spines and a small one; three lateral setee, c and d very 
long. Barbs of outer claws not seen. Granules moderate. Size, 5 inch = 277. 
Third (figs. 6c and 6d), like the second, but first dorsal process a very long seta. 
Straight barbs on the outer claws, up to three on those of the last legs. Granules 
moderate. Size, up to gy inch = 312n. 
The species resembles &. blum: (15) in having barbs on the outer claws. That 
species has, however, more numerous lateral and fewer dorsal processes. The elongation 
of the last dorsal process in H. granulatus would produce an animal like L. blum. The 
absence of the barbs of the outer claws from descriptions of species must not be regarded 
as of much importance, as they may have been overlooked, or they may only appear at 
a late stage in development. Tor fuller account of appearance of barbs in this species, — 
see ante, under development of Hchiniscus. 
Habitat.—Loch Morar, abundant ; Loch Ness, frequent. 
A larva, probably of this species, is shown in fig. 6e. 
The first variety described above differs from this larva in that the second lateral 
process is on the second paired plates, instead of the first ; so it may prove to belong to 
another species. 
Echiniscus spitzbergensis—ScourFiELD. (Plate II. figs. 7a to 7c.) (6). 
Specific Characters.—Plates nine, arrangement normal. Four lateral sete (one on 
the head, shoulder, and each of the paired plates); long dorsal seta on first pair, 
and shorter spine on second pair. Inner claws with small decurved barbs. Granules 
very large. 
. fa | 
a 
