BRITISH ORIBATIM: : 
NOTES ON NEW AND CRITICAL SPECIES. 
281 
Rev. J. E. HULL. 
{Continued from page 2jo). 
There are other minor discrepancies, especially in the 
sculpture of the cephalothorax, but these are characters 
not quite so definitely expressed b}' Michael. 
The S. maculatus of Oudemans and others (from the coast 
of Holland and Sweden) is, I think, undoubtedly identical 
with pseudomaculatus. So also is Tragardh’s single specimen 
from Greenland, which he called S. maculatus var. groen- 
lanctica. It is, I suppose, a young imago incompletely 
pigmented. In some of my collections quite a half of the 
specimens are in this state. 
Insularis is without doubt a variety (aberration would be 
a better term!) of pseudomaculatus. At first sight I took it 
to be simply a case of retention of the cast nymphal dorsum, 
so similar is the sculpture of the dorsum to that of the 
nymph, and could hardly believe it was otherwise till I had 
actually" removed it from two or three specimens. The 
resemblance in outline is as close as the resemblance in 
sculpture : in each case it stops short of identity. It will 
suffice to say that the dorsum is oblong, rounded behind, 
strongly wrinkled transversely, raised a little in tiie middle 
and at the sides ; not very strongly chitinized in any of the 
examples I possess. Marginal spines equal, or nearly so, of 
the same character precisely as those of the type form. 
The typical form swarms on lichen growing on walls and 
rocks near the sea in the neighbourhood of Whitley Bay, 
Northumberland. Mr. Bagnall also took it on the same 
yellow lichen on walls on Muggleswick Common, Durham, 
at an altitude of about 1,600 feet. Insularis I first found 
on St. Mary’s Island, on rocks occasionally covered by the 
tide. It was living in company with S. bilineatus, but only 
in very small number among myriads of the latter. It 
occurred again with the type form on the mainland nearly 
opposite, on lichen in a cliff wall. 
S. sculptus Mich. 
S. lixeatus Thor. ( — corrugatus Mich.). 
Both of these species are abundant in the neighbourhood 
of Tynemouth, the latter in fresh-water pools, the former 
in ground moss ; and S. sculptus has been taken also far 
inland among the hills, near Wooler (Mr. Bagnall), and 
Middleton-in-Teesdale (Mr. J. W. H. Harrison). 
1914 Sept. 1. 
s 
