250 British Oribatidce : Notes on New ana Critical Species. 
Cephalothorax paler than the abdomen. Rostrum 
rounded, blunt. Lamellae small short, without cusps, half 
the length of the lamellar setae. Tectopedia not so con- 
spicuous as in 0 . cuspidatus, and the pseudostigmatic organs 
slender, bluntly clavate, reflexed. 
Tarsal claws 3. All tibiae with long setae. 
Ninebanks : also sent from two or three localities in 
Durham by Mr. Bagnall and others. Exceedingly like 
O. cuspidatus, but much less active : best distinguished by 
the longer, more slender pseudostigmatic organs. 
SCUTOVERTEX Mich. 
S. MACULATUS Mich. 
S. pseudomaculatus sp. n. (and variety, insularis). (Plate B, 
fig- 4 )- 
When I first received pseudomaculatus from Mr. Bagnall 
(from rock lichen on the coast of Northumberland, near 
Whitley), I took it to be a variety of Michael’s maculatus 
which came from a similar habitat (in Cornwall), and when 
further examples of maculatus are forthcoming that may 
still prove to be its true status. Meanwhile I venture to 
put it forward as a distinct species, as it differs most obviously 
from maculatus in certain characters, both in the nymph 
and in the imago. As my knowledge of the true maculatus is 
entirely drawn from Michael’s description I append his 
characters verbatim (from ‘ British Oribatidae ’) where they 
differ from the corresponding cnaracters of pseudomaculatus. 
S. maculatus (Michael, ‘ Brit. 
Oribatidae ’). 
‘ Abdomen elliptical, slightly 
pointed posteriorly.’ 
‘ Ten short, thick, rather 
knobbed hairs round the 
hind margin.’ 
‘ Pseudostigmatic organs 
very short, with heads 
broadly piriform, slightly 
indented at the top.’ 
5 . pseudomaculatus mihi. 
Posterior margin roughly rounded, 
nearly truncate ; certainly not 
in the least degree pointed. 
Ten posterior spinous setae, four 
on each side above the margin, 
a pair in the middle below the 
margin longer than the rest ; all 
rather thick at the base but 
tapering to a very sharp point. 
Pseudostigmatic organs very short 
with globose heads (no trace of 
indentation at the top). 
{To be continued.) 
: o : 
Mr. Wilfrid Robinson, son of Mr. J. F. Robinson, of Hull, whose 
work on the lower forms of plants we have noticed from time to time, 
has received the degree of M.Sc. of the Manchester University. 
We understand that the trustees of the Lightbown Bequest at Darwen, 
to whom ^10,000 was left to use as they thought discreet in the establish- 
ment of a permanent memorial to the donor, have at length decided to 
erect a Museum and Art Gallery. 
Naturalist, 
