556 
MR. H. N. RIDLEY ON THE 
pale grey, some parts being a trifle paler than others ; and there 
is a slight mixture of pale yellowish-brown pubescence, especially 
on the elytra. On the underside the pubescence is more sandy 
yellow, leaving the middle of the sterna and abdomen dark. The 
thorax has the usual line of large punctures at the base; a very 
slight raised line behind the middle of the disk ; the lateral tooth 
small and acute. The elytra have the very slight costa near the 
suture a little less raised at the base than in T. dimidiatm , and 
the apical truncature of each elytron is not straight but has the 
angles rouuded. The black punctures are arranged as in T. di- 
midiatus , but extend to the apex. There is a small pale spot at 
the base close to the scutellum, and a scarcely noticeable brown 
spot near the suture a little way from the base. One example 
has a slight whitish mark on the suture just before the middle, 
and a moderately broad whitish band near the apex, somewhat 
similar to the band in T. dimidiatus, but broader nearer the apex 
and less angular near the suture, where it is only carried up to a 
level with its origin on the margin. 
This species is, in many respects, intermediate between T. di- 
midiatus and T. melancholicus. 
[These also came to light with the preceding, but were rarer, 
only two being taken. — H. _ZV. R.~] 
Pseudotrim era. 
ScYMNUS, Sp. 
Two examples of a species resembling the Indian S. xeranipe- 
linus, Muls., but a trifle smaller (1^ millim.) : uniform brownish 
yellow, with golden pubescence ; punctuation of the elytra close, 
fine but distinct ; metasternum very strongly punctured. 
THYSANUEA and COLLEMBOLA. 
By H. N. Bidley, M.A., F.L.S. 
Iapyx Saussurii, j Humbert, Rev. et Mag. Zool. Sept. 186S, 
p. 351, pi. ii. figs. 1-5. 
A single 'specimen of what I believe to be a young example of 
this little animal was obtained under a stone in the Sapate woods. 
