226 Falconer: The Spiders of Wicken, Cambridge. 
Evythreus nemorum Moch. Several examples from various 
parts of fen. 
Gamasus crassipes L. Abundant in the fen. 
Cyrtolelaps nemorensis Koch. One example oe each side 
of fen. 
DESCRIPTION OF NEW SPECIES. 
CENTROMERUS INCULTUS Sp. nov. 
(Pigs sii h2, ts): 
Adult female, I°9 mm. 
This little spider is similar in general appearance and 
structure to other smaller members of the same genus, but is— 
although different individuals of the latter (especially in C. 
avcanus Cambr., in which the male is also always larger than 
the female, an unusual circumstance amongst spiders) vary 
in point of size and depth of colour—distinctly smaller, and of a 
somewhat different coloration, the whole body being dull 
yellowish brown, suffused with blackish brown on the abdomen, 
cephalothorax and legs. Its mouth parts, eyes (fig. 2), and 
sternum (fig 1) conform to type and present no exceptional 
features. 
Its epigyne is of the same type as that of C. arcanus Camb., 
and at first sight appears very similar, but comparison of the 
various details shows that it is quite distinct from it, and 
characteristic. In both species this organ is of rather complex 
structure, but on reference to the drawing of that of C. in- 
cultus (fig. 3), it will be seen that the distinctive central longi- 
tudinal ligulate process is much broader and shorter and 
extends very little beyond the posterior level of the rest of 
the epigyne, while the corresponding process in C. arcanus 
Cambr. (fig 4), is not only much longer ‘and narrower, but 
projects a considerable distance backwards. There are other 
obvious differences which together with its smaller size and 
different colouration, will render the identification of the 
present species easy. 
I am indebted to the Rev. O. Pickard Cambridge for 
drawings from which figs. I, 2, 3 were prepared. 
MARO SUBLESTUS Sp. nov. 
(Figs?-5,"6, 7, <6 boyeno)er = 5. 
Adult female, 1°3 mm. 
CEPHALOTHORAX, MAXILLAE, FALcEs and LEGs of a general 
yellowish brown colour, the first-named with the darker 
markings specified below. PUBESCENCE sparse. 
CEPHALOTHORAX (fig. 5). much longer than wide, oblong 
oval, narrowed a little forward from the level of the 
Naturalist, 
