538 REV. O. P. CAMBRIDGE ON [Nov. 25, 
to those of the European species (P. aureolus and P. cespiticolis) 
to make it unnecessary to do more than point out the differences of 
pattern and colour. 
The cephalothoraz is of a deep bistre-brown colour, with a broad 
longitudinal central yellowish band, and the sides are thinly marked 
with some irregular spots of the same colour; the central band con- 
tains a conspicuous and characteristic clear white marking of a 
somewhat blunt-pointed V-shape, behind which is a short dark brown 
longitudinal line indicating the point of junction of the thoracic 
segments. 
The /egs are moderately strong; those of the second pair are 
much the longest, and those of the third pair slightly the shortest ; 
their colour is a rather clear yellowish, blotched and marked with 
deep blackish brown, and near the articulations of some of the joints 
with white ; they are furnished sparingly with hairs and some spines, 
the latter mostly beneath the tibiz and metatarsi. 
The abdomen is of an oval form, and of a warm yellowish-brown 
hue; the upperside has on its fore part a deep-brown oblong mark- 
ing, broadest near its middle, and with several projecting angular 
pomts on either side; this marking is strongly bordered with a 
broken line of yellowish white, and is followed towards the spinners 
by several small angular markings of a similar colour, and decreasing 
gradually in size as they approach those organs. Towards either 
side of the abdomen is a curved longitudinal row of obscure pale 
spots, followed behind by a somewhat curved and angular black 
dash ; these dashes converge backwards, and the ground-colour in- 
cluded between them is rather darker than that of the rest of the 
upperside of the abdomen, and continues to a point just above the 
spinners; on the outer margin of the above-mentioned black dashes 
are some blotches of a pale yellowish colour; the sides have a dark 
patch forwards, and are generally spotted and marked with the same 
colour. The abdomen is yellowish beneath, thinly spotted with 
deep brown, and with three longitudinal broken stripes or dashes, 
the centre one of which is the clearest and most distinct. 
The séernum also is yellow, marked with dark brown spots on its 
outer margin, and a short central longitudinal stripe at its hinder 
extremity. 
The collection contained an immature female of this pretty and 
distinctly marked Philodromus, which appears to be hitherto unde- 
scribed. 
Gen. Oxtos. 
OLIOS TRIDENTIGER, 0. sp. (Plate XLII. fig. 6.) 
Male adult, length 43 lines. 
Cephalothorax short and broad ; caput truncate on the anterior 
margin; the ¢horacie portion nearly circular; sides somewhat flat- 
tened; surface densely pubescent, with warm salmon-grey-coloured 
hairs, and with a broad somewhat irregular curved band of greenish 
brown on either side of the median line; the form and distribution 
of this band indicate the grooves formed by the junction of the 
