164 Mr. A. Randell Jackson on Spiders 
1. Leptyphantes sobrius, Ther. (1). 
Both males and females in Mr. Elton’s collection, as well 
as numbers of immature examples. JL. latebricola, L. K. (3), 
which was obtained in Nova Zembla and Siberia, is possibly 
the same species. Kdénig (10) gave additional descriptions 
of the female, but the sexual organs were not figured, nor 
does there seem to be any figure or description of the palpus. 
The paracymbium is of a very distinct shape, showing two 
very prominent upwardly projecting processes between the 
apex and base. The lamella characteristica issues from 
behind the paracymbium ; it divides into two limbs, one above 
the other. The upper one consists of a slender, slightly 
curved, pointed, chitinous rod, from the lower side of which 
springs a glistening white feathery fringe, the termination of 
which forms a plume. The lower part is a semitransparent 
fragile membranous plate, ending in a dark, strongly chiti- 
nized, spine-like point. The tibia bears above six or eight 
bristles about as long as the diameter of the joint. There are 
several long hairs on the patella, which also bears on a slight 
eminence on the upper side near the distal end a long strong 
seta several times as long as the joint. The tarsus bears a 
blunt lobe on the outer side near the base. Jt is drawn out 
into a point behind at the inner side. 
Length of articles :—patella °15 mm., tibia ‘15 mm., tarsus 
“57 mm. 
The femora of the legs are all unarmed, except the first 
pair, each of which has a spine on its upper third on the inner 
side. The first and second metatarsi each show a single 
spine above in the upper third. The third and fourth meta- 
tarsi, in addition to this, shew one at the same level beneath 
and one a little lower on the outer side, three in all. 
Colour and markings as in the female (1) and (10). 
The epigyne is fairly characteristic, but has a strong 
general resemblance to that of several other species of the 
genus. 
Advent Bay, Klaas Billen, Prince Charles Foreland. 
2. Hilaira glacialis, Thor. (1). 
Four adult males and one adult female. 
Sexual organs figured by Kulezynski (9). 
Klaas Billen, Advent Bay. 
This species occurs also in Siberia. 
stn ele 
