Spiders 5 h 
History', 1877. T. exasperans has been identified by Simon and Kulczynski 
with Lycosa (Tarantula) alpigena of the Alps, but I cannot confirm this identifi- 
cation, not having been able to compare European specimens. 
The usual markings are shown in PI. I, fig. 11. The middle stripe of the 
cephalothorax has a characteristic form, widening behind the eyes, and narrowing 
again a little farther back. The hinder half of the stripe, especially in young 
spiders, continues narrow its whole length, but in other individuals and usually 
in adult males, it widens again opposite the dorsal groove and is sometimes 
connected by radiating lines with the light areas at the sides. The abdomen 
has two orange yellow spots at the front end, and sometimes a little orange 
colour among the grey farther back. The middle spot branches into four 
black points, and behind it are two or three black spots of variable size on 
the middle line. Outside of the median spots are four or five pairs of small, 
bright, white spots alternating with black, forming two lines converging behind 
(PL I, fig. 11). There are great variations from this pattern and one of the Bernard 
harbour males is marked as in PI. I, fig. 12. Here there is a middle stripe, 
which in life is probably covered with orange hairs, and from this branches 
extend to the white spots. The other markings are obscured in the general 
grey colour. This variety has been seen in specimens from mount Washington. 
In all varieties the legs are banded with dark and light grey. 
Locality: Bernard harbour. Northwest Territories. Barter island, Alaska, 
June, 1914. 
Lycosa asivak, n. sp. 
This species is 12 mm. to 14 mm. long. Fourth leg as long as the body. 
Black with light grey markings, which are indistinct and sometimes absent 
in the female. In the male there is a grey stripe in the middle of the cephalo- 
thorax from the eyes backward, and on the abdomen a middle grey mark in 
front, at the sides of which are light spots which unite behind into several trans- 
verse markings (PL II, fig. 13). The femora are black, but the other joints 
of the legs are covered above with short grey hairs mixed with longer black 
ones. The legs and abdomen are covered with fine black hairs, longer than 
the diameter of the legs. In the female the dorsal markings are much less 
distinct and usually form on the abdomen a small middle stripe in front and a 
series of pairs of small white spots. The legs are somewhat lighter in colour 
toward the end, but there is no strong contrast between the colour of femur 
and tibia. The fine hairs of the legs and abdomen are shorter in the female 
than in the male. The epigynum (PL II, fig. 14), has a middle lobe as wide 
as long throughout its length, and thickened in the middle. At the base of 
this lobe are two pits with oblique and slightly curved margins. The immature 
females show the undeveloped epigynum as in PL II, fig. 15. The male palpus 
is much like that of pictilis, the tibia is a little longer than wide, and about 
the same length as the patella. The tarsus is a little longer than the tibia. 
The parts of the palpal organ are small and comparatively simple, (PL II, fig. 16) 
as in pictilis. 
This spider appears to be very common and over a hundred specimens 
were taken, including two adult males in June at Bernard harbour, Dolphin 
and Union strait. Northwest Territories, and two others at Camden bay, Alaska, 
July 4, 1914. The females taken at the same time were all immature, but 
adult females were taken later, July 12 and July 19, 1915, at the latter date 
with their cocoons and eggs. 
According to Mr. Johanscn's notes, they hide, especially at the breeding 
season, in holes in the ground or in the sod which they line with silk. In one 
case a lemming hole was used for this purpose. They were found eating beetles 
and other spiders, even of the same species. The accompanying photograph 
lAsivak or arsivuk is an Eskimo name for a spider, with slight dialectic diiTerences from 
northwestern Alaska to Coronation gulf. 
Vol. iii— 46957— 2 
