30 Mr. J. Blackwall on new species of 
VII.—Notice of Spiders captured by Professor Potter in Canada, 
with descriptions of such Species as appear to be new to science, 
By Joun Brackwatt, F.L.S. 
On the return of my friend Professor Potter from Canada to 
England in the autumn of 1844, he obligingly transmitted to me 
specimens of spiders preserved in spirit, which he had captured 
in that and part of the preceding year in the vicinity of Toronto. 
The collection comprised twenty-six species, including numerous 
varieties occasioned by differences in age, sex, and other cireum- 
stances of a less obvious character ; seventeen of them I have de- 
scribed in detail, under the impression that they are new to 
arachnologists; one is known to occur in the United States of 
North America; and the remaining eight species, which are com- 
mon to the American and European continents, I have introduced 
as contributing in some measure towards the elucidation of a 
subject possessing a considerable degree of interest ; namely, the 
geographical distribution of Aranezdea. 
Tribe OCTONOCULINA. 
Family Lycosip2. 
Genus Lycosa, Lair. 
1. Lycosa Babingtoni. 
Length of the remnle ths of an inch; length ei the cephalo- 
thorax 7; breadth 75; Tread of the abdomen <3 183 length of 
a posterior leg 13 ; length of a leg of the third pair {. 
Mandibles powerful, conical, vertical, very hairy in front, and 
provided with strong teeth and long hairs on the inner surface : 
maxille gradually enlarged from the base to the extremity, which 
is obliquely truncated and fringed with long hairs on the mner 
surface ; they are somewhat curved towards the lip, which is al- 
most quadrate : sternum heart-shaped, hairy : these parts are dark 
brown, the ‘extremities of the maxillz and lip being tinged with 
red. Cephalo-thorax hairy, compressed before, depressed on the 
sides and at the posterior part, with furrows diverging from the 
middle towards the lateral margins, and a narrow indentation in 
the medial line of the posterior region ; it is of a brown colour, 
which is darkest at the anterior part, where the eyes are seated, 
and it has a narrow, longitudinal, yellowish brown band on each 
side and in the middle, the latter bemg the most conspicuous. 
Intermediate eyes of the anterior row larger than the exterior 
ones ; anterior eyes of the quadrilateral the largest of the eight. 
Legs long, robust, provided with hairs and sessile spines ; fourth 
