Spiders captured in Canada. — 81 
traced extending along the middle of the upper part of the ab- 
domen. , 
25. Epéira canadensis. 
Length of the female ith of an inch; length of the cephalo- 
thorax ;1,; breadth ;+, ; breadth of the abdomen 3 ; length of an 
anterior leg 7’; ; length of a leg of the third pair +. 
Cephalo-thorax rather small, compressed before, somewhat 
pointed in front, very convex, with a large, longitudinal indenta- 
tion in the middle of the posterior region ; it is of a dull yellowish 
brown colour, and the anterior part, which has a brown spot on 
each side of the medial line, is sparingly covered with hoary hairs. 
Eyes disposed in two transverse rows on the anterior part of the 
cephalo-thorax ; the four intermediate ones are seated on an ob- 
tuse prominence and form a square, those of the posterior pair, 
which are placed on black spots, being the largest of the eight ; 
the eyes of each lateral pair are the smallest, and are placed on a 
minute tubercle, but neither obliquely nor contiguously. Man- 
dibles powerful, conical, vertical, rather long, somewhat diver- 
gent at the extremities, and armed with two rows of teeth on the 
iner surface : maxillz short, strong, enlarged and rounded at the 
extremity : lip semicircular and pointed at the apex: these parts 
are dull yellowish brown. Sternum heart-shaped, brown. Legs 
moderately long, slender, provided with hairs and spines; first 
pair the longest, then the second, third pair the shortest:; they 
are of a dull yellowish brown colour, marked with obscure brown 
annuli, the annulus at the extremity of each femur being the 
largest and most conspicuous. Palpi dull yellowish brown. Ab- 
domen somewhat triangular, with an obtuse prominence above 
the spinners ; it is thinly clad with hairs, convex above, project- 
ing over the base of the cephalo-thorax ; its general colour is dull 
yellowish brown, the upper part having a large, dark brown, 
festooned band extending along the middle and tapering to the 
spinners ; this band comprises several transverse dull yellowish 
_ brown bars, the anterior one, which is much the largest, being 
crescent-shaped with its convexity directed forwards. 
The specimen from which the above description was made had 
not attained to maturity, as the organs of reproduction were not 
fully developed. 
Genus TrerracnatHa, Lair. 
26. Tetragnatha armigera. 
Length of the female, not including the mandibles, 2ths of an 
inch ; including the mandibles 3 ; length of the cephalo-thorax 3, ; 
breadth ;4,; breadth of the abdomen ;+, ; length of an anterior leg 
14; length of a leg of the third pair 2. 
