Spiders captured in Canada^ % 



near their base ; they are hollowed about the middle of the inner 

 surface, leaving a strong prominence near their extremity, on the 

 lower part of which a few small teeth are situated. The cubital 

 and radial joints of the palpi are short ; the former is the stronger, 

 and the latter has a small pointed process projecting from the 

 upper part, in front, and an obtuse apophysis at its anterior ex- 

 tremity, on the outer side ; the digital joint is oval, convex and 

 hairy externally, concave within, comprising the palpal organs ; 

 they are highly developed, with a strong process curving from 

 below upwards, whose termination extends nearly to the articu- 

 lation of the cubital and radial joints and has the appearance of 

 being twisted ; they are of a reddish brown colour. 



This spider, though smaller than Ergatis benigna, bears a 

 strong resemblance to it, but may be readily distinguished by the 

 annuli with which its legs are marked. 



jj jJWO'i'J 



Family Agelenid^e. b dim 



Genus Agelena, WalcL ^'^^'^'^'^ 



> i.i iioiaaSTq 

 18. Agelena Potteri. .^^^[^^ a^ffcmi 



Length of the female, not including the spinners, ^f ths of an 

 inch; length of the cephalo-thorax \', breadth \'y breadth of 

 the abdomen ^-^ ; length of a posterior leg || ; length of a leg 

 of the third pair if ; leng-th of a superior spinner -^-q. 



Eyes disposed in two transverse, greatly curved rows on the 

 anterior part of the cephalo-thorax, the convexity of the anterior 

 row being directed upwards, and that of the posterior row back- 

 wards ; the eyes of each lateral pair are seated obliquely on a 

 small tubercle, but are not contiguous ; the eyes of the anterior 

 row are larger than those of the posterior row, the intermediate 

 ones being the largest of the eight. Cephalo-thorax greatly 

 compressed before, convex, hairy, with furrows on the sides di- 

 verging towards the lateral margins, and a long indentation in 

 the medial line of the posterior region ; it is of a pale reddish 

 brown colour, with a broad, irregular, longitudinal dark brown 

 band on each side, and brownish black lateral margins ; the red- 

 dish brown spaces are usually covered with yellowish brown hairs. 

 Mandibles powerful, conical, vertical, armed- with two rows of 

 teeth on the inner surface : maxillae short, straight, increasing in 

 breadth from the base to the extremity, which is rounded and 

 fringed with long hairs on the inner side : lip short, somewhat 

 quadrate, being rather broader at the base than at the extremity : 

 these parts are reddish brown, the mandibles being the reddest, 

 and the maxillae and lip palest at the extremities. Sternum 

 heart-shaped, with numerous short, pale yellowish brown and 

 long erect blackish hairs ; its colour is dark brown, the middle 



