96 Mr. J. Blackwall on newly discovered species of Araneidea. 



ing to oval ; it is of a pale reddish brown colour^ with dark brown 

 spots on the margins, opposite to the insertion of the legs. Legs 

 robust, provided with hairs and spines ; they are of a pale red- 

 dish brown colour, the entire femora of the anterior pair, the 

 anterior extremity of those of the other pairs, a spot on each side 

 of the genual joint, and one on each side of the tibiae of the pos- 

 terior legs being brownish black ; the first and second pairs are 

 decidedly longer and more powerful than the third and fourth 

 pairs, the first pair being the longest, then the second, and the 

 third pair the shortest ; each tarsus is terminated by two curved 

 pectinated claws. The palpi are short; the humeral joint is 

 brownish black, and the cubital, radial and digital joints are of 

 a pale reddish brown colour marked with a few dark brown spots ; 

 the radial joint is stronger than the cubital, and projects two 

 apophyses from its anterior extremity ; one on the outer side, 

 which is long, slender and pointed, and the other, which is 

 strong, prominent, obtuse, with a protuberance at its base, on the 

 outer side, is situated underneath ; the digital joint is oval, con- 

 vex, and hairy externally, concave within, comprising the palpal 

 organs; they are moderately developed, rather complicated in 

 structure, and are of a dark reddish brown colour. Abdomen 

 depressed, corrugated on the sides, broader at the posterior than 

 at the anterior extremity, the latter, which appears as if cut in a 

 straight line across, projecting over the base of the cephalo-thorax ; 

 its colour is dark brown tinged with olive and freckled on the 

 upper part with minute yellowish brown spots, those on the pos- 

 terior part, being confluent, form a few obscure transverse bars ; 

 five circular yellowish brown depressions occur on the upper 

 part ; the three anterior ones are much the most conspicuous, 

 and describe a triangle whose vertex is directed forwards ; imme- 

 diately before this vertex there is a small yellowish white spot ; a 

 narrow band of the same colour, spotted with brown, extends 

 along each side, and a short, obscure, curved, yellowish white 

 line is situated near the outer side of each branchial operculum. 

 This spider was taken at Interlacken in June. 



Genus Philodromus, Walck. 

 4. Philodromus vivax. 



Length of the female ^th of an inch ; length of the cephalo- 

 thorax jQ ; breadth -^^ ; breadth of the abdomen ^ ; length of a 

 leg of the second pair f ; length of a posterior leg /^. 



Cephalo-thorax short, broad, slightly compressed before, con- 

 vex and glossy ; it is of a dark brown colour, with a large yel- 

 lowish brown oval in the cephalic region, comprising an oblique 

 ^ro,^n,l^ne directed backwards from each lateral eye of the pos- 



