38 Mr. J. Blackwall on new species of 
under side ; the radial joint is provided with an apophysis on the 
outer side, which has a long slender termination, obtuse at its 
extremity; the digital joint is narrow, oval, convex and hai 
externally, concave within, comprising the palpal organs, whic 
are highly developed, not very complicated im structure, convex 
and prominent at the base, with an obtuse protuberance on the 
outer side, and a slightly curved spiny process on the inner side 
whose point constitutes their anterior extremity; they are of a 
dark brown colour. 
This remarkable species, which is nearly allied to Salticus tar- 
digradus, but presents several obvious points of difference in 
structure and colour, I dedicate to Professor Sundevall of Stock- 
holm, as a testimony of the grateful sense I entertain of the 
handsome manner in which he put me in possession of his ex- 
cellent works on arachnology, and of the important information 
contained in the written communication which accompanied them. 
Family Tuomisipz. 
Genus Tuomisus, Walck. 
ll. Thomisus citreus. 
Thomisus citreus, Walck. Hist. Nat. des Insect. Apt. t.1. p. 526; 
Latr. Genera Crust. et Insect. t. 1. p. 111; Sundevall, Vet. Acad. 
Handl. 1882. p. 219; Hahn, Die Arachn. b. 1. p. 42. tab. 11. 
fig. 32; Blackw. Linn. Trans. v. 19. p. 122. 
Thomisus dauci, Hahn, Die Arachn. b. 1. p. 33. tab. 9. fig. 27; 
The collection contained specimens with and without a red 
longitudinal band on each side of the anterior part of the ab- 
domen. 
Genus Puitopromus, Walck. 
12. Philodromus perniz. 
Length of the female ;3,ths of an inch; length of the cephalo- 
thorax +; breadth 4; breadth of the abdomen + ; length of a leg 
of the second pair 2; length of a leg of the fourth pair 73. 
Eyes disposed on the anterior part of the cephalo-thorax in 
two curved transverse rows, in the form of a crescent, whose con- 
vexity is directed forwards ; the lateral eyes of-the posterior row 
are seated on minute tubercles, the intermediate pair of the same 
row being rather the smallest, and the intermediate pair of the an- 
terior row rather the largest of the eight. Cephalo-thorax nearly 
circular, but compressed before, truncated im front, and abruptly 
sloping behind ; it is convex, thinly covered with yellowish gray 
hairs, and is of a yellowish brown colour, with a large irregular 
dark brown band extending along each side to the region of the 
eyes, where a junction of the two takes place, and a longitudinal 
line of the same hue, whose anterior extremity is the longest, nm 
