198 T. THORELL, 
Sub-ordo VII. SALTIGRADÆ. 
Syn.: 1804 Gen. Salticus Larr., in Nouv. Dict. d'Hist. Nat., XXIV, p. 135. 
1817. "Saltigrades" ID., vn Cuv., Règne Anim., III, p. 98. 
1823. Saltatores SUND., Gen. Aran. Suec., p. 20. 
1825. Saltigrade Larr., Fam. Nat., du Règne Anim., p. 317. 
1833. Attides SUND., Consp. Arachn., p. 25. 
1843. Salticidæ Buackw., The differ. in the numb. of eyes, ete., p. 616. 
The spiders belonging to this group are, as is known, distinguished 
by their high cephalothorax, which has almost vertical sides and a very 
broad back, by their usually short and thick extremities, and by the pecu- 
liar position of their eyes, which most nearly approaches that of the Lycosoidze: 
4 eyes in fact form a first row, and the remaining 4 a second and third. 
An exception in the disposition of the eyes is presented by the exotic fa- 
mily Otiothopoide, in which the eyes form only two transversal rows, con- 
verging at the ends, and by Lyssomanes among the Attoide, which genus 
has its eyes arranged in four transversal rows. In the Myrmecioide the eyes 
may be as truly said to form two rows divergent at the ends, as three; in 
Palpimanus also they are arranged in two rows, both greatly curved in op- 
posite directions, so that one might even say that the eyes of that genus form 
four rows. The family Dinopoide, which we, though with doubt, refer to 
this sub-order, differs especially in its very long and fine extremities from 
other Saltigradæ. Also in certain other genera, as for example Myrmecium, 
Salticus and Leptorchestes, the extremities are fine, though somewhat short. — 
The spinners, as far as is known, are six in number, usually not very long. 
There are generally but two claws on each tarsus, and in this case there 
is also, except in Palpimanus (and Otiothops?) a tuft of hairs dilated at the 
end immediately under the claws; Zresus (as well as Dinopis?) has 3 claws 
on each tarsus, as also a claw at the termination of the female’s palpus, 
which is absent in at least Attoide and Palpimanine. Most Saltigradæ leap 
actively, whence the name. 
We resolve the European Saltigradee into two families, Hresoide and 
Attoide, according to the following distinctive features: 
1. Cephalothorax antice valde elevato-convexus. Oculi 2 postici inter se multo 
longius distantes quam sunt duo proxime antecedentes. Tarsi unguibus trinis 
aut binis instrueti, fasciculo unguiculari carentes. . . . . . I. Æresoide. 
2. Cephalothorax deplanatus, parte cephalica non vel paullo tantum altiore quam 
parte thoracica. Oculi 2 postici inter se non multo longius quam 2 antece- 
