ARACHNIDES ARANEIDES SALTIGRADJG. 53 



is therefore interesting to notice tliat the three species described below and 

 referred to a new and aberrant genus of tlie family, 1'arattns, are more 

 nearly related to (Jorgopis than apparently to anv other known, and that 

 the amber nvnus contains nearlv one-half of the species of this family pre- 

 served in Kurope from ( Migoceiie times. The species of this family are 

 spwad all over the world, both in tropical and temperate regions, but seem 

 to be comparatively rare in Africa south of the desert. (November, ISsl.) 

 Gourret has added another species from Ai\, referred to an extinct 

 genus, Atto; 



PAKATTl'S, gen. nov. (>>>?, aTrco}. 



The three species hen' referred to the Attoida- seem to belong to a dis- 

 tinct genus allied to (Jurgopis of the Prussian amber, in that the posterior 

 eyes are placed far behind the others, but differing markedly from that, as 

 from all members ,,f the familv, 80 far as 1 kno\v, in two points: (1) The 

 exterior eyea of the first row are placed a little in advance of the median 

 pair of the same row, ami (2), more particularly, they are as large as 

 in- M-arcelv smaller than the-e median eyes. The anterior row, therefore, 

 is formed of four verv larj-e, nearlv equal and nearlv equidistant eves, 

 arranged in a gentle curve opening forward; the eyes of the second row, 

 so far as known, are minute and situated within and behind and in close 

 proximitv to the median eyea of the anterior ro\v, while those of the third 

 row, so far as known, are of medium size, placed at a greater or less dis- 

 tance apart in the middle of the cephalothorax, as in the American genus 

 PhidippUS and the amber Gorgopis. The American genus Phidippus is 

 confined to the wanner parts of the continent and to a large extent to the 

 tropics, so that the presence of this somewhat allied genus indicates, so far 

 as such analogy indicates anything, a warmer climate in early times for 

 Florissant. 



Tnlili- ,j lln- specie* of Paratliis. 



(Vphalothorax and abdomen well rounded, with convex siili-s 1. P. rcmtrrectn*. 



Ceuhalot borax <|iiadralr, with nearly straight siilrs. 



Small s,icc-ii->: <-.;. h:il<.t !ior;e< l.'-stlian t wicc as lon^ a.s lirnad : alidc MI c|iiadrati.' . .2. P.miratus. 



Large !. iea; I |>halothurax more than twice as Ion;; as broad ; abdomen round .. .3. /'. latitatm. 



1. PARATTUS KKSKK-KKCTUS. 

 1M. 11, Fig. 20 ( 9 ?). 



Cephalothorax broad oval, subquadrate, the sides gently convex, the 

 two ends broadly rounded; front regularly semicircular; the two middle 

 eyes of the anterior row very large, circular, situated just behind the front 

 edge; the lateral eyes of the same row nearly or quite as largo, circular, 



