ARACHNIDES— ARANEIDES— SALTIGRAPJ3. 53- 



is tlierefore interestiiio- to notice that the three species described below and 

 referred to a new and aberrant genus of the family, Parattus, are more 

 nearly related to Gorgopis than apparently to any other known, and that 

 the amber genus contains nearly one-half of the species of this family pre- 

 served in Europe from Oligocene times. The species of this family are 

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

 to be comparatively rare in Africa south of the desert. (Novembei*, 1881.) 

 Gourret has added another species from Aix, referred to an extinct 

 genus, Attopsis. 



PARATTUS, gen. nov. {yrdpo?, arroo). 



The three species here referred to the Attoidse seem to belong to a dis- 

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

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

 from all members of the family, so far as I know, in two points: (1) The 

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

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

 or scarcely smaller than these median eyes. The anterior I'ow, therefore, 

 is formed of four very large, nearly equal and nearly equidistant eyes, 

 arranged in a gentle curve opening forwai'd; the eyes of the second row, 

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

 proximity to the median eyes of the anterior row, 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 warmer ^^arts 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. 



Table cf the species of Parattus. 



Cephalothorax and ahdoraen well rouuded, with convex sides 1. P. resiirrertiis. 



Cephalothorax quadrate, with nearly straight sides. 



Small species; cephalothorax less than twice as long as broad ; abdomen quadrate. .2. P.evocatits. 



Large species; cephalothorax more than twice as long as broad; abdomen round ...3. P. latitatiis. 



1. Parattus resurrectus. 



PI. 11, Fig. 26 ( 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 large, cii'cular, 



