HOMALATTUS WHITE. 



The spiders are small or rather small. 



The cephalothorax is high, and is about as wide as long. It 

 is highest and widest at the dorsal eyes. The posterior slope is 

 abrupt. The quadrangle of the eyes is very little wider behind 

 than in front, and at the widest point is more than one-third 

 wider than long. It occupies two-thirds of the cephalothorax. 

 The anterior eyes form a straight or slightly curved row. The 

 middle eyes are slightly separated and less than twice as large 

 as the lateral, which are well separated from them and are 

 placed farther back on the head. The second row is plainly 

 nearer the first than the third row, though not close to it, as in 

 some species of Rhene. The dorsal eyes form a row which 

 is as wide as the cephalothorax at that place. 



The relative length of the legs is 1423 or 1423. The first 

 and second pairs are the stoutest. 



We have two species of Homalattus, ru.sticus and maccuni, 

 both new, from the Amazon. 



When White founded the genus Homalattus in 1841, his 

 type was H. pustulatus from Sierra Leone (Descr. new or little 

 known Arachn., Ann. and Mag. of Nat. Hist., VII., p. 476). 

 His description is very poor, but he gives a figure which shows 

 that the eyes of the first row are all separated. In Rhene 

 flavigera (Die Arachn., XFV^., p. 86), the tj'pe of G. Koch's genus 

 Rhanis (which equals Rhene Thorell) the eyes of the first row 

 are near together and the middle ones are touching. We have 

 neither of these types, but we find in our collection three closely 

 related but fairly distinct genera. In Homalattus the first row 

 has the middle ej^es sometimes near together and sometimes 

 well separated, but the lateral eyes are always well separated from 

 the middle, and the quadrangle is very slightly wider behind 

 than in front. In Rhene the eyes of the first row are near to- 

 gether, the middle ones are usually sub-touching, and the 



