80 PECKHAM. [Vol. 2, 



ends and yellowish in the middle, patella white, tibia brown, 

 metatarsus and tarsus white. 



We have received from M. Simon a light colored variety 

 of this species, the whole spider being yellowish in color in- 

 stead of black. 



Habitat. Chapoda, Brazil. Smith collection. 



SIMONELLA P., 1885. 



Body long, slender, nodose. Cephalothorax more than 

 twice as long as wide, convex above, constricted near the 

 middle; thoracic part twice as long as cephalic. Eyes very 

 unequal in size, placed in four transverse rows of two each, 

 those of the anterior row very large, nearly three times as large 

 as those of the second row, and touching, or almost touching. 

 The quadrangle formed by the second and fourth rows is wider 

 behind than in front, and wider behind than long. Eyes of 

 the third row very small, placed half-way between the second 

 and fourth rows, or nearer to the second than the fourth. Eyes 

 of the fourth row about equal in size to those of the second. 

 Sternum long and truncated in front. Lip as wide as long. 

 Legs 4312, slender. Abdomen long, slender, much narrower 

 in the midddle. 



This genus has so far been found only in Central and 

 South America. It is probably a differentiation from Synemo- 

 syna, brought about by the pushing backward and upward of 

 the lateral eyes of the first row, and an adaptive modification 

 of the shape of the cephalothorax and abdomen for mimetic 

 purposes. 



SIMONELLA AMERICANA V., 1885. 



PI. VII., Fig. 3, male; 3a, face; 3b, side of cephalothorax; 

 3c and 3d, male palpus. 



$ . Total length, 8.5 mm. 



Cephalothorax: Length, 3.5 mm.; width, 1.4 mm.; 



height, 1.2 mm. 

 Legs, 4312 ; all slender. 

 The ceplialic and anterior thoracic parts are higher and 

 more convex than the remaining portion of the thoracic, from 



