Chapin — Simonella, a Genus of Salticid Spiders. 131 



In the 1892 paper, the word description and the figure appear not to be 

 in accord. According to the description the palpus should be black and 

 the legs, except for the distal end of the fourth and the inside of the patella, 

 tibia and metatarsus of the first, should be pale. In the figure, the palpus 

 is pale, while the femora of the third and fourth pairs of legs are dark. 



I have attempted to bring out the salient characteristics of the species of 

 the genus in the appended key. A key based on word descriptions or even 

 figures is usually very unsatisfactory but often times proves to be of some 

 value. Owing to the lack of knowledge of the female in some cases the key is 

 based on general characters or male characters, but in no case is a purely 

 female character used. 



1. Caput with four or six black spots on a golden brown background.. 2. 



Caput entirely black - 5. 



2. Distance between the outside margins of eyes of second row less than 



that between outside margins of eyes of first row; abdomen grayish; 



habitat French Guiana Jucasii (Tacz.) 



Second row of eyes as wide or wider than first row - 3. 



3. Caput with four black spots; abdomen with two pale annulations, 



one at the middle of the anterior part, the other at the constriction; 



habitat French Guiana - myrmeciaeformis (Tacz.) 



Abdomen without pale annulations... -A. 



4. Caput with six black spots; abdomen with a lozenge-shaped black 



spot at the constriction; chela without tooth at base of promargin; 



habitat Florida, U. S. A. petrunkevitchi Chpn. 



Caput with four black spots; abdomen with pedicel black; chela with 

 tooth at the base of promargin;' habitat Venezuela bicolor Peckh. 



5. Process of tibia of male palpus almost quadrate, directed toward the 



hyposynangeal surface, habitat BrazU myrmeciaeformis Peckh. 



nee Tacz. 

 Process of tibia of male palpus acutely triangular, directed anteriorly. ..6. 



6. Tibia of male palpus less than half as long as tarsus decipiens O. P.-C. 



Tibia of male palpus as long as tarsus americanus Peckh. 



lAccording to F. O. Pickard-Cambridge in Biol. Centr.-Amer., Arach., Vol. 2, p. 169, 171, 

 PI. 12, figs. 1-2. Specimen from Panama, Bugaba. 



