No. 1.] ATTW.K OF CENTRAL AMERICA. 11 



FEMALES. 



1. Spiders ant-like in form, ...... 2 



Spiders not ant-like in form, ..... 5 



2. Cephalic part occupying onlj' two-fifths of cephalo- 



thorax, on a higher plane than thoracic and sepa- 

 rated from it by a constriction, . Salticus centralis. 

 Cephalic part occupying at least one-half of cephalo- 

 thorax, not separated from the tlioracic, . . 3 



3. Quadrangle of eyes wider in front than behind ; legs, 



4132, . . . . . . Martella Pottsii. 



Quadrangle of eyes equally wide in front and behind 

 or wider behind ; legs, 4312 or 4132, ... 4 



4. Cephalic part occupying one-half of cephalothorax ; 



legs, 4132, .... Paradamoetas formicina. 

 Cephalic part occupying a little more than one-half of 

 cephalothorax; legs, 4312, . Keyserliugella perdita. 



6 

 .- 18 



5. More or less red on abdomen, 

 No red on abdomen. 



6. Legs, 1423, Epinga ornata. 



Third or fourth legs longest, ..... 7 



7. Third legs longest, . 

 Fourth legs longest, . . . . . . .11 



8. Spiders large, 11 to 13 mm. long ; abdomen red with 



basal band, central longitudinal band on posterior 

 three-fourths, and two large spots, white ; the longi- 

 tudinal band and spots edged with black, 



Heraclea regia (page 77 

 Unlike the above, ......: 9 



9. Spiders about 7.5 mm. long; abdomen with ground- 



color gray with white basal band, and a herring- 

 bone stripe edged with red on posterior half, . 



Heraclea rustica (page 79 

 Unlike the above, ....... 10 



