314 PROCEEDINGS OF THE ACADEMY OF [Marcll, 



Genus DOLOMEDES Latreille, 1804. 



Key to the Species of Dolomedes. 



(For the females only.) 



a. 1. — Second eye row broader than the first, posterior edge of the eyes 

 of the second row on a line with the anterior edge of the eyes 

 of the third row, , , . scapularis Koch, Keyserling, 1876. 

 a. 2. — Eyes not so. 



b. 1. — Head not demarcated from the cephalothorax; cephalo- 



thorax with a very distinct, white submarginal band; 



sternum with 3 pairs of black spots, . . sexpundatus. 



b. 2. — Head demarcated from the cephalothorax ; not so colored. 



c. 1. — Median piece of epigynum only one-half its length; 



leg IV longer than I by less than one-third the length 



of its terminal joint, idoneus. 



c. 2. — Median piece of the epigynum extending its whole 

 length; leg IV longer than I by almost the full 

 length of its terminal joint. 

 d. 1. — Epigynum distinctly broader than long; legs imi- 

 form dark color without rings below, with indis- 

 tinct yellowish markings on the superior surface 

 of the femora, coxse the same color as the ster- 

 num; sternum with median band indistinct; 

 cephalothorax without a yellow median line; 

 abdominal dorsum with a yellow median band, 

 anteriorly to the anterior end of which joins a 

 pair of less distinct yellow lines, and posteriorly 

 with 3 pairs of small white spots connected by 

 transverse whitish lines that are slightly curved , 



urinator. 

 d. 2. — Epigynum almost as long as broad; legs above 

 with distinct yellow marbling on the femora, 

 below with distinct rings on the patellse, tibiae 

 and metatarsi, the coxae below clear yellow and 

 lighter than the sternum; sternum blackish 

 with a distinct yellow median band; cephalo- 

 thorax with a distinct yellow median line; 

 abdominal dorsum anteriorly with 3 pairs of 

 lateral yellow lines connected with the median 

 one, posteriorly without pairs of white spots and 

 with a series of transverse yellow bands each of 

 the shape of a W, fontarms. 



Dolomedes sexpunctatus Hentz. PI. XX, fig. 34. 



Dolomedes sexpunctatus Hentz, 1841. 

 Dolomedes sexpunctatus Hentz, Emerton, 1885. 

 Dolomedes sexpunctatus Hentz, Montgomery, 1903. 



(Numerous specimens from Austin, Texas, and one from Massachu- 



