•_> io J. H. Emerton, 



Dolomedes sexpunctatua, Hentz. (Plate VII, figures 6, 6a, 61).) 



A male from Wellesley, Mass. has the cephalothorax 5 mm. long 

 and the same in width. The hind leg 23 mm. The spider had been 

 put in alcohol very soon after moulting and the legs and palpi are 

 probably not fully extended. The markings are like those of the 

 female and the colors like a young and pale female preserved in 

 the same way. 



The male palpus has a long process on the outside of the tibia 

 nearly as long as the joint itself. It is thin and flat, widened and 

 rounded at the end, and has a small tooth on the under side near 

 the base. The end of the tibia is shrunken and should no doubt 

 be wider at the end than at the base, as it is in a Tennessee spe- 

 cimen apparently of the same species. The palpal organ is like 

 that of D. fontanus. 



A nest of this species was found at Amherst, Mass., Sept. 5, 1905 

 on golden rod two feet above the ground. The nest was about 

 three inches in diameter, and the young spiders, early in the mor- 

 ning, were gathered in the lower part of it. The female was on 

 the plants a short distance below the nest. 



Dolomedes fontanus, Em. New Eng. Lycosidse. 



The male of this species was described and figured in New Eng- 

 land Lycosidae in 1885. The female was described in the same 

 paper under the name of D. tcncbrosus. 



Marx in a note in his catalogue of N. American Spiders in 1890 

 gave his opinion that these were male and female of the same 

 species, which a study of more specimens has shown to be correct. 



The female has the cephalothorax 9 mm. long and 8 mm. wide, 

 and the abdomen varies from 10 mm. to 15 mm. The eyes of the 

 front row are small and the middle pair only slightly larger than 

 the lateral, while in idoneus the middle pair are twice as large. 

 The epigynum, which is correctly figured in N. E. Lycosida?, has a 

 narrow middle lobe bluntly pointed behind. The color in alcohol 

 inclines to be olive, while in idoneus it is reddish brown. The 

 marginal white stripes on the cephalothorax in life connect together 

 in front of the head. The light middle stripe, which is distinct on 

 the cephalothorax of fontanus, is less so in idoneus. The sternum 

 of fontanus has a distinct light middle stripe which is absent or 

 very indistinct in idoneus. 



The male is smaller than the female, with the legs more slender 

 but as long as those of the female. The cephalothorax is as wide 

 us long, measuring 7 mm. The first and fourth legs are of the same 



