210 J. H. Emerton, 
Dolomedes sexpunctatus, Hentz. (Plate VII, figures 6, 6a, 6b.) 
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 feund 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. Lycoside. 
The male of this species was described and figured in New Eng- 
land Lycoside in 1885. The female was described in the same 
paper under the name of D. tenebrosus. 
‘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 15mm. The eyes of the 
front row are small and the middle pair only slightly larger than 
the lateral, while in zdoneus the middle pair are twice as large. 
The epigynum, which is correctly figured in N. E. Lycoside, has a 
narrow middle lobe bluntly pointed behind. The color in alcohol 
inclines to be olive, while in zdoneus 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 /foxtanus, is less so in idoneus. The sternum 
of fontanus has a distinct light middle stripe which is absent or 
very indistinct in zdoneus. 
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 
od 
as long, measuring 7 mm. The first and fourth legs are of the same 
