58 NEW YORK STATE MUSEUM 
Synonymy 
Dolomedes striatus Giebel, Zeitschrift fur die Gesammten Natur- 
wissenschaften, 1869, 33 :252 
Dolomedes striatus, Marx, Proc. Nat. Mus., 1890, 12:566 
Dolomedes striatus, Banks, U. S. Nat. Mus. Bul. 72, 1910, p. 53 
(Regarded by Banks as a synonym of D. tenebrosus Hentz) 
Dolomedes striatus, Petrunkevitch, Bul. Amer. Mus. Hist., 10911, 
29:542 (Here considered as a synonym of D. tenebrosus Hentz) 
Dolomedes sexpunctatus, Emerton, Trans. Conn. Acad., 1900, 
14:210 (in part) pl. 7, fig. 6 
Remarks. The specimens described by Giebel from Illinois were 
small, only 6mm long, and doubtless immature. This species which 
has apparently been confused with Dolomedes triton 
Walckenaer, is distinct in size, proportions, color’pattern and struc- 
ture of the epigynum; in fact there is a strong superficial resemblance 
iO ID Kihwnprlawwug (Glherek)., Ika IDs weikO@M, woe’) Wysinti, 
longitudinal stripes of the cephalothorax whether narrow or broad 
are submarginal; in D.striatus, these stripes are parallel with the 
dorsal groove and a considerable distance from the lateral margins 
of the thorax. The abdomen of D. striatus above is uniform 
reddish brown except for the median, basal mark; on D. triton 
the abdomen above bears several pairs of small, white spots arranged 
in lines. The femora of the legs of D. striatus are conspicu- 
ously marked above with longitudinal stripes, characters lacking in 
D. triton. The median lobe of the epigynum in D. striatus 
extends to the anterior margin and the median extensions of the lat- 
eral lobes are contiguous behind; in D. triton the median lobe is 
confined to the posterior half of the epigynum and the lateral lobes 
are not in contact behind. D. striatus is one-third smaller than 
Det ton Abbe specinenm icine d Mma Mime tT comun (liaise Contne 
Acad., 1909, 14:210, pl. 7, fig. 6) is apparently this species. 
Habits.' Nothing has been written concerning the habits of this 
species but it is likely they do not differ greatly from D. triton 
in view of the fact that it has been mistaken for that species. The 
scopulate metatarsi and tarsi indicate that it, like other members of 
the genus, is in the habit of running on the surface of the water. 
A female with egg sac was collected at Bay St George, Newfound- 
land, in July; other mature females from Pine island, New York, 
September 8th. 
1QOn September 3, 1923, a female D. striatus and recently hatched 
young were found in a nursey web attached to grass and weed tops in a 
swale near Kinderhook, N. Y. The nursery resembled that of Dolomedes 
triton or some of the late season webs of Pisaurina mira. The egg 
sac was comparatively small, about three eighths of an inch in diameter, and 
attached to one side of the mass of entangled weeds and grass. 
