i889.] Entotnology, 1103 
ohioensis is proposed, both in general appearance and structural details, 
as will be seen by comparing Fig. 2 of Plate , which represents the 
structural characters of the new species, with Fig. 3 of the same plate, 
representing the structural details of O. picius. The description is as 
follows : 
Oligolopkus ohioensis, n. sp. Plate, Fig. i and 2. 
Body 6 mm. long ; 3.5 mm. wide. Legs : I., 8 mm. ; II., 20 mm. ; 
III., 15 mm.; IV., 10 mm. 
Dorsum of a peculiar glossy gray, very different from that of any 
other harvest-spider I have seen. Central marking indistinct, shown 
mostly by stripes at outer margins : beginning at anterior lateral 
angles of cephalothorax two faint blackish stripes run obliquely back 
and toward the middle to the anterior border of the abdomen (forming 
a truncate V) and^hen run parallel to each other two-thirds of the 
distance to the posterior extremity, although they are nearly obsolete 
on the anterior third of the abdomen. Dorsum of cephalothorax free 
from tubercles except on margins, but having many minute brownish 
granules. Dorsum of abdomen with numerous very minute pits scat- 
tered over its entire surface; and an indistinct transverse row of small 
whitish tubercles, tipped with very minute dark spines, on each seg- 
ment. Division between the cephalothorax and abdomen almost 
obsolete, and segmentation of anterior abdominal segments wholly so. 
Anterior margin of cephalothorax nearly straight; lateral angles 
slightly produced, each having a small black spine ; three prominent, 
acute, grayish tubercles on middle of anterior margin, each tipped 
with a minute black spine, the middle one being twice as large as 
those on the side, and also slightly in front of them. Eye eminence 
prominent, constricted at base; grayish, except a dark spot about 
each eye ; canaliculate, and having on each carina a row of four 
prominent conical, grayish tubercles, each termmatmg m a mmute 
black spine ; eyes small. Mandibles light br"wn, claws tipped with 
black ; dorsal surface of second joint furnished short black hairs. 
Palpi mottled : ventral surface of femur with numerous white, elon- 
gate-conical tubercles, each tipped with a prominent black spme; 
dorsal surface furnished with numerous ])lack sp.nosc hairs, many of 
which are tipped with white. Patella short, with its inner lateral dis- 
tal angle much prolonged (almost equalling the patella in length), the 
whole inner lateral surface being thickly set with strong spines, which 
are black tipped with white ; a few smaller spines on its dorsal surface. 
