558 HARVEST-SPIDERS OF OHIO WEED. 



distant rows on its dorsal and lateral surfaces; tibia with its inner 

 lateral distal an <>le slightly swollen, not projecting forward as does that 

 of the ]>at('lla, but fiirnisluMl with a similar brush of hairs; outer ventro- 

 lateral surface with a subobsolete row of white tubercles, tipped with 

 spinous hairs; dorsal and outer hiteral surface furnished with sparse 

 short hairs; tarsus thickly covered with long, black, recurved hairs, 

 usually with a I'ow of subobsolete, short, black tubercles on its iuuer 

 ventrolateral surface, and terminating in a moderately robust simi)h' 

 claw. Yentrum light grayish brown, hispid. Legs short, robust; 

 C(>xa' light gray, co\"ered with spinous hairs ou elevated bases; tro- 

 chanters light brown or grayish, tuberculate; remaining joints mottled 

 with blackish brown and gray; all excei)t tarsi with longitudinal rows 

 of small black spines, ;ni(l acute tubercles on their dorsodistid Ixtrders; 

 tibiae angular; tarsi hairy. Sheath of genital organ enlarged distally, 

 truncate; shaft moderately robust, distally <'analiculate, tlicn expanded 

 into a spoon-slijipcd portion, and terminating in a short, black, acute, 

 articulated piece. 



Female. — Bod^- larger and more robust; besides which it also differs 

 from the male in having no tubercles on the mandibles. Ajusal joints 

 of ovipositor grayish. 



Ohio: Franklin ('ounty, Fulton County, August, 181)0; Fairfield 

 County, Septend)er 20, 1890. 



Mitopus ohioensis Weed. 

 (Plate Lxviii.) 

 Olif/olophus f)/i/rteH.s(.s-. Weed, Aiiier. Nat., xxiv, 1103. 



Female. — Body, O""" long, 3..")""' wide. Legs: first, 8""" ; second, 20'""" ; 

 third, 15"""; fourth, 10""". 



Dorsum of a j)eculiar glossy gray, central marking indistinct, shown 

 mostlj'^ by stripes at outer margin; beginning at anterior lateral angles 

 of ccphalothorax two faint blackish stripes run oblicpicly back and 

 toward the middle of the anterior border of the abdomen (ibiiuing a 

 truncate V) and then run nearly parallel to each other two thirds of 

 the way to the ])osteiior extremity, although they are nearly obsolete 

 on the anterior third of the abdomen. Dorsum of ccphalothorax free 

 from tubercles except on margins, but having many minute brownish 

 granules. Dorsum of abdomen with numerous, very minute jtits scat- 

 tered over its entire suriace; and an indistinct transverse row of small 

 whitish tubercles, tipped with very minute dark spines on each vseg- 

 ment. Division between the cephalothoiax and abd()men almost obso- 

 lete, and segmentation of anterior abdominal segments wholly so. 

 Cephalic margin of cei)halothorax nearly straight; lateral angles 

 slightly produced, each having a small black spine; three ])rominent, 

 acute, grayish tubercles on middle of anterior margin, each tipped with 

 a minute black spine, the middle one l)eing nearly twice as large as 



