^'189^'] PROCEEDINGS OF THE NATIONAL MUSEUM. 545 



Liobuniim vittatuni (Say) Weed. 

 (Plato LVii, Figs. 1,2; Plate. LViii.) 



Phalanginm viffatiim Say, Jour. Phila. Acad., ii, 05; Wood, Comm. Essex Inst., vi, 



20; Underwood, Can. Eut., xvii, 168. 

 Liobiinuvi vitiatiim Weed, Am. Nat., xxi, 935; xxvi, 'JOi); I5u]l. 111. St. Lab. Nat. 



Hist., Ill, 85, 101 ; Psyche., vi, 420. 



Male. — Body 7""" long; 4' wide. Palpi 7""" long. Legs: first, 44'""' ; 



second, 89"'"'; third, 45"""; fourtli, 04'"'". 



Dorsum reddish-brown, with ii dark central marking, commencing 

 at eye eminence and extending backward to the ultimate or i)enulti- 

 mate abdominal segment. Contracting slightly near the anterior 

 margin ofal)domen, then gradually exi)anding until about the begin- 

 ning of the i)osterior third of the abdomen, where it again slightly 

 contracts. Ventrum slightly paler than dorsum, both finely granulate. 

 Eye eminence a little wider than high, Jtlack abo\e, canaliculate, with 

 small black tubercles over the eyes. Mandibles light yellowish-brown, 

 tips of claws black; second joint with short sparse hairs. Pali)i long, 

 reddish-brown; tarsal joints paler. Femur and patella arched; with 

 two rows of rather-blunt, dark tubercles on the outer ventrolateral 

 surface; femur also having a few small subobsolete ones on its dorsal 

 surface. Tibia with a similar row on its outer ventrolateral surface, 

 a s^iort row on the distal jiortion of its inner ventrolateral surface, and 

 a short row on the proximal jiortion of its ventral surface. Tarsus 

 pubescent, with a row of short, blunt, black tubercles on its inner 

 ventro-lateral surface, extending from tlic base to near the apex. Legs 

 black; coxse reddish-brown, minutely tuberculate; trochanters with 

 minute scattered tubercles; femora, and patelhe with rows of small 

 spines; tibiic with very short hairs. Shaft of genital organ slender, 

 subcylindrical, not broadened distally, but bent at an obtuse angle 

 and terminating in a very acute point. 



Female. — BodyS-!)""' hmg; 5-()'""' wide. Palpi 5"'"' long. Legs: first, 

 42"'"'; second, 90"""; third, 43"'"; fourtli, 61""". 



Besides its rounder body and much more robust appearance, it dif- 

 fers from the male as follows : Dorsum of a much darker shade of brown 

 with less of the reddish tint, and the ventrum paler. Second joint of 

 mandibles with fewer hairs. Palpi shorter, more slender, with the rows 

 of tubercles on the tibia subobsolete, and that on the tarsus entirely 

 wanting. Legs generally light-brown with black annulations at the 

 articulations. Ovii)ositor whitish, with no dark color in apical rings. 



Ohio: Lawrence, Angust, 1888; July, September, 1889; Warren, sum- 

 mer of 1889. 



This abundant species is commonly found in the extreme southern 

 counties of the State. It runs into the form described by Say as 

 rhalanfjixm clorsatum,now known as Liohunum vittaium dorsatum, and 



*Amer. Naturalist, xxvi, 1004, in an article discussing at some length the geo- 

 graphical variations of this spei^ies. 



Proc. N. M. 93 35 



