426 



PSYCHE. 



[April 1893. 



fourth pair of coxae, gradually enlarging 

 and obtusely truncate cephalad. Feet very 

 long and slender; tibia of the second pair 

 with a few false articulations. Palpal claw 

 denticulate. 



The three forms described below may 

 be distinguished as follows : — 



Body and legs cinnamon-brown. 



L. ventricosum hyemale. 



Eye eminence with a regular row of tubercles 

 over each eye ; dorsum with no black 

 marking in males, and indistinct one in 

 females. . . L. politum magnum. 



Eye eminence with very few tubercles; a 

 distinct black, longitudinal marking on 

 dorsum. . . . L. vittatum. 



Liobunum vittatum (Say). 

 The Striped Harvest-spider. Plates 11, 12. 



Phalangium vittatum. Say, Journ. Phila. 

 Acad., II, p. 65, 1821; Wood, Comm. Essex 

 Inst., VI, pp. 20-21. 



Liobunum vittatum. Weed, Amer. Nat. 

 XXI, p. 93s; XXVI, p. 999. 



Male. — Body 7 mm. long; 4 mm. wide. 

 Palpi 7 mm, long. Legs: first, 44 mm.; 

 second, 89 mm.; third, 45 mm.; fourth, 64 

 mm. 



Dorsum reddish-brown, with a dark central 

 marking, commencing at eye eminence and 

 extending backward to the ultimate or penul- 

 timate abdominal segment. Contracting 

 slightly near the anterior margin of abdomen, 

 then gradually expanding until about the 

 beginning of the posterior third of the ab- 

 domen, where it again slightly contracts. 

 Ventrum slightly paler than dorsum, both 

 finely granulate. Eye eminence a little wider 

 than high, black above, canaliculate, with 

 small black tubercles over the eyes. Man- 

 dibles light yellowish-brown, tips of claws 

 black ; second joint with short sparse hairs. 

 Palpi long, reddish-brown ; tarsal joints paler. 

 Femur and patella arched, with two rows of 

 rather blunt dark tubercles, on the outer 



ventro-lateral surface ; femur also having a 

 few small subobsolete ones on its dorsal 

 surface. Tibia with a similar row on its 

 outer ventro-lateral surface, a short row on 

 the distal portion of its inner ventro-lateral 

 surface, and a short row on the proximal 

 portion of its ventral surface. Tarsus pubes- 

 cent, with a row of short, blunt, black tuber- 

 cles on its inner ventro-lateral surface, 

 extending from the base to near the apex. 

 Legs varying from light brown to black, but 

 patella is generally black and tarsi brown, 

 the other joints varying. Coxae reddish- 

 brown, minutely tuberculate. Trochanters 

 generally dark brown with minute scattered 

 tubercles. Femora and patellae with rows 

 of small spines. Tibiae with very short 

 hairs. Shaft of genital organ slender, sub- 

 cylindrical, not broadened distally, but bent 

 at an obtuse angle and terminating in a very 

 acute point. 



Female. — Body 8-9 mm. long; 5-6 mm. 

 wide. Palpi 5 mm. long. Legs : first, 42 

 mm. ; second, 90 mm. ; third, 43 mm. ; fourth, 

 61 mm. 



Besides its rounder body and much more 

 robust appearance, it differs 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 en- 

 tirely wanting. Legs generally light brown 

 with black annulations at the articulations. 

 Ovipositor whitish with no dark color in 

 apical rings. 



This species in Central Mississippi 

 evidently passes the winter in the egg 

 state, the young hatching in March, 

 April and probably the early part of 

 May, becoming fully developed in July 

 and living until October or November. 

 Specimens taken during October are 

 very deeply colored. The collections 



