264 CLAREXCE M. WEED. 



An account of the synonymy and variation of this species will be 

 found in the "American Naturalist" for November, 18U2. Some 

 of the figures on the plates following refer to the southern form of 

 the species, but the two forms are [)ractically identical, except in 

 size. 



Liiobunum ventricosiim (Wood) Weed. Trans. Am. Ent. Soc. xix, pi. v. 

 Phalangimn ventriccsnm Wood, Coram. Essex Inst., vol. vi, pp. 32-33, 39, fig. 7. 

 Liobunum ventricosum (Wood). Weed, Amer. Nat. vol. xxiv, p. 918. 

 Phalangiitm formosnm Wood, Comm. Essex Inst, vi, p. 30. 

 Liobimum {f ) formosum (Wood). Weed, Am. Nat. sxi, p. 935; Bull. 111. State 



Lab. Nat. Hist. iii. p. 91. 

 For besium formosum (Wood). Weed, Am. Nat. xxiv, p. 916. 

 Liobumim ventricosum (Wood). Weed, Amer. Nat. xxvi, p. 786. 



Male. — Body 5.8 mm. long; 3.5 mm. wide; palpi 4.5 mm. long. Legs: first, 24 

 mm. ; second, 46 mm. ; third, 24 mm. ; fourth, 38 mm. Body elongate ; abdomen 

 conical or pear-shaped. Dorsum, legs, including trochanters and palpi, varying 

 from dark cinuamon-brown to ferruginous brown, most commonly cinnamon 

 rufous. Ventrum light grayish brown. Dorsum closely granulate with an in- 

 distinct darker marking, and numerous small grayish spots arranged in irregular 

 transverse series. Eye eminence black, except at base ; rounded, not canaliculate 

 smooth, or with a few small, acute tubercles. Palpi rather slender, with none 

 of the angles prolonged; femur with a very few small spinous tubercles and 

 hairs; patella strongly, and femur and tibia slightly arched ; coxae minutely tu- 

 berculate, tipped with white; trochanters and legs cinnamon rufous; tarsi 

 dusky. Legs long and moderately robust. Genital organ of male "flat, nearly 

 straight, slender at the basal portion, gradually widening and distally rather 

 quickly expanded into a broad alate portion, and then abruptly contracted into 

 a moderately robust, slightly curved point, which is placed at' an angle to the 

 rest of the shaft; at the base of the point a marked notch in the end of the 

 shaft." (Wood) 



Female. — Differs from male in having a larger and more swollen body. 



We have taken adults of this form at Hanover several times du- 

 ring early Summer, and Mr. F. W. Howe has presented a pair col- 

 lected at Dover. The latter have much larger bodies and longer 

 legs than the Hanover forms. 



The young of this species was described by Wood as Phalanglum 

 formosum, and was later referred by myself to the genus Forheskim. 

 The young occur during fall and early Spring, hibernating under 

 boards or other shelter. They become mature early in June, ap- 

 parently depositing eggs during June or July. I found a very young 

 specimen that appeared to belong to this species among the fallen 

 leaves in the woods at Pompanoosuc, Vt., Aug. 13, 1892. 



This immature form, as it occurs in Spring shortly before maturity, 

 is represented at fig. 1, and is described as follows : 



