TJie Fhahmgiina' of Xorfh America. 101 



TAohnnnm dorsafuni, (Say). Weed, Bull. 111. St. Lab. 

 Nat. Hist., Vol. III., pp. 83-85 (1889). 



Elaborate deaoriptioa and measurements. Taken in northern and 

 central Illinois and Michigan. Developed largely in fields and woods, 

 and migrates to houses and barns. Commonest species in northern 

 Illinois. Compared with L. vittatuin, which is considered its southern 

 representative. 



2. LiOKUNUM YiTTATUM, (Say). 



Phalangium vittatum. Say, Jour. Phil. Acad. Nat. Sci., 

 Vol. II., p. 65 (1821). Complete Writings Vol. II., p. 13. 



Original description from specimens in the cabinet of the Academy. 

 " Inhabits the Southern States." 



Phalangium viitafum. Say. Wood, Commun. Essex Insti- 

 tute, Vol. VI., pp. 20-21, 39, figs. 2a~2d. (1868). 



Extended description and measurements. Taken in Texas and 

 Nebraska. Compared with P. dorsatam, which is supposed to be its 

 northern representative. 



Phalangium inttatum.^ Say. Underwood, Canadian Ento- 

 mologist, Vol. XVII., p. 168 (1885). 

 Bibliographical references. 



Liobnnum vittatttm, (Say), Weed, American Naturalist, 

 Vol. XXL, p. 935 (October, 1887). 



Referred from Phalangium of previous authors to Liohunum of C. 

 Koch, as defined by Simon. 



Liobunum' vittatum, (Say). Weed, Bull. 111. St. Lab. Nat. 

 Hist., Vol. III., pp. 85-87. (1889). 



Elal)orate description and measurements. Common in southern 

 Illinois where it frequents rocky ledges. Taken also in Kentucky 

 Compared with L. dorsatum, which it closely resembles, and of which it 

 is supposed to be the southern representative. 



3. LlOBUNUM NIGROPALPI, ( Wood). 



Phalangium nigropalpi. Wood, Commun. Essex Institute, 

 Vol. VI., pp. 22-23,' 39, figs. 3a-3c. (1868). 



Original description from specimens taken in woods in Huntingdon 

 Co., Penn. Males six times as numerous as females. 



Phalangium. nigropalpi^ Wood. Underwood, Canadian 

 Entomologist, Vol XVII., p. 168 (1885). 

 Bibliographical references. 



