100 Illinois State Lahoratory of Natural History. 



1889. Weed, Clarence M. A Descriptive Catalogue of the 

 Phalangiinffi of Illinois. Bulletin Illinois State Lab- 

 oratory of Natural History, Vol. III., Article V,, pp. 

 79-97. 

 Extended descriptions of ten species, two being new. Notes on 



distribution, life history, and habits. 



REFERENCES TO SPECIES. 



1. LioBUNUM DORSATUM, (Say). 



Phalanginm dorsatiini. Say, Jour. Phil. Acad. Nat. Sci., 

 Vol. II., p. 66 (1821). Complete Writings, Vol. II., p. 13. 



Original descriptions fr m specimens in the cabinet of the Academy. 

 " Inhabits the United States." 



Phalanginm dorsatuin^ Say. Wood, Commun. Essex Insti- 

 tute, Vol. VI., pp. 18-19, 21, 39, figures la-lf. (1868). 



Extended descriptions and measurements of both sexes. Collected 

 in N. Y., D. C, and Penn. An out-door species. Supposed young are 

 whitish, ('ompared with P. riltalum, of which it is su))posed to be the 

 northern representative. 



Phalanginm dorsatnut. Say. Packard, Guide to the Study 

 of Insects, pp. 6,56-657, fig. 632 (1869). 



Mention of its distribution. Common at Salem. Mass. 



Phalanginm dorsatum,Siiy. Gratacap, American Natural- 

 ist, Vol. XVI., p. 120. 



Experiments on influence of oxygen on harvest-men. Specimens 

 placed in the nas were somewhat excited, and lived twenty-four hours. 



Phalanginm dorsal nm. Kitigsley, Standard Natural His- 

 tory, Vol. li., p. 122 (1884). 

 Mention. 



Phalanqium dorsatu)n, Say. Underwood, Canadian Ento- 

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

 Bibliograi)hical references. 



Liohunum dors((tnm^ (Say). Weed, American Naturalist, 

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



Referred from PlidldiKjiinn of |).evious authors to fAnhuniun of C. 

 Kocl), as deliued by Simon. 



