CONTENTS OF VOL. II. 



rrefaco, v. 



Descriptions of several new species of North American 

 Insects, (from the Journal of the Academy of Natural 

 Sciences of Philadelphia, Vol. 1, No. 2, June, 1817 ; 

 pp. 19—23,) 1 



Some account of the insect known by the name of Hessian 

 Fly, and of a parasitic insect that feeds on it, (ibid. 

 Vol. 1, No. 3 ; 1817, pp: 45—48,) 4 



l)i!3oriptions of thcThysanouraj of the United States, (ibid. 



Vol. 2, 1821 ; pp. il— 14,) 7 



An account of the Arachuidcs of the United States, (ibid. 



Vol. 2, 1821 ; pp. 59—83,) ;» 



Descriptions of the Myriapoda; of the United States, (ibid. 



Vol. 2, 1821 ; pp. 102—114,) 24 



On a South American species of Oestrus which inhabits 

 the human body, (ibid. Vol. 2, part 2, 1822, pp. 353 — 

 360,) 32 



Descriptions of Dipterous Insects Qf the United States, 



(ibid. Vol. 3, 1823, pp. 9—54,) 38 



continuation, (ibid. Vol. 3, 1823, pp. 73—104,) G7 



l>cseriptions of Coleopterous Insects collected in the late 

 Kxpcdition to the Rocky Mountains, performed by 

 order of Mr. Calhoun, Secretary of War, under the 

 command of Major Long, (ibid. vol. 3, 1823, pp. 139 — 

 216,) 80 



continuation, (ibid. Vol. 3, 1824, pp. 238—282,) 139 



continuation, (ibid. Vol. 3, 1824, pp. 298—331,) 167 



continuation, (ibid. Vol. 3, 1824, pp. 403—462,) 187 



continuation, (ibid. Vol. 4, 1825, pp. 88—99,) 225 



I'escriptions of new Hemipterous Insects, collected in the 

 Expedition to the Ilocky Mountains, performed by 

 order of Mr. Calhoun, Secretary of AVar, under com- 

 mand of Major Long, (ibid. Vol. 4, 1825, pp.307— 345,) 2:)T 



