148 DAVEXPOKT ACADEMY OF NATUKAL SCIEXCES. 



human figure in a stooping posture, the features being exactly 

 similar to the features represented on tlie mound pottery of Mis- 

 souri. Over the head of the figure is represented a head-dress, 

 consisting of the skin of an animal, the hind legs and tail being 

 carved on the back. 



The importance of preserving specimens of the earth in which 

 bones are found was urged, as it may possibly lead to a rough 

 estimate of the age of the mounds, by comparison with a like 

 examination of the condition of bones in our older cemeteries. 



Miss Emma A. Smith, of Feoria, being requested to present 

 some entomological notes, gave an account of the nearly com- 

 plete defoliation of a large forest of oak trees in Illinois, ex- 

 tending from Elmira to the north of Kewanee, by a small leaf 

 roller moth, the Argyrolepia q-aercifoliana of Fitch. Speci- 

 mens of the moth and of its parasites were exhibited. 



Mr. J. D. Futnam stated that he had recently discovered a 

 new bark louse on the soft maple. It is small, less than one- 

 tenth of an inch long, and is covered with a circular elevated 

 scale, composed of concentric layers around the small reddish 

 larval scale, bearing considerable resemblance to the shells of 

 the genus Aiicylus — fresh water limpets. It belongs to the sec- 

 tion DiASPiDES of the family Coccid.e, and is found in abundance 

 on the same trees with Leccuiium acerlcola. 



Mr. W. H. Fratt presented the following report : 



On the Exploration of the Mounds on the Farm of Col. Wm. Allen. 



BY W. H. PRATT. 



Having, by the kindness of Mr. Wm. Allen, Jr., obtained the privilege 

 of making some explorations in the group of ancient mounds on the farm 

 of his father, the late Col. Wm. Allen, who was a member of the Acad- 

 emy, an examination was made on Monday, June 25th. Our party con- 

 sisted of Rev. J. Gass, Dr. C. H. Preston, T. G. Milsted, Thomas Far- 

 quharson, Chester L. Pratt and W. H. Pratt. 



DESCRIPTION. 



The group of mounds, originally six in number, is situated about six 

 miles down the river from Davenport, upon the extreme edge of the 

 bluff, which is very high at that point, about half a mile from the river, 

 and commanding one of the most extended and finest views to be had of 

 this portion of the Mississippi Valley. The position is a very prominent 

 one, and is distinctly visible from the city, though six miles distant. The 



