36 Annals of the Carnegie Museum. 



now numbers about six thousand seven hundred species, represented 

 by about thirty thousand sets of specimens. 



About sixteen thousand insects were obtained mainly from South 

 America and tropical Africa. The Director completed for the American 

 Museum of Natural History an extensive paper upon the lepidoptera 

 of the Congo brought back from that country by the Lang-Chapin 

 Expedition. A number of new species and new varieties are described. 

 There are over a million of insects in our collections, representing 

 approximately one hundred thousand species. 



The work in the Herbarium was largely restricted during the past 

 year to the classification and arrangement of material acquired in 

 former years, but some important accessions were made by purchase and 

 exchange. A very important paper upon the Oligocene fossil plants 

 collected some years ago by Mr. Earl Douglas near Missoula, Mon- 

 tana, has been prepared by Professor O. E. Jennings, and submitted 

 for publication. Dr. Jennings informs me that there are about two 

 hundred and fifty thousand specimens in the herbarium, representing 

 approximately fifty-five thousand species. 



Nearly one thousand mineralogical specimens were received during 

 the year, principally as gifts, including that of the Andriessen Col- 

 lection, presented to the Museum by Mr. Richard Hartje, Jr., and the 

 collection made by the late Mr. E. L. Dunbar of Pittsburgh, pre- 

 sented by his daughter. Miss Fannie K. Dunbar. Our collection of 

 minerals is one of the largest in the state. 



In the field of paleontology important work was done at the National 

 Dinosaur Monument in Utah, where Mr. Earl Douglass has continued 

 the work of excavation commenced some years ago. The force in the 

 laboratory has succeeded in freeing from the matrix a great deal of 

 interesting and valuable material, which we hope to soon describe 

 and publish to the world. Some of it undoubtedly represents forms 

 hitherto unknown to science. Our paleontological collections are 

 very extensive, exceeded in size and importance by only one, or pos- 

 sibly two others in North America. 



One of our undertakings was the thorough exploration of the Indian 

 mound at Guyasuta, the ancestral home of the Darlington family 

 near the city, the Museum having been invited by Mrs. S. A. Amnion 

 and her sister, Miss Darlington, to do this work. It is a well-confirmed 

 tradition that the late General O'Hara caused the interment in this 

 mound of the remains of the celebrated Indian chief, Guyasuta, who 



