1912.] • NATURAL SCIENCES OF PHILADELPHIA. 561 



rooms now occupied, a general survey was made of the collection 

 and additional untrustworthy boxes removed. Many boxes were 

 treated with melted naphthalin. This was done wherever infesta- 

 tion was found. In the Lepidoptera the rearrangement of the 

 micro-moths has been completed, although there are still some speci- 

 mens awaiting' identification. The genus Ornithoptera has been re- 

 arranged in its entirety. Additional cabinet space is needed for the 

 exotic collection. 



The collection of American diurnal Lepidoptera is in excellent 

 condition and material is constantly being added. 



Mr. E. T. Cresson has numbered and listed all the types of his 

 species in the order Hymenoptera preparatory to publishing them. 



A number of species have been added to the collection of Hemip- 

 tera and some material has been determined. 



The exotic Coleoptera have been partially rearranged. The fami- 

 lies- have been labelled and material incorporated. 



The North American collection, well into the family Carabidse, 

 and some of the smaller families which were badly crowded have; 

 also been rearranged. Many species, with accurate data, have been 

 added to the collection and the duplicates put in order under family 

 labels. 



In the Diptera there has been considerable rearrangement ; 

 material has been added and species named. 



Dr. Philip P. Calvert has continued his charge of the collection of 

 Odonata and the work accomplished is credited to him. It is hoped 

 ere long to obtain enough of the new type of boxes to provide for 

 this important collection. The arrangement of the studied exotic 

 series of Orthoptera, as well as a similar revision of the North Amer- 

 ican series, was completed during the year. The previously unar- 

 ranged series of the same collection has also been completed. At the 

 present time, as far as studied, the Orthoptera collections are well 

 arranged and readily accessible, but during the coming year the ex- 

 otic series will need considerable extension, owing to large additions 

 to that series which will have to be installed. Mr. Morgan Hebard 

 has deposited his entire collection of Orthoptera, including the Bruner 

 North American types, in the Academy building, thus making the 

 collections of the order in one room in the Academy the most exten- 

 sive in America. 



During the year the most important additions received have been 

 the series retained by the Academy from the Mecklenburg Central 

 African collection; a series from Venezuela purchased by the Academy: 



