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 C'oleoptera have been partially rearranged. The fami¬ 
lies have been labelled and material incorporated. 
The North American collection, well into the family C'arabidae, 
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 Dipt era 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. Air. Alorgan 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 Aleeklenburg Central 
African collection; a series from Venezuela purchased by the Academy; 
