1913.] 
NATURAL SCIENCES OF PHILADELPHIA. 
705 
In the Coleoptera the exotic species from Cicindelidse to Scara- 
beidse have been transferred to the Ridings cabinets. All the named 
exotic species that were not incorporated have been added to the 
exotic collection. The Zimmerman collection, the Poey, Cuban 
collection and the Salle collection of Mexican species have all been 
labelled. 
In the North American series the rearrangement of the Carabidse 
and the Gyrinidae have been completed and the Hydrophilidse in 
part. 
The Horn types in Carabidse and Elateridse have been labelled; 
also the Curculionidse and some of the smaller families. 
The following families have also been rearranged: Rhinomaeeridse, 
Rhynchitidae, Attelabidse, Brysopidse, Otiorhynchidae, Curculionidse, 
Brenthidse, Calandridse, Scolytidse, Anthribidse, Haliplidse, and 
Dytiscidse. 
More than a hundred species undetermined in the Horn collection 
have been named by specialists and incorporated. 
In the order Hymenoptera the family Chalcididse has been re¬ 
arranged. 
In the Diptera the Sapromyzidse and Agromyzidae have been 
determined and rearranged, and the Stratiomyidse, Culicidse, and 
Syriphidse have been put in better order. 
The Odonata have all been transferred to glass-topped drawers 
with the exception of some specimens on which studies are being 
made. 
The work on the order Orthoptera has been as follows: 
The North American and exotic collections of Dermaptera and 
Blattidse have been rearranged in the large glass-top boxes in which 
the whole collection of these orders will eventually be displayed. 
Some thousands of specimens from numerous exotic localities have 
been relaxed and mounted and in part permanently labelled, pre¬ 
paratory to study. The series of the genera Dichopetala, Insara, 
and Arethcea have been critically studied by Messrs. Rehn and 
Hebard, the latter spending a number of months monographically 
studying the North and Central American crickets of the genus 
Nemobius. To complete these studies, all the types in America 
and certain of those in European collections were examined by 
one or other of the authors. A faunistic paper on the Orthoptera 
of the Florida Keys and extreme Florida was prepared by the 
same workers, based wholly on material collected by the Hebard- 
Academv Expedition of 1912. Mr. Rehn has studied two extensive 
