1913.] NATURAL SCIENCES OF PHILADELPHIA. 705 



In the Coleoptera the exotic species from CicindeUdse 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 Gyrinidse have been completed and the Hydrophilidie 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 : Rhinomaceridae^ 

 Rhynchitidse, Attelabidae, Brysopidse, Otiorhynchidse, Curculionid8&, 

 Brenthidse, Calandridae, Scolytidae, 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 Chalcididae has been re- 

 arranged. 



In the Diptera the Sapromyzidae and Agromyzidce have been 

 determined and rearranged, and the Stratiomyidae, Culicidae, and 

 SyriphidsB 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 

 Blattidee 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- 

 Academy Expedition of 1912. Mr. Relm has studied two extensive 



