72 NEW YORK ZOOLOGICAL SOCIETY 



MICE AND RATS (MlLiidae) 



Unusual Color Phases of the Domestic Mouse Mus musculus 



Japanese Waltzing Mouse Mus musculus 



Black Rat Mus rattus 



Black-and- White Rat Mus 7iorivegicus 



Gray-and- White Rat Mus norwegicus 



Porcupine Mouse Acomys cahirinus 



Egyptian Gerbille Gerbillus 2njramidum 



Musk Rat Fiber zibethicus 



Cotton Rat Sigmodon hispidus 



JERBOAS (Dijwdidae) 



Greater Jerboa Dipus aegyptius 



COYPU AND SPINY RATS {Octodontidae) 



Coypu Rat Myocastor coypu 



Hutia : Cuban Tree Rat Capromys pilorides 



Short-Tailed Hutia Capromys browni 



PORCUPINES (Hystricidae) 



Canada Porcupine Erethizon dorsatus 



Brazilian Porcupine Sphingurus prehensilis 



African Porcupine Hystrix cristata 



VISCACHAS AND CHINCHILLAS (ChmchilUdae) 



Viscacha Lagostoma trichodactylus 



AGOUTIS (DasyprocUdae) 



Golden Agouti Dasyprocta agouti 



Gray Agouti Dasyprocta prymnolopha 



CAVIES (Caviidae) 



Domestic Cavj^ Cavia porcellus 



Capybara Hijdrochoerus capybara 



Patagonian Cavy DoUchotis patagonica 



THE INSECT COLLECTION 



Through the diligent efforts of Mr. Ditmars and Keeper 

 Charles Snyder, a collection of insects was formed and placed on 

 exhibition during the early summer of the past year. While this 

 first exhibit was not elaborate, it excited such interest that it was 

 decided to enlarge it, by taking advantage of the season which 

 then was at its best for insect collecting. Mr. Ditmars reports 

 upon this collection as follows : 



"A series of long shelves was built in the pavilion between 

 the Small-Mammal House and the Ostrich House, and thirty-five 

 glass-fronted cages, together with a row of aquaria for aquatic 

 specimens, were installed. A number of collecting trips were 



