42 



IWIHrri'JiNATES. Ch'rSTACI'JAXS AM) IXSPX'TS 



;)niin(ni lohstcr, also cnlar^icd models showinj^ heads of various 

 species of iiis<'ets. On the wall are the two largest 

 >))ecinieiis of lohslerlhat have <'\('r been taken. Thev 



Crustaceans 

 and Insects 



wcijihed when ali\-e 1 hiiM y-one and thirty-four pounds 



Marino Habitat Cinnip. A coiniimnity oi starhsiic 

 below the edge of a coral reef in the Bahamas. 



iiiciuoncs. sea urclim< and ^poimc-s as seen 



respectively. The laropst of the arthropods is the giant crab of Japan, 

 which, like that ])lace(l on the wall, may have a spread of about ten 

 feet. The main exhibit of insects is displayed on the third floor. 



The mollusks form a group second only to the arthropods in the 



\ast number and diversity of forms which it (unbraces, 

 Alcove 11 including marine, fresh-water and land animals. All 



Mollusks mollusks have soft bodies, but nearly all of them secrete 



Models of '^ shell which in many s])eci(\s is of ])early mat(*rial (mother- 



Clam and "t jx'arl!. Well-known exam])les of this grou]) are the 



Oyster common clam and oyster and enlarged models in the 



center case show the anatomy of thesc^ s])(M'ies. A large 

 collection of mollusks is shown on the third floor. 



