THE MUSEUM. 



Murtx Beyiiis, 

 from Pamima. 

 Comcaoaly calle 

 "Rose Murex." 



Cyprcfa Arabica. 

 "Ai'abiau Cow- 

 ry " from Am- 

 boina 



Vi^luta vesperlitio. 

 The cominiinest 

 Volute from Sin- "^ 

 gapore. 



Ealiolis 

 ished 



tube. 

 Sli 



tculalii. 

 lowiijg a 



The "White Ear," pol- 

 beautiful White Pearl. 



Hnlioli. 

 ofte 



[rin. 

 11 eal 



Calif, 

 led ••Bill 



Young Shell, poli.sluu 

 e Ear," very showy. 



Murex prmceps. 

 the "Pink iVIur- ; 

 e.^" from Pana- 

 ma. 



C't/pnra Tigris,the 

 Tiger Cowry 

 from Australia. 



Mother of Pearl. Considered one of the fin- 

 est of Pearl Shells. The ones showing 

 black when polished are frequently called 

 "Black Scotch." 



Black-crowned Night-Heron. 



{Nycticorax notvius.) 



BY F. HENRY YORKE M. D. 



The black-crowned Night-Heron, is 

 not virtually a night bird, as the name 

 implies, although nocturnal in its hab- 

 its in the south, and during its Spring 

 and Fall migrations; for dating from 

 its arrival in Illinois, about the last 

 week in April, when it commences 

 nesting.laying and setting, it is frequent- 

 ly observed during the day, especially 

 during cloudy weather, drifting off in 

 pairs, or three or four together in a 

 string, to ponds or marshes adjacent 

 to its nesting colony; especially is this 

 the case whilst feeding the young, 



