1895.] NATURAL. SCIENCES OF PHILADELPHIA. 197 



The occurrence of the recently described Aegeon oriental is 

 Henderson, from tjhe litoral of the Burmese coast (Gulf of Marta- 

 bem) is remarkable, because this species is said to be related to the 

 Mediterranean Pontophilus cataphradus. It may, however, belong 

 to the genus Pontocaris, and the description and figure given by 

 Henderson do not refute this supposition. 



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