365 



The following are the marine zoogeographical areas of the 

 present geologic epoch, as given by I )rtinnnn | ' { .)(\, I., p. 66 ) : 



I. Littoral life-district. 



1. Arctic region. 2. [ndo-Pacific region. •*!. Wes1 

 American region. 4. East American region, 5. West 

 African region. 6. Antarctic region. 



II. Pelagic life-district. 



1. Arctic region. 2. Indo-Pacific region. -\. Atlantic 

 region. 4. Antarctic region. 



III., IV. Abyssal life-districts. 

 No regions distinguishable. 



LITERATURE. 



Agassiz, A., '88 — Three Cruises of the "Blake." 2 Vols. 

 (Bull. Mas. Comp. Zool., Vols. XIV.. XV.) 



Chamberlin, T. C, '98.— A Systematic Source of Evolution 

 of Provincial Faunas. (Jonrn. Geol., Vol. VI., p. 597. ) 



Chun, Carl, '86.— Ueber die geographische Verbreitung der 

 pelagisch lebenden Seethiere. (Zoolog. Anzeiger, Nr. 

 214, 215.) 



Chun, Carl '88.— Die pelagische Thierwelt in grosseren 

 Meerestiefen und ihre Beziehungen zu der Oberflachen- 

 Faima. (Bibliotheca Zoologica, Heft I.) 



Chun, Carl. '00.— Die pelagische Thierwelt in grossen Tiefen. 

 (Verhandl. d. Gesellschaft deutsch. Naturfr. und Aerzte. 

 Bremen, 1890.) 



Conn, H. IF., '85.— Marine Larvae and Their Relation to 

 Adults. (Stud. Biol. Lab.. Johns Hopkins I'niv.. Vol. 

 III., pp. 165-192, Pis. VI II. and IX. I 



Dall William H.. '00.— Deep Sea Molluscs and the Condi- 

 tion Under Which They Live. (Pres. Addr. Biol. Soc, 

 Wash. Proceed., Vol. V., pp. 1-27.) 



