59.51.21 : 14.8. 



CONTRIBUTIONS FROM THE ZOOLOGICAL LABORATORY Or I 'IE 



MUSEUM OF COMPARATIVE ZOOLOGY AT HARVARD 



COLLEGE. E. L. MARK, DIRECTOR. 



TH 1 : NERVOUS SYSTEM OF TUT; OKSTODE 

 MONE/UA EXPANSA. 



UC-NRLF 



B 3 3bO TSfi 



5v WILLIAM L TOWKU. 



T TTH S PLATKS. 



REPRINTED FROM ZOOU>GISCHK JAHp.ui : CHK' . AP.TH. F. ANAT. u. ONTOG. 

 BAND XIII. J'FKI 3. 



CAMBRIDGE, MAS., U.S.A. 



