JOURNAL 



OF 



MORPHOLOGY. 



EDITED BY 



C. O. WHITMAN, 



Professor of Animal Morphology, Clark University, Worcester, Mass. 



WITH THE CO-OPERATION OF 



EDWARD PHELPS ALLIS, Junr., 



Milwaukee. 



Q 



■4 



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a: 



Vol. V. 



Agent for Great Britain : 



W. P. COLLINS, 



/J7, Gt. Portland Street, 



London, IV. 



December, 1891. 



BOSTON, U.S.A.: 

 GINN & COMPANY. 



Agents for Germany : 



R. FRIEDLANDER & SOHN, 



Berlin, N. IV., 



Carlstrasse n. 



No. 3. 



Agent for France : 



JULES PEELMAN, 



i8g, Boulevard Saint- 



Germain, Paris. 



