VOL. XXXVII, NO. 436 



April. 1903 



THE 



AMERICAN 

 NATURALIST 



A MONTHLY JOURNAL 

 DEVOTED TO THE NATURAL SCIENCES 

 IN THEIR WIDEST SENSE 



CONTENTS 



Page 



I. On tho Appendage! of Tremataspis Frofeisor W. PATTEN 223 



II. Studies of Localised St&gea in 3cm* Plants of the Botanic Garden! of Harvard 

 University JGilPE A. CUSHJIAN ?43 



HI. Notes on the Beproduetion of Certain Reptiles . . . . 3. 8. BBTNLEY 261 

 IV. Synopsis of North American Invertebrates. XYin. The Amphipeda, 



3. J. HOLMES 267 



V. Publications Eecoived ..... 293 



BOSTON. U. S. A. 



GINN & COMPANY, PUBLISHERS 



