author's abstract of this ^aper issued 

 by the bibliographic service, march 28 



THE CHONDROCRANIUM OF SYNGNATHUS FUSCUS 



JA:MES ERNEST KINDRED 



Department of Histology and Embryology, School of Medicine, Western Reserve 



University 



FOURTEEN FIGURES 



CONTENTS 



Introduction 425 



Material and methods 426 



The chondrocranium of the 8-mm. stage 426 



A. The neurocranium 427 



B. The visceral arches 438 



The chondrocranium of the 12-mm. state 444 



A. The neurocranium 444 



B. The visceral arches 449 



Summary and conclusions 454 



INTRODUCTION 



The study of the chondrocranium of Syngnathus fuscus was 

 undertaken at the suggestion of Prof. J. S. Kingsley upon the 

 completion by the author of a monograph on the skull of 

 Amiurus. A detailed account of the facts of development of the 

 chondrocranium of Syngnathus had not as yet been given. 

 McJMurrich's ('83) paper, which contains a general description 

 of the development of the chondrocranium of Syngnathus 

 peckianus, has served as a basis for our knowledge of the cranium 

 of the Lophobranchii, the group of teleosts of which Syngnathus 

 is a representative. In order to add to the knowledge of the 

 cranial characters of this group, the following detailed topo- 

 graphical and histological description of the early stages in the 

 development of the chondrocranium of Syngnathus fuscus is 

 presented. 



It is the purpose of the author to describe in a subsequent 

 paper the later stages in the development of the chondrocranium 

 which lead to the formation of the adult skull. 



425 



JOURNAL OF MORPHOLOGY, VOL. 35, NO. 2 



