PROCEEDINCS 



OF THE 



WASHINGTON ACADEMY OF SCIENCES 



Vol. IV, pp. 533-548. [Plates xxxii-xxxiv.] September 30, 1902. 



THE EYES OF RHINEURA FLORIDANA. 



By Carl H. Eigenmann. 



Professor of Zoology, Indiana University, 



CONTENTS. 



Introduction 533 



Habits of Rhineura 534 



General Account of the Eye 535 



Minute Anatomy of the Eye 537 



(a) The iris 537 



{b) The vitreous body 538 



(c) The lens 538 



{d) The retina 538 



Conclusions 540 



Acknowledgments 541 



Bibliography 541 



INTRODUCTION. 



This paper is the fourth of a series on the Eyes of Blind 

 Vertebrates of North America, and the forty-third contribution 

 on zoological topics emanating from the Zoological Laboratory 

 of Indiana University. It is one of the reports of a committee 

 of the American Association for the Advancement of Science 

 on the Investigation of the Cave Fauna of North America, a 

 committee of which Theo. N. Gill is chairman, the author se- 

 cretary, and A. S. Packard, C. O. Whitman, S. H. Gage, 

 and H. C. Bumpus, the other members. The researches on 

 which this report is based were assisted by grants from the 

 American Association for the Advancement of Science. The 

 three preceding reports on this subject are as follows : 



Proc. Wash. Acad. Sci., Sept., 1902. 533 



