2/6 FRANK H. PIKE. 



I wish to acknowledge the help received from the sources indi- 

 cated in the bibliography. I am under obligations to Professor 

 Kigenmann and to Dr. W. J. Moenkhaus for many suggestions 

 and aid in completing the work. Professor Donaldson and Dr. 

 Hatai of the University of Chicago have given valuable sug- 

 gestions. 



ZOOLOGICAL LABORATORY, 



INDIANA UNIVERSITY, August, 1904. 



BIBLIOGRAPHY. 



Only a partial list is given here. A more complete list is given by Parker, '95. 



Carriere, J. 



'85 Die Sehorgane der Thiere vergleichend-anatomisch dargestellt. 



Eigentnann, C. H. 



'03 The Freshwater Fishes of Southwestern Cuba. Bulletin U. S. Fish Com- 

 mission, 1902, pp. 211-236. 



Hay, W. P. 



'03 On a Small Collection of Crustaceans from the Island of Cuba. Proceedings 

 U. S. National Museum, Vol. XXVI., pp. 429-435. 



Parker, G H. 



'90 The Histology and Development of the Eye in the Lobster. Bull. Mus. 



Comp. Zool. at Harvard College, Vol. XX., No. I. 

 '90 The Eyes of Blind Crayfishes. Bull. Mus. Comp. Zool. at Harvard Col. 



lege, Vol. XX., No 5. 

 '95 The Retina and Optic Ganglia in Decapods, especially in Astacus. Mittheil. 



aus der Zoiil. Station Zu Neapel, 12 Band. 



Seaton, Frances. 



'03 The Compound Eyes of Machilis. Am. Naturalist, Vol. XXXVII., pp. 



3I9- 



