144 A - C - EYCLESHYMER AND J. M. WILSON. 



to plants or other fixed bodies. They function as secreting 

 organs till they sink below the epidermis. 



The organs reach the highest stage of their development just 

 after hatching. They are functional for about a week and dis- 

 appear in two or three weeks. The mode of disappearance is 

 probably by cytolysis. 



LITERATURE. 

 Agassiz, Alexander. 



'78 The Development of Lepidosteus. Proc. Am. Acad. Arts and Sc. Boston, 

 Vol. 13, p. 65-76. 

 Balfour, F. M. 



'85 Treatise on Comparative Embryology. London, Vol. 2, p. 108, footnote. 

 Balfour, F. M., and Parker, W. N. 



'82 On the structure and development of Lepidosteus. Phil. Tr. London, Vol. 

 175. PP- 359-442. 

 Dean, Bashford. 



'96 On the larval development of Amia calva. Zool. Jahrb. Abt. f. Syst, Vol. 

 9, pp. 639-672, Taf. 9-1 1. 

 Ehrenbaum, Ernst. 



'94 Beitrage zur Naturgeschichte einiger Elbfische (Stor). Wiss. Meeresunter- 

 such., Bd. 1, Heft. 1, Kiel und Leipzig. 

 Eycleshymer, A. C, and Wilson, J. M. 



'06 The gastrulation and embryo formation in Amia calva. Am. Jour. Anat., 

 Vol. 5, pp. 133-162, 4 pi. 

 Kupfer, C. von. 



'93 Studien zur vergleichenden Entwicklungsgeschichte des Kopfes. Heft I. 

 Die Entwicklung des Kopfes von Acipenser Sturio. Miinchen. 

 Phelps, Jessie. 



'99 The development of the adhesive organs of Amia. Science, N. S., Vol. 9, 

 p. 366. 

 Salensky, W. 



'82 Recherches sur le developpement du Sterlet (Acipenser ruthenus). Archives 

 de Biol., Tome 2. 

 Ziegler, EL E. 

 '02 Lehrbuch der vergleichenden Entwickelungsgeschichte der niederen Wirbel- 

 tiere, Jena. 



ABBREVIATIONS. 



