738 



THE AMEBIC AN NATURALIST 



[Vol. XLVI 



Notes on the spawning habits of the brook lamprey {Petro- 

 myson 11 ) Trans. N. Y. Acad. Sci., XVI, pp. 321-324, 

 PI. XXVII. 



Detailed observations on manner of building nest, on copula- 

 ion, and general behavior. Contains the best figure extant of 

 ampreys on nest. 



A female sea lamprey, taken by a fisherman while clinging to 

 his boat, was opened, and its ova put into a large basin. It 

 rained at the time and the basin became partly filled with water. 

 After twenty days the eggs hatched into perfect larvae. Ferry 

 concludes: "II resort de ce fait que les ceufs pris dans le ventre 

 de la Lamproie etaient deja fecondes et avaient du l'etre dans 

 1 'interior de ranimal" (p. 722). 

 Gage, Simon H., and Meek, Seth E. 



1886. The lampreys of Cayuga Lake (abstract). Proc. Amer. Assoc. 

 Adv. Sci., XXXV, p. 269. 



Brief reference to nests and to length of breeding season, 

 which is said to last nearly two months (May and June). 



1893. The lake and brook lampreys of New York, especially those 

 of Cayuga and Seneca Lakes. The Wilder Quarter-Century 

 Book. Ithaca. Pp. 421-493, Pis. I-VII. 



Gives extended account of nest building and spawning of the 

 brook lamprey (Lampetra wilderi) and of the lake lamprey 

 (Petromyson marinus unicolor) ■ discusses fate of lampreys 

 after spawning (pp. 441-447). Figures two lake lampreys on a 

 nest, carrying stones PI. vii, Fig. 39. 

 Herfort, Karl. 



1901. Die Reifung und Befruchtung des Eies von Petromyson fluvia- 

 tilis. Arch. f. mxkroslc. Anat. u. EntwicM., Vol. 57, pp. 54- 

 95, Pis. iv-vi. 



Brief review of some European papers on spawning habits 

 (pp. 55-57). For his own studies he fertilized the eggs arti- 

 ficially (pp. 57-58). 

 Holder, Charles Frederick. 



1885. The lamprey-eel and nest. In Marvels of Animal Life; 8°; New 

 York; pp. 5-8. 



Describes how Petromyson marinus transports stones, but mis- 

 takes the mass of stones accumulated outside the nest, for the 

 nest itself. Quotes from an account of over fifty lampreys build- 

 Maine. They dropped the 



il it became covered over. This i 

 nean that the lampreys had built the dam 

 carried by two lampreys. 



