Of course thnse are not the only fishes which have poison spines. The 

 Japanese names gifen are taken from Tanaka's paper in the Proceedings of the 

 College of Scienf;e, and in the preparation of this manuscript Mr. Shigeho 

 Tanaka assisted che vrriter by the loan of valuable source material and by 

 checking the norrsnclature used. Thanks are hereby expressed for these kind- 

 nesses. 



Literature 



♦Bottard, A., Les poissons veniraeux. Contribution a I'hygiene navale. Paris 

 1889 



Boulenger, Fishes Ascidians Etc. 1910 



»Coutiere, Poissons •senimeux et poifsons veneneux Paris 1899 

 Gunther, Study of fishes 1880 



Parker, '.M., Poison gland of Trachinus draco . P.Z.S. 1888 



Pawlowf<y. E. Zur Kenntniss der Giftdrusen von Scorpaena porcua and Trachinus 

 drecj. Travaux de la Societe Imp. dea Naturalistes de St. Petersburg Bd. 

 jrjai 1906 



. Zur Anatomie der Epidermis und ihrer Driisen bei giftigen Fischen. 



" ibid XXXVIII 1907 



. Ein Beiti^g zur Kenntniss dec Baues der Giftdnisen einiger 

 Scorpaeniden. Zool. Jahrb. Apt. f. Anat. u. Ont. d, Tiore, 1911 

 'illace, L. The structure and development of the axillary glands of Batrachus. 

 Journ. of Morphology. Vol. VIII. 1892 



Indicobes works which could not be consulted in the original text. 



Description of Figures 



Fi7ire 1 Cross-section of a fin spine X60 



F-'.jure 2 Poison gland cut at right angles to the long axis of the cells of 



the gland X350 

 igure 3 Cross-section of poison gland X350 

 i'"igiire 4, Longitudinal section of fin epine showing how the poison issue from 



the ruptured tissues at the tip 



eg mucus gland cells in the skin 



cnt connective tissue 



dp where poison has flowed out of the raptured gland 



gb poison globules 



n nucleus 



pg poison gland cells 



pgm pigment cells 



sp spine 



V vacuoles 



221 



