250 



Bashford Dean Memorial Volume 



herein as Figure 1, plate I. This figure was drawn half'si2;e from a fish measuring 1473 

 mm. (58 in.) long. This drawing shows a perfect tail (''measuring two feet''), whereas 

 Carman's first specimen lacked the distal part of this organ. 



Dean, in his "Fishes, Living and Fossil" (New York, 1895, page 87), reproduced 

 (in a line drawing in reversed right and left) Giinther's excellent figure. Of it Dean 

 wrote with his usual discernment: 



Chlamydoselache (Giinther's name] derives its great interest from its late discovery 

 (1884, Garman), rareness, and Pleuracanthid type of teeth; but now that it has been taken in 

 numbers — comparatively — in deep water [of Tokyo Bay 1, one is inclined to believe that 

 many of its 'primitive' characters, like its eel-like shape, may partly be due to its environ' 

 ment ; its resemblance, moreover, to the Pleuracanth has since been found to be of a superficial 

 character. 



Text-figure 2 



A female Chlamydoselachus with the eggs which have been cut out of her body. 



This figure has been carefully retouched to make the outlines clearer. 



After Nishikawa, 1898. 



Passing by Rose (1895), whose 340'mm. embryo was taken from the body of one of 

 Doderlein's fishes obtained at Tokyo in 1881, we come to Nishikawa (1898), who figured 

 (Text-figure 2 herein) a female specimen of Chlamydoselachus with about twelve eggs 

 taken from her body. He noted that this shark seemed to be confined to the Sea of Sagami, 

 but specific localities were not designated save that it was occasionally brought to the 

 Tokyo market from the east side of the Bay of Tokyo, and that it was sometimes (though 

 rarely) taken by the fishermen of Misaki. He specifically stated that he had seven female 

 fish with eggs and it would seem from the context that he had several other fish, either 

 non-gravid females or males. Goto, who edited Nishikawa's article, spoke of "a speci- 

 men brought some time ago to my laboratory." 



At this time Dean was in the full swing of his work on the morphology of the early 

 fossil fishes, and on the embryology of the Cyclostomes and Ganoids, primitive verte- 

 brates, for whose eggs and embryos he was searching far and wide. It seems to us prob- 



