OX A NEW ECHIUROID. 



6 7 



given. Moreover, he could not discover any parasitic male in his 

 specimen. Thus, the identification of his specimen with Hamingia 

 had been based entirely on external characters. It therefore seems 

 to admit of a doubt if Sluiter's description can be considered to be 

 sufficient to establish a distinct species upon it. 



The most conspicuous point of difference shown by the females of 

 Hamingia arctica and of the present species, is in the structure 

 of the anal glands ; namely, the number of the main canals, the pre- 

 sence or absence of vesicular portions, and the mode of arrangement 

 of the funnels. 



Lastly as to the specific distinction of the male individuals of the 

 present species, no special mentioning may be needed ; they are charac- 

 terized by the absence of ventral hooks, by the highly degenerated 

 intestine, and by the extremely long spermatic reservoir. 



The Zoological Laboratory, Normal College, Hiroshima. 

 September, 1908. 



