234 E. A. ANDREWS. 



determined from alcoholic specimens, the anatomy of this new 

 Epigonichthys cultellus was the same as in Branchiostoma. No 

 enumeration of the muscle segments was made, but the character 

 of fins and the apparent median position of the anus were regarded 

 as of generic value. 



Subsequently Guenther (1O), in the only complete comparison of 

 all known forms of Amphioxus that has thus far been attempted, 

 was able to examine specimens of this new genus brought from 

 Thursday Island, Australia, by Dr. Copinger. Comparing these 

 with other Acraniata he referred them back to the genus Branchi- 

 ostoma. 



Moreover, Guenther now regarded the others as specifically 

 distinct, so that in this list of the Acraniates in the British Museum 

 we find the above form appearing as B. cultellum then B. lanceo- 

 latum from Europe and from the Atlantic Coast of North America, 

 B. elongatum from Peru (on the authority of Sundevall), B. Bel- 

 cheri of Gray, represented also by new specimens brought by Dr. 

 Copinger from Prince of Wales Island, Torres Straits, and finally 

 B. caribceum, which Van Beneden got in large numbers at the 

 Bay of Botafago and which furnished the material for Moreau's 

 study of the neural cord (possibly this is the same as Amphioxus 

 Mulleri of Kroyer's MSS.). 



In addition to these previously known forms this revision adds 

 a new one, B. bassanum, from Bass Straits ; this was formerly 

 regarded by Guenther as B. lanceolatum. Of these six species 

 five are represented by specimens in the British Museum. 



About this same date, 1884 or '85, as my friend Dr. S. Watase 

 informs me, Professor Matsubara of the Medical Department of 

 Tokio University read to the Zoological Society of Tokio an account 

 of an Amphioxus found at the island of Kinshin, in the western 

 part of Japan. 



Whether this is a new species or not remains to be seen. 



Earlier than that, in the winter of 1877-8, as appears from a 

 brief note by Professor Brooks (19), an assistant in the Smithsonian 

 Institution found some sort of Amphioxus at the Bermuda Islands. 



The knowledge of the distribution of Sundevall's Branchiostoma 

 caribceum was extended in 1891 by the discovery of small minia- 

 ture specimens swimming at the mouth of Kingston Harbor, 



