52 MK. F. DAY ON THE 



Lump-sucker (Cyclopterus) is said to fix itself by its ventral sucker 

 to the neck of the savage Wolf-fish (Anarrhichas lupus), and 

 adheres thus immovably, tormenting it in such a manner as to 

 cause its death*. 



"When investigating the fishes at the Andaman Islands in 

 1870, one of the aborigines brought an example of the pretty 

 yellow-and-white banded AmpJiiprion percula ; and on being told 

 that it was good, observed that she could get numbers more. She 

 took us to an Actinia, which she detached from the coral rock by 

 inserting her hand behind the attachment of this polype ; and 

 on shaking it, two more of these little fish fell out. Subsequently 

 this was repeated to twelve others, and all had two living fishes 

 inside them except one, which had three. They asserted that 

 this was their usual abode. A few days previously Captain 

 Hamilton had observed to me that some little striped fishes lived 

 inside a polype at North Bay. One day he dug one out, dragged 

 it to the shore, and captured three little fish from its interior ; 

 replacing them in the sea, they appeared not to know what to do, 

 swimming round and round as if searching for something. The 

 living polype was now returned to the sea, and they at once swam 

 to it, following it as it was dragged back again through the water 

 to its original locality. As I was going over to North Bay fishing, 

 he came with me to see if he could not find a specimen. Unfor- 

 tunately, after discovering one and obtaining a fish from it (Am- 

 pJiiprion bifasciatwm), he was stung by the polype, which I 

 did not seef. Dr. Andrews J has observed upon the Holothuria, 

 or Trepang of the seas of China, that fish live inside it ; in 

 fact he saw instances of living fish entering the Trepang. On 

 the Coromandel coast of India at Gopaulpore I found the small 

 perciform Tlierapons residing inside Medusae, and which the fisher- 

 men asserted to be of common occurrence. Gill observes § : — 

 " In the eastern waters of the United States, however, so far as 

 I am aware, the Stromatoid fish JPoronotus similis (Stromateus 

 similis of some authors) seems to be the most common, if not the 

 only associate of several Acalephs, viz. Dactylometra quinquecirra, 

 Zygodactylon groenlandica, and Cyarea arctica. Under the um- 

 brellas of these species small Poronoti are to be found in the late 



* Shaw, Zool. iv. p. 96. 



t Day, " Obs. on the Anclamanese," Proc. As. Soc. Beng. 1870, p. 176. 



\ Meeting Brit. Assoc, Aug. 17th, 1878. 



§ Nature, Aug. 30th, 1877, p. 362. 



