28 I. IJIMA : HEXACTINELLIDA. I. 



Mr. OwsTON bad made persevering eflbrts, long in vain, to 

 secure a specimen of this Gasteropod and liad caused circulars, 

 containing pictures of it and ofters of tempting rewards, to be 

 widely distributed among the tishermen in general. One day in 

 1894, KuMA again incidentally angled a large and beautiful 

 snail, which he thought might prove to be the one that the 

 Yokohsima naturalist and no less the Sci. Coll. IMuseum were in 

 want of. It had swallowed the dabo-line hook baited with cuttle- 

 iish. He brought it to us and returned home very handsomely 

 renumerated for his trouble. Thenceforth Pleurolomaria beyrichi, 

 till then without a Japanese name, began to go among the Misaki 

 dabo-liners under the title of ' Choja-gai,' or the ' Millionaire 

 Shell.' JMr. Owstox now knew precisely the particular kind of 

 fishermen to whom lie could direct his circulars with some pro- 

 bability of success. He acted accordingly and the result was 

 that ere long he became the happy possessor of several 

 ' Millionaire Shells.' 



I think I have said enough to show that the dabo-line — in 

 fact all the so-called long-lines, provided they are sufiiciently strong 

 but not unwieldy — can be of immense service to zoologists. The 

 fact that a number of valuable specimens had been obtained in- 

 cidentally by a similar kind of fishing arrangement in other parts 

 of the world has long stood on the records. For instance we 

 learn from Barboza du Bocage ('65 & '70) and Percival 

 Wright ('68) that the first Hexactinellids that became known 

 from the Portuguese coast {Hyalonema lusitanicum, Pheronema 

 carpenteri) were taken by fishermen while shark-fishing by means 

 of a rope in length some 600 fathoms, 30 or 40 fathoms of 

 which had fastened to it a series of snoods and baited hooks. 

 AVhen tlie Portuguese fishermen bring up Hyalonema, as they 



