A JAPANESE HERMIT 165 
and its immediate neighbours by the possession of a con- 
spicuous appendage in the male at the fifth pair of legs, 
and distinguished from one another by the shape and 
Fie. 14.—Spiropagurus spiriger (de Haan), with separate figure of the fifth pair of feet 
carrying the spiral appendage. 
position of that appendage. They are alike in having the 
fourth pair of legs subchelate. 
Spiropagurus, Stimpson, 1858. The fifth leg of the 
male on the left side has at the base a more or less spirally 
twisted appendage (the protruded vas deferens). 
Catapagurus, A. Milne-Edwards, 1880. The fifth leg 
of the male on the right side has at the base an appendage 
curved in one plane round the right side of the pleon. 
Anapagurus, Henderson, 1886. ‘The fifth leg of the 
male on the left side has at the base an appendage which 
is short and curved, instead of long and coiled. 
That the distinguishing feature of Spiropagurus did not 
escape the notice of de Haan is clear from the descr iption, 
the figures, and the specific name of his Pagurus spuriger. 
This, which is the type species of Spiropagurus, is now 
found to be widely distributed in Eastern waters. 
