JAPANESE HERMIT-CRABS. 



379 



Willey's Exp., 1899, p. 425 ; Lanchester, P. Z. S., 1902, p. 364 ; 

 Alcock, Cat. Ind. Dec. Crust., pt. 2, fase. 1, 1905, p. 8l, pi. viii, 

 fig. I. 



Dardanus punctulatus, Rathbun, Proc. U. S. Nat. Mus., XXVI, 

 1902, p. 34. 



Dardanus megistos, Rathbun, Smiths. Misc. Coll., xlix, 1907, 

 p. 205. 



Pagurus megistos, Stebbing, Ann. S. Afr. Mus., VI, pt. iv, 1910, 

 P. 350- 



Note: Three males, one each from Ronin Islands, Yayeyama (Loo-choo Is.) and Iriomote- 

 jima (Loo-choo Is.) in the Sci. Coll. Mus. 



As in some other species, the right eyestalk is frequently somewhat shorter than the 

 left, the difference being sometimes so slight as to be scarcely noticeable. The larger 

 specimen from the Loo-choos has the inner border of ischium of the left cheliped not 

 crested but provided with a rcw of tubercles, varying in shape gradationally from the 

 simply rounded of those ptoximally situated to the somewhat pointed and dome-like of 

 the distalmost tubercle. 



Pagurus platythorax Stimpson. 



Pagurus platythorax, Stimpson, Proc. Acad. Nat. Sci. Philad., 

 1858, p. 246; and Smiths. Misc. Coll., XLIX, 1907, p. 206. 



Note : A female from Nago Bay (Okinawa, Loo-choos) and another female from near 

 Kisezaki in the same island are in the collection of the 7th High School in Kagoshima. 

 Three triramous abdominal appendages present, in which the outer ramus is apically 

 broadened and the middle ramus is the slendermost of all. 



Pagurus setifer Milne-Edward. 



Pagurus setifer, Milne-Edwards, (Ann. Sci. Nat., Zool., 2e sér., 

 VI, 1836, p, 274); and Hist. Nat. Crust., II, 1S37, p. 225; de Haan, 

 Faun. Japon., Crust., 1849, p. 209 ; Alcock, Cat. Ind. Dec. Crust., 

 pt. 2, fase. I, 1905, p. 83, pl. viii, fig. 3. Vide etiam de Man, Abh. 

 Senckenb. Nat. Ges., XXV, 1902, p. 739. 



Pagurus scidptipcs, Stimpson, Proc. Acad. Nat. Sci. Philad., 

 1858, p. 246 ; and Smiths. Misc. Coll., xlix, 1907, p. 205. 



Pagurus pavimentatus, Hilgendorf, (MB. k. Akad. Berlin, 1878, 

 p. 816, pi, iii, fig. 1-5). 



