382 



A. TERAO : 



Note : A male specimen from Nago Bay, Okinawa (Loo-choos) in the collection of the 

 7th High School, Kagoshima. Contrary to Alcock's description, the lower border of 

 hand of the larger cheliped is not serrated, but is occupied by black spinules and 

 turberclcs which are densest along that border. Bristles are of a brownish carmine 

 colour ; crossbands absent. 



Genus Parapagurus Smith, sensu extenso. 



Parapagiiriis, Smith, Trans, Connect. Acad, v, 1879, p. 50 ; and 

 Bull. Mus. Comp. Zool. Harvard, x, 1882, p. 20; Henderson, Chal- 

 lenger Anomura, 1888, p. 85 ; Milne-Edward et Bouvier, Mem. Mus. 

 Comp. Zool. Harvard, XIV, no. 3, 1893, p. 26 ; and Hirondelle Crust., 

 Brachyures et Anomures, Monaco, 1894, p. 63 ; Stebbing, Hist. Crust., 

 1893, p. 166 ; Holmes, Synop. Calif. Stalk-eyed Crust., 1900, p. 55 ; 

 Alcock, Cat. Ind. Deep-Sea Crust., 1901, p. 216; and Cat. Ind. Dec. 

 Crust., pt. 2, fase. 1, 1905, p. 98. 



Sympagnrus, Smith, Proc. U. S. Nat. Mus., VI, 1883, p. 37 ; 

 Henderson, Challenger Anomura, 1888, p. 52 ; Milne-Edwards et 

 Bouvirer, Mem. Mus. Comp. Zool. Harvard, xiv, no. 3, 1893, p. 58 ; 

 and Bull. Soc. Zool. France, XXII, 1897, p. 131 ; and Crust. Dec. Hiron- 

 delle et Princesse-Alice, Monaco, 1899, pp. 55, 56; Stebbing, Hist. 

 Crust., 1893, p. 166 ; Ortmann, in Bronn's Thierreich, Malacostraca, 

 p. 1 145; Alcock, Cat. Ind. Deep-Sea Crust., 1901, p. 203; and Cat. 

 Ind. Dec. Crust., pt. 2, fase. 1, 1905, p. 103. 



Note: Smith separated Sympagtirus from Parapxgtirus merely on the ground that while in 

 the former the arrangement of gill-plates is biserial in the latter it is quadriseriaL 

 However, this distinction can not always be carried out with exactness, since in Sympa- 

 gurus nudus Milne-Edwards it is known that some gills have the plates quadriserially 

 arranged, though those forming the outer series on both sides are rudimentary. The 

 new species, which will soon be described under the name of Parapagurus ijimai, is 

 another example in which the gill-plates are in a way intermediate between being 

 biserial and quadriserial, in that the biserial gill-plates are each bifid at the distal end. 

 Under these circumstances it seems to rac advisable to reunite the two genera. 



Parapagurus diogenes (Whitelegge). 



Sympagnrus diogenes, Whitelegge, Mem. Aust. Mus., IV, pt. 2, 

 1900, p. 172, pi. xxxiv, fig. 3. 



