454 ON CEUSTACEA CHIEFLY FEOM THE INLAND SEA OE JAPAN. 



ADDITIONAL NOTES. 



A. 



(Page 418.) According to Lenz's paper in Spengel's Zool. Jalirb., Syst. xiv. 1901, p. 429, Bare 

 Island should be situated between Vancouver Island and the continent ; afterwards, however, Prof. Lenz 

 informed me that thi.s very small island is situated close to the east coast of the northern island of New 

 Zealand, between lat. 40° and Cape Kidnappers. 



B. 



(Page 436.) Pen.eus tenellus. The thoracic legs seem to be devoid of epipodites, and the exopodite 

 of the fifth pair is rudimentary or wanting. Parapeneopsis acclivirostris, Alcock, has a longer rostrum, 

 recurved at the tip, the thelyeum different, and the antennular flagella are shorter. 



c. 



(Page 441.) Potamox spinescens. The fingers of the smaller cheliped are also, in these adult males, 

 distinctly spoon-shaped, excavated at the tips, but those of the larger leg show a tendency to lose 

 this spoon-like shape, the fingers appearing obtuse at their tips. Whereas the fingers of the smaller 

 cheliped still shut nearly close together, those of the larger become gradually more gaping, and in the 

 largest specimen the dactylus is strongly arched and there is a larffe interspace between both fingers; 

 the excavation of the tips of the fingers has become quite indistinct, though it is still perceptible. 

 The larger chela of this male is just as long as the cephalothorax is broad ; the palm, measured horizon- 

 tally, appears once and half as long as the fingers, and the height of the palm near the articulation of 

 the dactylus is equal to the horizontal length of the fingers. Palm and fingers are quite smooth ; the 

 dactylus carries 12 or 13 obtuse teeth of different size, of which the first, near the base, is larger thau 

 the rest ; the immobile finger is also armed with some obtuse, unequal teeth. 



The chelipeds are yellow, but the upper surface of the carpus, the upper border of the palm and of 

 the dactylus, as also the upper end of the arm, are of a beautiful red. 



[I2t7i February, 1907.] 



