140 



T. FUKUDA. 



i) The telson is only a little broader than long, whereas it is 

 twice as broad as long In Brook's specimens. 



ii) The fifth thoracic segment at least is exposed dorsally, where- 

 as this segment is completely covered by the carapace in his speci- 

 mens. 



iii) The antcro-lateral corners of the carapace arc somewhat 

 angular, while they are more rounded in his specimens. 



Locality. — One male and three females from Okinawa. 



2. Protosquilla brooksii de Alan. 

 Pl. IV., Figs, i, i a. 



Protosquilla brooksii dc Man, Arch. f. Naturg. 53. Jahrg. I 

 p. 579, Pl. XXII a, Fig. 8 (1887). 



Remarks. — In the present specimen the spinules on the last two 

 segments arc much more numerous than in the original specimens de- 

 scribed by de Man ; viz., there arc upon each of the submedian 

 tubercles of the sixth segment more than ten spinules, and upon each 

 of the lateral tubercles more than twenty spinules, whereas the origi- 

 nal specimens are recorded to possess only one or two spinules upon 

 the former and only one upon the latter. The anterior margin, instead 

 of being smooth, bears several spinules. The median tubercle on the 

 telson, the tip of which does not reach the base of the median notch, 

 is provided with about thirty spinules (about nine in the type-speci- 

 mens), and the lateral tubercles are each provided with about thirty 

 spinules (about ten in the type-specimens). Moreover, the inner lobe 

 of the posterior margin of telson is armed with nearly ten, instead of 

 two, and the lateral margin of the large triangular notch each with 

 eleven or twelve, instead of six, spinules. Lastly, more than twenty 

 spinules are present on the area between the lateral tubercle and the 

 outer margin, the latter being also beset with thirteen or fourteen 

 spinules, while in the type-specimens there are present only from six 

 to eight and from four to five spinules respectively. These differences, 



