Memoirs of the Indian Museum. [Vol. IV, 



Sl.w ï 



3394-6 r Hongkong. Hungerford. 3 d 1 , i 9 , 64—113 mm. 



~ Mauritius. 1 (Purchased.) id , 1 9 , 116, 126 mm. 



(S. manritiana, Wood-Mason, MS.) 

 These specimens differ from typical examples in having the punctuation of the dorsal surface 

 very poorly developed. The rostrum also is longer (about as long as broad) and its lateral 

 margins are very strongly upturned; the anterior lateral process of the sixth thoracic somite 

 is very clearly shorter than the posterior and the submedian carinae of the 4th abdominal 

 somite and the lateral carinae of the ist and 2nd end in spines. 



Thanks to the courtesy of the Trustees of the British Museum, I have also been 

 able to examine the following very interesting series of thirty-one specimens : — 

 Hawaiian Is. Hawaiian Govt, from Internat. 1 5 , ca. 120 mm. 



Fish. Exhib. of 1883. 

 Except that the carpus of the raptorial claw bears only two tubercles and obscure traces of a 

 third on its dorsal margin, this specimen is almost the exact counterpart of the two peculiar 

 examples recorded from Mauritius. 

 Honolulu reefs, Hawaiian Is. 'Challenger.' 19,146 mm. 



(Brooks, 1866, sub S. nepa.) 

 Except that the intermediate and lateral carinae of all the abdominal somites end in spines this 

 example is precisely similar to the preceding. One raptorial claw is missing and in the other, 

 which has been broken off and subsequently redevelope J, the dorsal carina of the carpus (as 

 in young specimens) terminates abruptly at its distal end but is otherwise entire. 

 Yokohama. H. Batson Joyner. 4d , 147 — 177 mm. 



(Miers, 1880, sub S. nepa.) 

 Yokohama. ' Challenger.' 1 d , 140 mm. 



(not mentioned by Brooks.) 

 Pokoska, Japan, 5—25 fms. 'Challenger.' 1 9 , 145 mm. 



(Brooks, 1886, sub S. nepa.) 

 Kobe, Japan. ' Challenger.' 1 9 , 77 mm. 



(Brooks, 1886, sub S. nepa.) 

 Inland Sea of Japan, 15 fms. ' Challenger.' 1 9 , 46 mm. 



(Brooks, 1886, sub S. nepa.) 

 Inland Sea of Japan. R. Gordon Smith. 3d, 71 — 138 mm. 



Inland Sea of Japan. (de Man, 1907, sub C. alfinis.) 1 d , 45 mm. 



De Man mentions that the submedian spines of the telson probably possess movable tips, but 

 this, I believe, is due merely to their partial fracture. No such character is shown in other 

 examples of a similar length. 



1 The localities of specimens obtained by purchase are frequently inaccurate and, though I have no 

 special reason to distrust this label, I am none the less inclined to regard the record with suspicion. 

 Before we can accept the enormous increase in the known geographical range which is implied, fresh 

 specimens either from Mauritius or from localities lying between it and the China Seas must be examined , 

 for 5. oratorio, in the strict sense appears to be entirely absent from the coasts of British India. In the 

 peculiar varietal characters which are noticed the specimens agree closely with two examples from 

 Hawaii. 



