74 Memoirs of the Indian Museum. [Vol. IV, 



n ^± Persian Gulf, 13 fms., ' Investigator.' 2 cf , 57 and 82 mm. 



29 20' N., 48 47' E. 

 ? 279 ~ 81 Persian Gulf, 25 fms., 'Investigator.' 2 <? , 1 5 , 93—96 mm. 



28 59' N-, 50 ' 5' E. 

 y^ Kuweit, Persian Gulf. 'Investigator.' 19,34 mm. 



^ (locality unknown.) S. McLachlan. 1 c? , 57 mm. 



The following specimens from other sources have also been examined : — 



British Museum. 



S. Foimosa. Formosa Museum. 1 r? , 90 mm. 



Singapore. Bedford and Lanchester. 2 ? , 98 and 101 mm. 



Sunderbunds, Ganges Delta. F. Day. 2 <5 ' , 4 9 , 42—66 mm 



Sarawak Museum. 



Buntal and Burong Is., Borneo. 3 9 , 37—73 mm - 



Bombay Natural History Society. 



Bombay. 2 d" , 86 and 120 mm. 



The range of 5. interrupt a consequently extends from Formosa and Hongkong 

 westwards to the Persian Gulf. 



26. Squilla wood-masoni, Kemp. 



Plate V, figs. 63—65. 



18S0. Squilla nepa, Miers, Ann. Mag. Nat. Hist. (5), V, p. 25 {partim). 



1893. Squilla affinis, Henderson, Trans. Linn.'Soc. Zool. (2), V, p 453 (partim). 



Squilla polita, Wood- Mason, MS. (nee Bigelow). 

 1908. Squilla polita, Lloyd, Rec. Ind. Mus-, II, p. 33 (sine desc). 

 1911. Squilla wood-masoni, Kemp, Rec. Ind. Mus., VI, p. 99. 



Squilla wood-masoni may be distinguished from the three preceding forms by the 

 use of the following characters : — 



1. The dorsal surface of the carapace and abdomen is smooth , highly polished and 



without trace of punctuation. 



2. The carapace is shorter and broader ; its breadth behind the antero-lateral 



angles is almost invariably more than one-half of its length in the median line, 

 including the rostrum (tig. 63). 



3 . The anterior bifurcate portion of the median carina of the carapace is entirely 



obsolete, though its position is often marked by dark lines of pigment. 



4. The eyes are large ; the corneal index varies from 3 - o in young examples to 4-2 



in large specimens. In examples between 80 and 90 mm. in length it falls 

 between 3-4 and 3-9 The anterior margin of the ophthalmic somite is strongly 

 convex and is produced to a small but quite distinct median point. 



5. The carpus of the raptorial claw somewhat resembles that of 5. oratoria, s.s. It 



is armed dorsally with two or three tubercles, and in addition the extreme 

 distal edge is usually produced to a blunt tooth-like process (fig. 64) . 



6. The dactylus of the same limb is strongly sinuate externally. The whole seg- 



ment is of a more clumsy build than in the preceding forms ; the teeth on the 



