I9I3-J S. Kemp : Crustacea Stomatopoda of the Indo-Paciftc Region. 67 



5. The corneal index varies from 3*8 in a specimen only 31-5 mm. long to 6'0 in 



the largest examples. In specimens between 80 and go mm. in length it 

 varies from 4-1 to 4-3. 



6. The anterior margin of the ophthalmic somite between the bases of the eye- 



stalks is squarely truncate or emarginate, never pointed. 



7. The outer inferior margin of the merus of the raptorial claw is produced to a 



sharp and prominent spine. 



8. The dorsal carina of the raptorial carpus bears from three to five sharp tuber- 



cles in large specimens 1 ; in smaller examples (50-80 mm.) these are frequently 

 represented merely by more or less obscure lobes, while in very young indivi- 

 duals (30-60 mm.) the dorsal margin is often entire. The outer margin of the 

 dactylus is distinctly sinuous. 



9. The anterior lobe of the lateral margin of the sixth thoracic somite is parallel- 



sided and is much narrower but scarcely shorter than the posterior lobe 

 (fig- 54)- 



10. The following abdominal carinae end in spines : — 



Carinae. Abdominal somites. 



Submedian' 2 . . . . . . 5, 6. 



Intermediate . . . . . . (2) (3) 4, 5, 6. 



Lateral .. .. .. . . (2) 3, 4, 5, 6. 



Marginal .. .. .. 1,2,3,4,5. 



11. There are four, less commonly three or five, submedian denticles, seven to 

 nine, less commonly six or ten, intermediate and one lateral. 



12. In the bifurcate process from the basal segment of the uropods, the margin 

 anterior to the small lobe on the outer edge of the longer spine is always 

 strongly concave. 



The colour of spirit specimens is not characteristic. 



Squilla oratoria is, in my experience, much the most variable of the species in the 



group to which it belongs. In practice, however, the sharp and continuous median 



carina of the carapace and its very short anterior bifurcation will, in nearly every 



instance, suffice to distinguish it. The principal features in which the specimens differ 



from the account given above are noticed under the separate records. 



In the Indian Museum are nineteen specimens : — 



à ™ Yokohama. Berlin Museum. 1 2 , 186 mm. 



9 fi Nagasaki. F. C. Dale. r 2 , 160 mm. 



( Hongkong Museum. ) 

 Hongkong. j Q ^^ J 3 «, , 8 2 , 55-i 4 6 mm. 



1 The tubercles are not sufficiently sharp or distinct in fig. 55. 



8 In four specimens the submedian carinae of the fourth abdominal somite end in spines (see notes 

 under the several records). 



