1908. 



Records oj the Indian Museum. 



33 









1 



Number of 



Number of 



Species. 





Localit3^ 



normal 



abnormal 









,— ^ 



specimens. 



specimens. 



S. leptosquilla 



(cl 



Dsely 



''B. of Bengal" (270 — 



3 (t) 









resembling 



s. 



ten- 



41 Q fathoms;. 









iiispina). 















S. polita 





;; 



Madras 



Pondicherry .. 



13 (^) ' 

 3(1) 



T 



ii) 

 



; 5 







Bombay 



I i^) 



1 



ii) 



5 J 







Hongkong 



2 a) 















Orissa coast . . . > 



1(f) 









5. jasciata 







Andamans . . 



I Ci) 









S. gory petes 







Clieduba straits (Burma) 



I (t) 









S. gilesii 







"B. of Bengal" (65 



fathoms). 



4 (f) 









S. Scorpio ( 



'/iniiiacti- 



Hooghly estuary 



7 (f) i 









lata). 









/ ' .J 1 







S. Scorpio {geniiina) 



Karachi 



I (1) 









» ) 







Bom1)ay , . 



I (^) 









5. raphidea 







Mergui . . 

 Bombay . . . 

 Sandheads 



3 (v) 

 14 (t) 

 10 (^) 



I 



(i) ..:^ 



.;. 

 



) 5 







Rangoon 



I (t) 









> ! 







Andamans 



I (^) 









)> 







Singapore - . . .-. 

 Persian Gulf . . 



I (^) 

 J^ (t) 







 



) ) 







Karachi 



I (-S-) 









> ) 







Hongkong 



23 (s) 









J J 







Gulf of :\Iartaban (61 

 fathoms). 



I (v) 









) » 







j Off Cape Negrais (Burma) 



I (^) 









5. ovatoria 







Bombay 



I (if) 





. , , 



S. snpplex 









I(^) 









S. chlorida 







Hongkong 



6 ({n 









S. foveata 







Ye (Burma) 



{ I ff) 









'I'OTAL 





IQ 



' C-^3 



^ 451 





TO 



The 451 specimens are, therefore, remarkablv stable as regards 

 number of raptatorial teeth. Variations from the normal type 

 of the species only occurring to the extent of about 2 per cent. 

 In their other features the members of this collection seem also 

 very stable, and in these other features S. investigator is is itself 

 very stable : for example, on the outer border of the tail of a 

 Squilla (exopod of uropodite) are eight movable spines ; this 

 number is very constant throughout the genus, and all of the 

 seventeen specimens of S. investigatoris possess eight spines in 

 this situation. The stability of this feature is in striking contrast 

 to the variability of the claw in the same species. 



