Memoirs of the Indian Museum. 

 The principal distinctions between the two specimens are as follow :— 



[Vol. IV, 



Burmese Coast. 

 i. The median carina of the rostrum is very 

 indistinct. 



2. There are seven teeth on the raptorial 

 dactylus (one dactylus only examined). 



3. The anterior lateral lobe of the sixth thoracic 

 somite is nearly as broad as the posterior. 



4. The submedian carinae of the fourth ab- 

 dominal somite terminate in spines. 



5. The submedian carinae of the sixth abdominal 

 somite are bicarinate and there are three carinae 

 between them. 



6. The carinae which terminate in the submedian 

 teeth of the telson edge are proximally bifurcate. 



7. There is no praelateral denticle on the margin 

 of the telson. 



8. On the external edge of the basal segment 

 of the outer uropod there are ten movable spines. 



Japanese Coast. 



1. The median carina of the rostrum is distinct. 



2. There are six teeth on the raptorial dactylus. 



3. The anterior lobe of the sixth thoracic somite 

 is very much narrower than the posterior. 



4. The submedian carinae of the fourth abdo- 

 minal somite do not terminate in spines. 



5. The submedian carinae of the sixth abdo- 

 minal somite are entire and there is only a single 

 carina between them. 



6. The carinae which terminate in the sub- 

 median teeth of the telson edge are not bifurcated 

 proximally. 



7. There is a very conspicuous praelateral den- 

 ticle on the margin of the telson. 



8. On the external edge of the basal segment of 

 the outer uropod there are seven movable spines. 



The specimens examined do not show any distinctive colouration. 



We are indebted to Mr. Alan Owston for the specimen from the Japanese coast : — 

 s ^7 Okitsu, Suruga Gulf, Japan. A. Owston. 1 d 1 , 65 mm. 



For the opportunity of describing and figuring the only known Indian example 

 of this scarce species I have to thank Mr. A. Patience who has kindly permitted me to 

 examine the specimen obtained on the Burmese coast by Messrs. Simpson and Rudmose 

 Brown. This individual is a male, 31*5 mm. in length. 



Miss Rathbun records a specimen 87 mm. in length. 



Squilla costata was originally described from Japan (De Haan) and, except for the 

 specimen from the Burmese coast which is mentioned above, the few examples that 

 have since been found were all obtained on the coasts of that country. The species is 

 known from Wakanoura and Nagasaki (Rathbun) and from Misaki (Fukuda). 



32. Squilla multicarinata 1 , White. 

 Plate VI, figs. 73 — 76. 



1847. Squilla multicarinata, White, List Crust. Brit. Mus., p. 84 (sine desc.) 



1848. Squilla multicarinata, White, Proc. Zool. Soc, p. 144, pi. vi, figs. 1, la. 



1849. Squilla multicarinata, White, Ann. Mag. Nat. Hist. (2), IV, p. 381. 

 1880. Squilla multicarinata, Miers, Ann. Mag. Nat. Hist. (5), V, p. 20. 

 1894. Squilla multicarinata, Bigelow, Proc. U. S. Nat. Mus., XVII, p. 511. 

 1903. Squilla multicarinata, Nobili, Boll. Mus. Torino, XVIII, No. 455, p. 38. 



This species is allied to Squilla costata, but in addition to the possession of a three- 

 segmented mandibular palp, is still more profusely carinate, the entire dorsal surface 

 of the animal being closely ribbed. 



1 See addendum, p. 196. 



