502 Records of the Indian Museum. [Voi,. XXIV, 



the telson in width, each lobe armed with two spines, the outer three 

 times as long as the inner and equal to one sixth of the telson in 

 length, lateral margins lightly concave, proximal portion smooth, 

 distal portion armed with 12-15 spines increasing in length distally. 

 the interval between the last marginal spine and the larger spine 

 on the apical lobe greater than the interval between any other pair 

 of marginal spines. 



Inner uropod equal in length to the telson plus the long ter- 

 minal spine, without any spines on its lower inner margin. 



Outer uropod one-third as long again as the telson. 



Remarks. — This species is much less specialized than the other 

 two. The ej'es are much larger, the antennal scale proportionately 

 longer and the third thoracic limb much less robustly built. The 

 posterior thoracic limbs are noteworthy for their slender build, for 

 the great length of the ischium and for th? distinct nail and few 

 joints in the tarsus. The inner uropods are without spines, a 

 character which marks this species as distinct from all other des- 

 cribed species of the genus. 



UST OF REFERENCES. 



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 collection of deep-sea Crustacea from the Bay of Bengal and 

 I^accadive Sea. — Journ. Asiat. Soc. Bengal, vol. I,XIII, pt. 

 II, no 3, pp. 141-185. 



Alcock, A., and Anderson, A. R. S., 1899. An account of the deep- 

 sea Crustacea dredged during the surveying season of 1897-98. 

 — Ann. Mag. Nat. Hist., ser. 7, vol. Ill, pp. 1-27. 



Anderson, A. R. S., 1897. An account of the deep-sea Crustacea 

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Colosi, G., 1916. Nuova diagnosi e posizione sistematica di 

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Czerniavsky, V., 1882-3 Monographia Mysidarum imprimis Im- 

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Derzhavin, A., 1913. Neue Mysiden von der Kuste der Halbinsel 

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Hilgendorf , F., 1879. Die von Hrn. Peters in Mocambique ges- 

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