no Records of the Indian Museum. [Vol. X, 



strongly developed on the fourth and fifth somites, where there are 

 in one specimen five and seven respectively. The sixth somite is 

 only a very little longer than the fifth. 



The telson (fig. lo) is broad at the base and narrows rapidly 

 towards the apex ; it bears two pairs of dorsal spinules. The apex 

 (fig. II) consists of a slender median tooth with a pair of spines on 

 either side, the inner nearly twice the length of the outer. The 

 outer uropod is less than twice as long as broad. 



The specimens examined are ovigerous females ; the eggs 

 measure from -55 to '65 and from -45 to -55 mm. in longer and 

 shorter diameter. 



The specimens described above agree well with Nobili's brief 

 account. In the type, however, the carina from the antennal spine 

 extends backwards nearly to the posterior end of the carapace 

 and the ultimate carpal segment of the second peraeopods is 

 said to bear a spine at its distal end. 



There are two examples in the Indian Museum — 



S4s_5 o i-nilps V N W of Ft Pedro 1 , , /-v 



10 ,-, mues .N.i>j.\v . 01 PL. TLuiu, } ■ investi"ator '. One, 15 mm. 



Ceylon. ) 



S4^G Ceylon Pearl banks. T. Southwell. One, 14 mm. 



The type was found in shallow water at Zanzibar. 



Genus Lysmata, Risso. 



Carapace without supra-orbital, but with antennal spine ; 

 pterygostomian spine present or absent. Lateral process of anten- 

 nular peduncle anteriorly pointed. Upper antennular flagellum 

 biramous, the two rami fused at base. Third maxillipede with 

 exopod. Epipods but no arthrobanchs at base of first four 

 peraeopods. Carpus of second peraeopods composed of man}- 

 segments. 



Lysmata chiltoni, sp. nov. 



Plate VI, fig. 1-4. 



1911. Mci'hippolytc spiiiifrons, Chilton, Trans. N. Zealand Inst., XI, III, 

 p. 549- 



Owing to the doubt that exists regarding the identity of Milne- 

 Edwards' Hippolyte spinifrons, a species referred to the genus 

 Merhippolyte by subsequent authors, I asked Dr. Chilton if he 

 would permit me to examine the specimens which he recorded 

 under this name in 191 1 from the Kermadec Is. He very kindly 

 sent me two examples, which most unfortunately dried up in 

 transit, and subsequently forwarded two others, all the material 

 that remained at his disposal. 



The question of the identity of Milne-Edwards' H. spinifrons 

 is discussed above and the conclusion I have reached is the same 

 as that advanced by Caiman, namely that the species is in all pro- 

 bability synonymous with A lope palpalis. Dr. Chilton's examples 

 do not agree at all closely with Milne-Edwards' description. 



