1914.] S.Kemp: Notes on Crustacea Decapoda. 115 



The examples from Kilakarai were found among weeds in 

 only a few feet of water; raan}^ of them are ovigerous females. 



The Persian Gulf specimens differ from others in the collec- 

 tion in having the teeth on the inferior margin of the rostrum 

 (4 or 5 in number) larger, though still smaller than those on the 

 upper edge. The rostrum also is longer, reaching to the middle 

 of the ultimate segment of the antennular peduncle (fig. 10). 

 The form perhaps deserves nomenclatorial recognition. 



Hippolysmata vittata has been recorded from the Inland 

 Sea of Japan (de Man), Hongkong (Stimpson), Cebu (Thallwitz), 

 Penang (Lanchester) and the Red Sea (Nobili). 



H, vittata var. ? 



Two specimens in the collection differ from typical H. vittata 

 in the development of the second pair of peraeopods. 



In the larger example the left merus of this pair of limbs 

 reaches beyond the apex of the antennal scale by one- fifth of its 

 length and the carpus, which is composed of 31 segments, is as 

 long as the rostrum and carapace combined. In this specimen the 

 right leg of the second pair is unfortunately missing. 



In the smaller example the right merus reaches to three- 

 quarters the length of the antennal scale and the carpus, which is 

 composed of 28 segments, is almost three-quarters the length of 

 the carapace and rostrum. On the left side the ischium, merus 

 and carpus are each almost exactly two-thirds the length of the 

 same segments on the right; the carpus, however, is composed 

 of the same number of segments 



The rostrum in each case bears seven teeth above and two 

 below. 



The form is, in all probability, merely a variety of H. vittata 

 in which the second peraeopods are unequal and with a greater 

 number of segments in the carpus. In all other respects there 

 appears to be the closest resemblance between the specimens and 

 typical examples. 



The variation is similar to, though not as extensive as that 

 found in Processa canaliculata on the Irish coast. ' 



The tv^o specimens were found at the Andamans, in which 

 locality typical H. vittata have not yet been found. 



'^11'^ Eist I., Andamans, A.R.Anderson. Two, 14 and 23 mm. 



Hippolysmata kiikenthali (de Man). 

 Plate VI, lig. II. 



1892. Merhippolyte orientalis. de Man {nee Bate), in Weber's Zool. 



Ergebn. Raise in Niederland. Ost-Ind., II, p. 407- 

 1902. Mevhippolyie orientalis Bate?, de Man, Abhandl. Senck. naturf. 



Ges. Frankfurt, XXV, p. 849, pi. xxvi, fig. 56. 



Kemp, Fisheries Ireland, Sci. Invest, for iqoB, p. 124 ( 1910). 



