CRUSTACEA OP THE MEEQTJI ABCHIPELAaO. 277 



the teetli of tlie fingers of tlie left chelipede are not developed. 

 The cLelipedes of tlie second pair are everywhere smooth and 

 unarmed. The three other legs are slender, unarmed, and closely 

 resemble those of Sarpilius inermis, but the carpopodites are a 

 little shorter in proportion to the length of the propodites, and 

 the small curved claws (fig. 10) are armed with a small acute tooth 

 at their inner margins, as in the genus CoraUiocaris, Stimps. 

 (^=:(Edipus, Dana). 



The uropoda perfectly agree with those of JELarpilius inermis, 

 Miers, reaching a little beyond the distal end of the terminal 

 postabdominal segment, and being armed with a curved spine 

 above at their bases- The rami are ovate, ciliated, and the outer 

 are a little broader than the inner. 



The larger of our two specimens, the ova-bearing female, is 

 26 millim. long from the tip of the rostrum to the end of the 

 terminal postabdominal segment, the carapace (with the rostrum) 

 measuring 9 millim. The larger chelipede of the second pair is 

 17 millim. long, the hand measuring 9f millim., the palm 6 millim., 

 the fingers 3f millim. 



G-enus Hippoltte. 



loi. Hippoltte OLiaoDOisr, n. sp. (Plate XVIII. figs. 1-6.) 

 The collection contains one male specimen of a species of 

 Sippolyte which appears to be new; this I now propose to 

 describe under the name of oligodon, on account of the small 

 number of teeth with which the rostrum is armed. This speci- 

 men was found at Elphinstone Island; but, unfortunately, it is 

 somewhat mutilated, having lost a part of the flagella of the two 

 pairs of antennae, and also some legs. 



The rather slender animal is about 28 millim. long, from the tip 

 of the rostrum to the end of the terminal postabdominal segment, 

 the postabdomeu measuring 19 millim. This species seems to be 

 most allied to Hippolyte spinifrons, M.-Edw., from New Zealand ; 

 but may be distinguished from it at once by the ordinary size of 

 the antennal spine on the anterior margin of the carapace, which 

 is small and does not even reach to the middle of the eye- 

 peduncles. In Sippolyte oligodon, as in Sippolyte spinifrons, 

 the postabdomen is straight and not defiexed in the middle, 

 whilst in most other species of this genus it is suddenly 

 geniculated downwards. The rostrum is spiniform, small, and 



