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



of the palm and are thus proportionately longer than in the allied 

 forms. In the longer limb the dactylus is conspicuously spatulate 

 (text- fig. 236) and has a single large and sharp tooth in its basal 

 third which fits into a cavity in the fixed finger when the claw is 

 closed. There are two teeth on the fixed finger, one a little be- 

 hind the middle, which is accommodated in a socket placed in 

 advance of the tooth on the dactylus, and another which is blunt 

 and molariform nearer the base. The smaller chela is similar. 

 but. there are two teeth on the dactylus — the posterior blunt and 

 inconspicuous — and one, which is small, on the fixed finger. 



The merus of the third peraeo- 

 - pod is about 8 times as long as 

 broad ; the propodus is rather 

 less than 7 times the length 

 of the dactylus. The accessory 

 claw of the latter is small, as 

 in P. laccadivensis. The telson 

 (text-fig. 24) differs from that 

 of all other Pontoniinae in the 

 possession of four pairs of dor- 

 sal spines in addition to the six 

 which occur at the apex. It is 

 possible that this is merely an 

 abnormality, but the spines are 



TEXT-ntk.24.-Periclim,nts alcocii, arr anged symmetrically on the 

 sp. nov. two sides. 



Telson. „ The single specimen, an oviger- 



ous female, is 50 mm. in length. 

 4789/7. Laccadive Sea, (.06 fms. ' Investigator,' Jan., One, Type. 



•9°34'57" N., 75°36'3o" E. 1895. 



As in the preceding species the integument is soft and mem- 

 branous. 



Periclimenes (Periclimenes) Ianipes, sp. nov. 

 (Plate IV, fig. 4.) 



The rostrum is strongly curved downwards, with the tip a 

 little upturned. It reaches just beyond the apex of the antennal 

 scale and in lateral view is shallow. On the strongly convex upper 

 border it bears 8 or 9 ' evenly spaced teeth, decreasing in size from 

 behind forwards and with the hindmost situated above or a little 

 behind the posterior limit of the orbit. The lower margin is un- 

 armed, or with a single small tooth i placed beneath the seventh 

 or eighth of those on the upper side. 



In dorsal view the rostrum is broad at the base, with a carina 

 on either side forming a sort of superciliary ridge over the upper 

 portion of the orbit. The lower limit of the orbit is defined by a 



1 Of three specimens two have 8 dorsal teeth and one has 9 ; in two specimens 

 the lower margin bears a single tooth and in one it is unarmed. 



