192 



Records of the Indian Museum. 



[Vol. XXIV, 



P. brevicarpalis Sch. 



Dactylus of second peraeopod at 

 least two-thirds as long as palm. 



Dorsal spines of telson very small, 

 both pairs situated in distal half of its 

 length. 



Brilliantly coloured when alive. 



P. inornatus, sp. nov. 



Dactylus of second peraeopod not 

 more than half as long as palm. 



Dorsal spines of telson large, anterior 

 pair situated in proximal half of its 

 length. 



Without colour when alive. 



Text-fig. 43. — Periclimenes inornatus, sp. nov. 

 Anterior part of carapace, rostrum, 'etc. 



The rostrum is bent 

 downwards and reaches 

 to or a little beyond the 

 end of the antennular 

 peduncle (text-fig. 43). 

 The upper margin is 

 very slightly convex ; 

 the dorsal teeth ' are 

 evenly spaced, with the 

 posterior tooth, as in 

 the allied species, be- 

 hind, above or a little 

 in front of the hinder 

 limit of the orbit. The 

 single ventral tooth 

 usually found 2 is small 

 and situated beneath 

 the fifth or sixth of 

 those on the upper 

 margin. 



The eye is less slen- 

 der than in P. brevicar- 

 palis, but possesses an 

 ocular spot as in that 

 species. The fused part 



1 Of twenty specimens one has 6 dorsal teeth, eleven have 7 and eight have 8. 



2 Of twenty specimens one has no ventral teeth, eighteen have 1 tooth and 

 one has 2 teeth. 



Text-fig. 44. — Periclimenes inornatus, sp. nov. 

 a. Antennule. b. Antennal scale. 



