210 Mr. L. A. BonwdaWc— Notes on Carides. 



12. ^geon rugulosmn. 



Related to A. medium (Ale. & And.), 1899, but has (1) the 

 beading- of the ridges of the carapace much coarser, (2) no 

 tooth on either side o£ base of rostrum, (3) the hirge spine 

 near the pterygostomial angle placed at the end of the supra- 

 marginal, not lateral, ridge. 



Western Indian Ocean. 



13. Urocaridella gracilis. 



Rostrum £^„ nearly twice as long as carapace. Antennal 

 and hepatic spines present. Antennular stalk three-quarters 

 length of antennal scale. Latter not half length of rostrum, 

 subtruncate, its distal spine not projecting. First leg out- 

 reaching antennal scale by tingers. Second legs equal and 

 similar, unarmed, outreaching antennal scale by band and 

 part of wrist. 



Maldive Is. 



14. Palcemonella elegans. 



Related to P. tridentata, Borr., 1899, but with rostrum 

 lanceolate, not reaching end of first joint of antennai, its 

 formula ^. 



Salomon I. 



15. Pahcmonelld longiroslns. 



Rostrum |, outreaching antennular stalk by nearly half its 

 own length, upcurved. First wrist half as long again as 

 its hand. Arm of second leg of even width throughout. 



Fardiffolu Atoll, Maldive Is. 



1 6. Pen'cUmenes ( Cristiger) f rater. 



Related to P. soror, Nobili, 1904, but (1) teeth on upper 

 edge of rostrum closer set towards tip, (2) two distal spines 

 on first joint of antennule, (3) anteinial scale decidedly out- 

 reaches tirst leg, (4) no accessory denticle on dactylopodites 

 of last three legs. 



Seychelles. 



17. Periclimenes [Cristiger) incertus. 



Related to P. parvus, Borr., 1898, but (1) body more 

 slender, (2) rostrum shallower, (3) u denticle on carapace 

 behind beginning of rostral crest, (4) penultimate joint of 

 third maxilliped longer than end-joint. 



Maldive Is. 



