538 RANKIN. 



2. N. japonica De Haan (Fauna Japonica, pi. 46, fig. 6, 

 1850). East Coast of Asia. 



3. N. liawaiensis Dana (U. S. Expl. Ex., Crustacea, p. 538, 

 1852). Hawaii. 



4. TV. macrognatha Stimpson (Proc. Phil. Ac, p. 27, i860). 

 Hong-Kong. 



5. N. processa Spence Bate (Challenger, Macrura, p. 527, 

 pi. 95, 1888). Amboina. 



The more marked differences between the Bermuda species 

 and the others are the following : N. ediilis has a keel on the ros- 

 trum ; in N. hawaiensis the rostrum is broad and triangular ; N. 

 japonica has no spines on the upper surface of the telson ; N. 

 maa^ognatlia has smaller eyes and longer maxillipedes ; N. 

 processa, to which the new species is most closely allied, has a 

 longer rostrum, longer maxillipedes and pereiopods, the carpus of 

 the 3d, 4th and 5th pereiopods is equal to the meros and ischium 

 together (in N. bcnnudensis the carpus is equal only to the 

 meros), the second joint of the pedicel of inner antennae is rel- 

 atively longer than in N. bcnnudensis, where it very slightly 

 excels in length the terminal joint. 



From all these species N. benniidensis differs in having a bifid 

 rostrum. 



Pal^monid.e. 



43. Palsemonella tenuipes Dana. 



Dana, Crust. U. S. Expl. Ex., p. 582, pi. 38, fig. 3, 1852. 



I ^ , I 9 with ova. Broken out of coral rock in Castle Har- 

 bor, 6-8 feet, '97. 



These two specimens belong, no doubt, to the same species 

 as those dredged by Heilprin in Shelly Bay and referred by him 

 to Dana's P. tcmdpes from the Sooloo Sea. I note eight dorsal 

 spines on rostum instead of seven, and no spines on carpus of 

 the second pereiopod. Probably a new species should be made 

 for this Bermuda form. 



44. Leander natator (Milne-Edwards). 

 Palcemon natator M.-Edwards, Hist. Nat. Crust., H., p. 393^ 

 1837- 



