114 Rathhun — New Crabs from Gulf of Slam. 



Actumnus changensis sp. nov. 



Type. — 9 , Koh Chang, 1 fathom, coral. 



Dimensions. — Length, 3.8 mm. ; width, 5.7 mm. 



Near A. tomentosus Dana. Frontal and antero-lateral regions dotted 

 with separated grannies; an indistinct line of grannies curves inward and 

 forward from the last lateral tooth. Surface almost bare, with occasional 

 hairs which do not disguise the markings. First antero-lateral tooth 

 truncate, second and third acute; postero-lateral margins .straight. Cheli- 

 peds very unequal, graiuiles small, bead-like, dense on palms; larger 

 pollex short, with four large teeth. 



lieteropanope sexangula sp. nov. 



Type. — 9 , Gulf of Siam, exact locality not given. 



Dimensions. — Length, 5.2 mm. ; width, 7 mm. 



Form of iiT. eucratoides Stimpson ; hexagonal; surface uneven, a trans- 

 verse ridge on each frontal and protogastric lobe and a few nodules on 

 branchial region. Front strongly deflexed, quadrilobate ; four antero- 

 lateral teeth, fourth largest, acute, third minute. Clielipeds uiKMjual; 

 merus with a subterminal spine, wrist nodular, palms gramilose except 

 on distal portion of larger one. Legs slender. 



New Names applied to Known Species. 



Uca manii, nom. nov. for Gelasimiis acntus de Man, Alcock, not G. 

 acutus Stimpson, which is synonymous with U. dussumieri (Milne 

 Edwards). 



Pinnotheres alcocki, nom. nov. fur P. parvnins de Man, Biirger and 

 Alcock, not P. parvalus Stimpson. 



Hypocolpus haanii, nom. nov. ior Hypocolpus granidatus (de Haan) 

 = Cancer [Xantho) granulatus de Haan, 1837, not Cancer granulatus 

 Linujeus, 1758. 



Portunus ( Lupocycloporus ) innominatus, nom. nov. for Neptunus 

 {Lupocycloporus) gracilimanus Alcock, not Stimpson. 



