356 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.46. 



bispinous projections; outer margin of merus also spinous; upper 

 margin bluntly denticulate with oblique rugose lines and armed sub- 

 distaUy with an acuminate spine. Upper surface of wrist covered 

 with flattened tubercles, its inner distal margin spinous, the spines at 

 the inner angle enlarged on the right or larger cheliped only; below 

 the inner proximal margin there is a laminiform margin which is den- 

 ticulate and terminates below the inner angle in a sharp spme; inner 

 surface with a few spines and spinules. Outer surface of palm covered 

 with flattened tubercles, of fingers with flattened granules ; tubercles 

 and granules are interspersed with horn-tipped spinules; upper and 

 lower margins spinulous, the upper margin terminating distally in a 

 spine; a few broken lines of fine granules parallel to the upper margin; 

 inner surface of palm roughened irregularly, and without a transverse 

 ridge. Fingers moderately gaping in female, prehensile edges irregu- 

 larly toothed, a strong tooth on each finger just behind the spoon- 

 shaped extremities; tips acute; a line of 11 or 12 horny-tipped 

 spinules on upper margin of movable finger. 



Ambulatory legs rather flat and broad, the thu*d pair nearly three 

 times as long as the carapace; merus joints with a sharp subdistal 

 spine; merus of third pair about two and a half times as long as wdde; 

 dactyli broad and strongly curved, and a little longer than then- 

 respective propodi measured on the outer or upper margin. 



Abdomen of female subchxular, broader than long, the terminal 

 segment a little broader than long and so deeply set in the preceding 

 segment that its distal end projects very slightly beyond the latter. 



This species has much in common with S. indicum Milne Edwards, 

 1837.^ See the description by de Man.^ It differs most strildngly 

 in possessing a median ridge on the mesogastric region, and in the 

 shape of the lower border of the front, which has a broad, shallow 

 median smus instead of the narrow, deep one of indicum. 



Family OCYPODID.^. 



TYMPANOMERUS DESCHAMPSI, new species. 

 Plate 32; plate 33, fig. 1. 



Type-locality. — Shanghai, China; E. Deschamps; 10 males, 4 

 females; 1 male is the type. 



Type.— Cat. No. 44527, U.S.N.M. 



Additional locality. — Korea; Dr. N. M. Ferebee, U. S. N.; June, 

 1884: 3 males, 1 female. 



Dimensions. — Type male, length 6.8 mm., width 10.6 mm. 



General appearance like that of T. stapletoni de Man.^ Carapace 

 thick, convex, subrectangular, the orbital margin being nearly 



1 Sesarma indica Milne Edwards, Hist. Nat. Crust., vol. 2, 1837, p. 74. 



2 Notes Leyden Museum, vol. 5, 1883, p. 166. 



> Rec. Indian Mus., vol. 2, 1908, p. 212, pi. 18, fig. 1. 



