34 THE BRACHYURA. 
Sesarma (Parasesarma) plicatum (Latreille), 
Cancer quadratus Fabricius, Suppl. Entom. Syst., 1798, 341. (Not Cancer quadrata 
Meuschen, Mus. Gronov., 1778, 84, which is an indeterminable species of Sesarma 
(?) from America, nor Cancer quadratus Fabricius, Mant. Ins., 1787, 1, 315, which 
is an Ocypode.) 
Ocypode plicata Latreille, Hist. Nat. Crust., 1803, 6, 47 
Sesarma quadratum Alcock, 1900, 69, 413. 
Kusaie, Carolines; Feb. 9, 1900; 4 ¢, 4 9, 5 juv. » 
Small specimens, the largest, an adult 2, measuring only 14.5 mm. in 
width. Legs marked with irregular transverse stripes of color. 
Sesarma (Parasesarma) carolinensis, sp. nov. 
PL. 6, Pigs. e720; Els 9) Ris. 2; 
Carapace considerably broader than long, and broader anteriorly than pos- 
teriorly. Surface almost smooth to the naked eye, but under the lens 
crossed, except in the middle portion, by fine transverse rugae, which are 
for the most part short, but the branchial region has 5 or 6 long lines, and 
the posterior part has some longish lines; surface sparingly punctate. -Re- 
gions faintly indicated, except the anterior portion of the mesogastric. No 
lateral teeth. 
Front 2 of the fronto-orbital width, vertical; 4 superior lobes subequal 
and well separated ; sides of front parallel; lower margin in front view for 
the most part straight, but toward the ends rounding up to the lateral 
margins; in dorsal view, slightly bilobed. Superior margin of orbit sloping 
almost directly backward to the orbital tooth. ; 
Merus joint of chelipeds with a large laminate anterior expansion, the 
edge of which is denticulate ; the denticles are larger, more irregular, and 
more projecting on the distal border of the lamina. Upper surface of arm 
and wrist rugose. Inner angle of wrist blunt. Outer surface of h 
for the most part smooth and covered with large punctae ; upper part finel 
granulate, the granules proximally forming rugae; 2 oblique pectina 
ridges not parallel to the border of the hand. The upper surface of the da 
tyls is marked by 14 or 15 transverse ridges, each of which is longer th 
the intervals between them, and is divided lengthwise by a groove. Eacl 
intervening space is occupied by an elevation, sub-triangular in shape, th 
base of each triangle being at the proximal end of the space. The finge 
of the ¢ have a very slight gape; the teeth of the dactylus are smaller that 
