NO. 3656 PORTUNID CRABS—STEPHENSON AND REES 95 
The pleopod is short, stout, slightly curved, and with flared trun- 
cated tip. Subterminal armature on outer side consisting of single 
well-spaced row of stout bipinnate bristles, about 30 in number and 
decreasing in size distally. Inner surface with only a few microscopic 
spinules. 
DistrinuTion.—Madagascar, Maldive Archipelago, and Hawaii. 
Thalamita spinimana Dana 
Thalamita spinimana Dana, 1852a, p. 283, pl. 17 (fig. 8); 1852b, p. 85.—Sakai, 
1936, p. 162, pl. 12 (fig. 1)—Shen, 1937, p. 131, fig. 17—Stephenson and 
Hudson, 1957, pp. 354-355, figs. 20, 30, pls. 5 (fig. 3), 8P, 9H. 
MateriaAu.—RMalay Peninsula: Sri Raja, Siam, Feb. 5, 1927, 1 male, 
Philippines: Reefs opposite Cebu, Apr. 5, 1908, Alb., 1 male; 
Reefs off Cebu, Apr. 7, 1908, Alb., 4 males, 1 female; Culion, May 
1931, Herre collection, 1 male. 
Australia: M48-3, East Poisit Reef, Arnhem Land, ca. 6 mi. NNW. 
of Darwin, Mar. 26, 1948, coll. R. R. Miller, 1 male. 
Palau Is.: Palau Is., Oct. 14, 1933, Herre collection, 1 female; Sta. 
60-1011, W. of Ebadul’s Pier, north end Koror I., sand and eel grass 
flats, Aug. 5, 1955, GVF, 1 male. 
Marianas: Y-193 B.C., Balabat, Yap I., tidal flats from under 
rocks, received 1952, coll. Hiatt, 1 male. 
MEASUREMENTS.—Males, 17-67 mm.; females, 26, 34 mm. 
Remarxks.—The number of spines on the inner border of upper 
surface of hand is not constant at four, but varies from three (small 
specimens) to five (large specimens). Sometimes there are four on 
one hand, but either three or five on the other hand of the same 
specimen. 
DistrisutTion.—Viti (Milne Edwards, 1861), Malaya to Palao 
(Shen, 1937), Australia (Stephenson and Hudson, 1957). 
Thalamita spinimera, new species 
Figure 35; PLATE 9 
Mareriwa..—Marianas: Near Agafia, Guam, on alcyonarian, Nov. 
12, 1953, Bronson, 1 female (9 mm.—holotype—cat. no. 112/418). 
DescriptTion.—Front: Protruding, 6-lobed. Medians long, with 
rounded tips, protruding farthest and separated by deep broad notches 
from submedians. Submedians broad with slight outward inclination 
and separated by narrow notches from laterals. Inner orbital lobes 
erect and with spinous tips. Suborbital lobes also with stout spinous 
tips. 
Anterolateral teeth: Five, all sharp. First three subequal, fourth 
the smallest, fifth much the longest. 
