NO. 3556 PORTUNID CRABS—STEPHENSON AND REES 85 
stout and well developed, three spines on outer surface, sometimes 
reduced to tubercles. Upper surface of hand with inner and outer 
spine near middle and with two normal distal spines often reduced to 
rounded tubercles. Outer surface typically with three carinae, lower- 
most running to immovable finger, distinct granular middle carina 
and indistinct granular upper carina. In larger chelae of male these 
carinae indistinct or unrecognizable. 
Fifth leg: Merus slender (L/B=ca. 3), smooth posteriorly except 
for usual spine; posterior border of propodus bearing four to eight 
spines. 
Male abdomen: Penultimate segment much broader than long (ca. 
Ficure 31.—Thalamita philippinensis, new species, male holotype: a, pleopod; b, pleopod 
tip, upper surface; d, abdomen. Philippines, Sta. 5218, Alb.: c, pleopod tip, upper 
surface. Philippines, Sta. 5254, Alb., 25 mm. male; e¢, abdomen. (Scales=a, 1 mm.; 
b, c, 0.5 mm.; d, e, 5 mm.) 
1% times) with bulging sides. Ultimate segment rounded equilateral 
triangle. 
Male first pleopod: Fairly stout, smoothly curving to oblique tip 
bearing flared membrane. Both sides without armature until near 
tip. Here outer surface typically with five to seven stout subterminal 
spines directed obliquely forward and decreasing in size toward tip, 
and usually with two or three thinner bristles widely spaced and lying 
back from tip. In largest male single subterminal spine present. 
Inner surface bearing two to four stout spines opposite widest portion 
of flared membrane; these almost at right angles to appendage. 
MEASUREMENTS.—Males, 7-14 mm.; females, 8-12 mm.; ovig. 
females, 7-12 mm. 
991-520—67——7 
