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PACIFIC SCIENCE, Vol. VII, January, 1953 
long as high, 5.0 times as long as thick. Mar- 
gins entire, with slight trace of longitudinal 
groove proximal to dactylus. Fingers com- 
pressed, slightly less than 0.5 as long as palm, 
slightly depressed from axis of palm, rotated 
so dactylus opens and closes on lateral plane. 
Dactylus 1.8 times as long as broad, 2.5 times 
as long as thick near base, with the upper (or 
lateral) margin slightly rounded, distal mar- 
gin strongly rounded. Chela with occasional 
setae on superior and inner face, with usual 
grouping of short bristles on opposing faces 
of fingers. Carpus of usual form. Merus with 
inferior margins acute, superior margin 
rounded. Superior margin with 6 feeble spi- 
nules on basal 0.7; distal angle with obtuse, 
projecting tooth. Inferior lateral edge of me- 
rus with 13 feeble spinules, slightly larger than 
those on superior edge, margin produced as 
acute tooth. Inferior internal margin of merus 
with 7 movable spinules, with bristles be- 
tween them. Merus 2.7 times as long as wide 
distally. Ischium of usual form, with 3 strong 
movable spines on inferior internal face, and 
on adjacent margin of merus. 
Small chela almost as long as large chela 
and with same rotation. Chela almost as high 
as thick, 5.0 times as long as btoad, with 
slight taper toward fingers. Inner margin of 
palm continued as obtuse projection at point 
of articulation of dactylus. Fingers almost as 
long as palm, tapering, definite hook on tip. 
Merus somewhat similar to that of large chela, 
but without spines or bristles on superior or 
inferior external margins; 5 movable spines 
and several bristles on inferior internal mar- 
gin. Ischium with 5 smaller movable spines. 
Lateral face of merus slightly more than twice 
as long as wide. 
Second thoracic legs about 0.7 as long as 
entire animal. Ischium 1.2 times as long as 
merus, 0.7 as long as entire carpus. Carpal ar- 
ticles with ratio 10 : 7 : 4 : 4 : 6; fifth article 
twice as broad as proximal end of first. Chela 
1.5 times as long as first carpal article. 
Ischium of third legs 0.4 as long as merus, 
with proximal movable spine. Merus 6 times 
as long as broad, with rather straight margins, 
without distal teeth. Carpus 0.6 as long as 
merus, with inferior and superior margins pro- 
jecting distally as small rounded teeth. Pro- 
podus 0.7 as long as merus, with 6 movable 
spines along inferior margin. Dactylus almost 
0.3 as long as propodus, curved, simple; su- 
perior margin with indentation or tooth 0.7 
of distance from base, curve then continuing 
to tip, with tuft of short setae on each side of 
dactylus at this break. Entire legs with occa- 
sional setae. Fourth legs similar. Propodus of 
fifth legs with 7 movable spines, and with 
'’brush” feebly developed, of but 6 rows of 
setae. 
Telson 3.0 times as long as width of pos- 
terior margin. Sides tapering, with angle of 
taper greater in distal 0.2. Anterior pair of 
dorsal spines located in middle of dorsal sur- 
face, posterior pair 0.7 of distance toward 
posterior edge. Posterior margin somewhat 
convex. 
Specimens range to 27 mm. long. Color in 
life not noted; some of preserved specimens 
with 7 distinct longitudinal bands reaching 
from antennular peduncles to end of abdo- 
men; in preservation all bands red. Middle 
band very narrow; dorsolateral bands quite 
broad; lateral and ventrolateral bands, latter 
along margins of abdominal pleura, each 
about 0.5 width of dorsolateral band. Distal 
0.25 of large and small chelae violet in pre- 
servative. No specimens with any dark pig- 
mentation on external spine of uropod. 
DISCUSSION : Even with the small number of 
specimens of this species at hand, 19 in all, 
some interesting variation was noted. As 
usual, the relative length of the rostrum varied 
in some specimens. This may be due more to 
the degree of flexure of the antennular pe- 
duncle than to the variation in length of the 
rostrum. In all cases the inner anterior margin 
of the orbital hoods were concave. Slight dif- 
ferences were noted in the relationships of the 
parts of the antennular and antennal pedun- 
cles. The most conspicuous differences were 
in the large chela, where the length of the fin- 
