88 
PACIFIC SCIENCE, VoL VII, January, 1953 
only slightly beyond 0.7 of length of visible 
portion of first article, and only slightly ex- 
ceeding broadened portion. Outer flagellum 
heavy, short, not over 1.5 times length of 
peduncle. 
Basicerite with strong, acute spine. Scapho- 
cerite strong, outer margin curved, spine dom- 
inant over reduced squamous portion; tip 
reaching beyond end of antennular peduncle 
and carpocerite. Carpocerite as long as anten- 
nular peduncle. 
Proximal portion of palm of large chela sub- 
cylindrical in section, as thick as high, entire 
chela less than 3 times as long as thick; distal- 
ly tapering, more flattened. Chela proximal to 
articulation of dactylus slightly inflated; lat- 
eral face proximad of articulation with poorly 
defined but noticeable longitudinal groove. 
Dactylus of usual form, about 0.3 length of 
entire chela. Merus twice as long as broad, 
superior distal margin rounded, inferior inter- 
nal margin with strong subterminal tooth, 
inermous. Large chela sexually dimorphic in 
size, that of female 0.8 and that of male 1.4 
times as long as carapace. 
Small chela sexually dimorphic in size and 
proportions. Appendage of female with fin- 
gers 0.4 as long as chela; chela 3 times as long 
as broad. Carpus elongate, equal in length to 
fingers. Merus twice as long as broad, 0.8 as 
long as chela; superior margin irregular; in- 
ferior internal margin without tooth. Append- 
age of male about 0.3 larger proportionately 
than that of female, with fingers 0.6 length of 
chela; chela 3 times as long as broad. Carpus 
0.5 as long as fingers, Merus similar to that of 
female, but 0.7 as long as chela and with su- 
perior margin regular. 
Carpal articles of second legs with ratio 
10 : 23 : 5 : 5 : 10. 
Third legs with strong movable spine on 
ischium. Merus 2.6 times as long as broad, 
with very strong subterminal tooth. Carpus 
0.5 as long as merus, with inferior distal mar- 
gin projecting as acute tooth; article without 
movable spines. Propodus only slightly long- 
er than carpus, heavy, with about 10 strong 
movable spines. Dactylus simple, strong, and 
slightly curved, about 0.25 as long as merus. 
Telson 1.5 times as long as broad at base, 
anterior breadth 1.7 times breadth at posterior 
margin. Lateral margins slightly convex an- 
teriorly and slightly concave posteriorly; pos- 
terior margin arcuate. Length of larger pair of 
posterior spines approximately equal to 
breadth of tip; dorsal spines as long as larger 
posterior spines, located approximately 0.3 
and 0.7 of distance from anterior end of tel- 
son; distal border without spinules. Inner uro- 
pod with numerous strong spines on distal 
and distolateral margins. 
Largest female 10.0 mm. long; color in life 
not noted. 
DISCUSSION: In the four specimens avail- 
able, no marked variation was noticed. Unfor- 
tunately, a second female did not have a small 
chela, so it was impossible to determine 
whether the irregularity of the superior mar- 
gin of the merus noted above was actually a 
sexually dimorphic characteristic or merely an 
individual variation. 
This form differs in several respects from 
the type as described by CoutiUe. In the first 
place, in CoutiUe’s specimens the scaphocer- 
ite was not longer than the carpocerite, and 
both were longer than the antennular pedun- 
cle instead of as described here. The basicerite 
is described as, "a peu pres inerme,” w’hereas 
in this form the basicerite has a relatively 
strong spine. The greatest differences are in 
the small chelae; the differences in propor- 
tions of the finger and the palm between the 
specimen drawn by Coutiere and the one 
drawn here are merely sexual dimorphism; 
however, Coutiere shows his specimens as 
carrying a continuous band of setae which are 
lacking in all Hawaiian specimens, and he 
states that the merus bears a strong tooth 
("epine”) which is lacking in the Hawaiian 
specimens. The second article of the carpus 
of the second legs is over three times as long 
as the first, and in the local specimens it is 
only 2.3 times as long. Finally, the carpus and 
propodus in Coutiere's specimens were slight- 
