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PACIFIC SCIENCE, VoL VII, January, 1953 
slightly over 0.5 length of palm. Distal por- 
tion of superior crest well developed, ending 
distally in very large, acute, projecting tooth, 
ending proximally in transverse groove. Other 
grooves and crests not developed. Fingers 
laterally compressed, thin at cutting edge. 
Carpus heavy, with rounded to acute flat tooth 
superior to point of articulation of propodus. 
Merus heavy, only twice as long as wide, 
without teeth. 
Second legs only lightly hirsute. Carpal ar- 
ticles with ratio 10 : 5 : 2 : 3 : 4 (in specimen 
drawn) . 
Third legs compressed and wide. Ischium 
with long spine. Merus 3.5 times as long as 
wide, strong tooth on inferior distal edge, 
lined by long setae along superior margin. 
Carpus also lined by setae on both edges; each 
distal margin projecting as acute tooth. Pro- 
podus with superior edge lined by setae, in- 
ferior edge with 5 pairs of movable spines and 
unpaired proximal spine. Dactylus short, sim- 
ple, acute, strongly curved. 
Specimens range to 35 mm. long. In life 
mostly colorless with scattered small red 
chromatophores on body and greenish-brown 
tracing of margins of anterior body regions 
and appendages; chelae with dark greenish 
cast. 
DISCUSSION: The 50 specimens of this spe- 
cies from Oahu were examined in detail and 
the following variations were noted: 
1. The rostrum varied from slightly shorter 
to slightly longer than the orbital teeth. 
2. The frontal margin of the carapace be- 
tween the rostrum and the orbital teeth varied 
from almost straight to definitely arcuate. 
3. The length of the stylocerite and the rel- 
ative lengths of the scaphocerite, carpocerite, 
and antennular peduncle varied as noted in 
the description. Usually the scaphocerite 
reached to somewhat past the middle of the 
third antennular article. 
4. The second carpal article of the second 
legs varied from 0;55 to 0.85 times the length 
of the first article, usually being about 0.6 to 
0.7 its length. The distal articles appeared to 
bear a more fixed relationship to the length 
of the second article than to the length of the 
first article. 
5. The number of spines of the propodus 
of the third legs varied from five to seven 
pairs. 
The smallest specimens, 8 millimeters long, 
as well as the largest, 35 millimeters long, 
were within this range of variation, and no 
particular variation was correlated with the 
growth differences. 
If one considers that Hilgendorf described 
the small chela as if it were the large chela — 
if he did not, his was a most aberrant cran- 
gonid—the Hawaiian form of this species 
does not differ from the original description 
in any way that is not covered by the observed 
variation. 
DISTRIBUTION: The species has been col- 
lected, mostly in water from 6 to 20 feet deep, 
at the following localities about Oahu: Ka- 
neohe Bay, Waimanalo, Hanauma Bay, Wai- 
kiki, Nanakuli, Kawela Bay. One specimen 
was dredged from water 100 feet deep off 
Waimanalo. Off Maui it was collected at five 
localities north and south of Lahaina. Ed- 
mondson (1925) reported the species from 
French Frigate Shoal; the Bernice P. Bishop 
Museum has two unreported specimens from 
Pearl and Hermes Reef. 
Elsewhere the species has been reported in 
the Pacific only from the Netherlands Indies, 
but within the Indian Ocean it has been col- 
lected at various points, including the Mal- 
dive Archipelago and the east coast of Africa, 
Crangon paradentipes (Coutiere) 
Figs. 23 a-i, 24 a-h 
Alpheus paradentipes Coutiere, Fauna and 
Geog. Maid, and Laccad. 2(4): 880, pi. 74, 
fig. 17, 1905. 
DESCRIPTION: Rostrum short, reaching only 
to near middle of first antennular article, nar- 
row, rather flattened on top, with carina ex- 
tending only short distance on anterior cara- 
pace. Orbital hoods not inflated, anterior 
