70 
PACIFIC SCIENCE, VoL VII, January, 1953 
molted, and its chitin was soft and distorted; 
however, close examination showed only one 
difference from the specimens described 
above: there were two spines on the carpus of 
the third legs (therefore more like the speci- 
men described by de Man). The other two 
specimens, which Coutiere had identified as 
C. dentipes (Guerin)— a species never reported 
in the Indo-Pacific— showed no characteris- 
tics that would distinguish them from C. col- 
lumiana as identified in this paper. 
DISTRIBUTION: This rather common species 
has been collected from the reef flats and from 
waters ranging to 20 feet deep at the following 
localities around Oahu: Waimanalo, Hana- 
uma Bay, Black Point, Waikiki, Mokuleia, 
Haleiwa, Kawela Bay. It was dredged from 
100-200 feet off Diamond Head and from 180 
feet off Kaena Point, where it was found liv- 
ing in sponges. Off Maui it was collected at 
Makena, Kalama Park, Lahaina, and two lo- 
calities south of Lahaina. The "Albatross” 
specimens came from off Laysan, 16 fathoms 
(Station 3962, U.S.N.M. 63596), off French 
Frigate Shoal in 1414-1 61/2 fathoms (Station 
3968, U.S.N.M. 63509), and off Nihoa, 24-40 
fathoms (Station 4163, U.S.N.M. 63510). Ed- 
mondson (1925) has reported the species from 
Pearl and Hermes Reef, Laysan, Lisianski, and 
Ocean Islands. 
Edmondson (1925) has also reported the 
species from Johnston, Wake, and Palmyra 
Islands in the central Pacific. The species has 
been otherwise reported from Djibouti, at the 
mouth of the Red Sea, through the Indian 
Ocean and western Pacific to Japan. The type 
locality is the Bonin Islands. 
Crangon deuteropus (Hilgendorf) 
Fig. 22 a-g 
Alpheus deuteropus YUlgenAod, K. Akad. Wiss. 
Berlin, Monats. 1878: 834. 
DESCRIPTION: Rostrum acute, curved 
abruptly upward near tip; tip reaching about 
to middle of visible portion of first antennular 
article, posteriorly continued as distinct ros- 
tral Carina; base separated from orbital hoods 
by depression. Orbital hoods rounded except 
for acute orbital teeth which equal rostrum in 
length. Margin between orbital teeth and ros- 
trum straight to slightly arcuate. 
Antennular peduncle long and slender, 
with second article slightly less than 1.5 times 
as long as visible portion of first, about twice 
as long as third. Lateral spine of stylocerite 
from 0.7 as long to as long as first antennular 
article. Entire antennular peduncle densely 
hirsute. Lateral spine of scaphocerite strong, 
1.25 times as long as narrow squamous por- 
tion; outer margin strongly concave. Lateral 
spine of basicerite strong, extending beyond 
end of rostrum. Carpocerite hirsute. Scapho- 
cerite usually not reaching end of last anten- 
nular article; carpocerite almost always longer 
than both antennular peduncle and scaphocer- 
ite. [The specimen drawn in Figure 22a is ab- 
normal in these relationships.] 
Chelae very densely hirsute on inner face 
and superior portion of outer face; structure 
obscured by setae. Hirsute surfaces papillose 
where bundles of setae are attached. Large 
chela strongly compressed, ovate in shape, 
about twice as long as high. Fingers approxi- 
mately 0.2 as long as entire chela. [For termi- 
nology of crests and grooves, see Fig. 17^.] 
Superior crest strong, rounded, distally pro- 
jecting as long, subacute tooth, proximally 
ending in transverse groove. Transverse 
groove deep. Superior groove deep but short. 
Plaque crest heavy, soon merging with face of 
palm. Inferior crest heavy, well defined but 
not extending proximad to shoulder of in- 
ferior depression, distally ending in strong, 
acute tooth. Inferior depression shallow; 
shoulder slight and rounded. Short immov- 
able finger emarginate at tip to receive dac- 
tylus. Dactylus rotated to close laterally and 
distally across end of chela, compressed and 
sharply carinate. Carpus relatively large. Me- 
rus heavy, without teeth, with superior distal 
angle subacute. 
Small chela large, 0.8 as long as large chela, 
ovate, densely hirsute on inner face. Fingers 
