Hawaiian Crangonidae — BANNER 
41 
Antennular peduncles broad and heavy; 
second article slightly broader than long. Sty- 
locerite reaching almost to end of second an- 
tennular article. Scaphocerite slightly longer 
than antennular peduncle, not reaching to end 
of carpocerite. Squamous portion of scapho- 
cerite rounded anteriorly, comparatively 
broad. External tooth of basicerite only slight- 
ly shorter than stylocerite; upper angle not 
produced into tooth. 
Large chela rounded in outline, only slight- 
ly compressed, without tubercle at base of 
articulation of dactylus. Length of fingers 
somewhat more than 0.3 length of palm; chela 
more than 3 times as long as broad. Merus 
curved, without spines, with superior margin 
obtuse distally. 
Small chela 0.3 length of large chela. Car- 
pus greater in diameter than propodus. Merus 
without spines but produced on upper distal 
margin as broad dentate process. 
Carpal articles of second legs with ratio 
10 • 2.5 : 2.5 : 2.5 : 5.5. 
Merus of third legs broad, over 3 times as 
long as wide, inermous. Carpus with movable 
spine on distal inferior margin, with superior 
margin produced distally as sharp tooth. Pro- 
podus with 6 spines along inferior margin. 
Dactylus biunguiculate, with inferior tooth 
solid, conical, and with slightly protuberant 
tip; distal or superior tooth longer than in- 
ferior tooth, 0.5 as broad at base as inferior 
tooth. 
Length of largest specimens 15 mm.; usual- 
ly 10 mm. or less. Color typically olive brown 
to gray, but those living in heads of Pocillopora 
meandrina reddish. 
DISCUSSION: According to Coutiere’s de- 
scription, this species manifests a rather wide 
variation in the size and shape of the rostral 
front, in the antennules and antennae with 
their spines, and in the proportions of the 
chelae. An examination of almost 100 speci- 
mens available showed all of these and other 
variations. The more important variations ob- 
served were in the following characteristics: 
1. The length of the rostrum and of the orbital 
teeth. The rostrum itself varied from two to 
three times as long as broad, and its tip reached 
variously from two thirds the length of the 
visible portion of the first antennular article to 
beyond the end of the same article. In some 
cases the rostral tip was depressed when seen 
in side view, with the curve paralleling that of 
the orbital teeth; in others the rostrum con- 
tinued straight in the dorsal line of the cara- 
pace while the orbital teeth alone were de- 
pressed anteriorly. In most specimens the or- 
bital teeth were of the same length as the ros- 
trum; in some they were somewhat shorter, 
and in a few they were only two thirds the 
length of the rostrum, a condition that was 
approached by the specimen Coutiere de- 
scribed. 
2. The antennules. These were depicted by 
Coutiere as being variable in the proportions 
of the articles. The local specimens were found 
to parallel this described variability. In addi- 
tion, the stylocerite also varied in length, but 
its tip always reached beyond the end of the 
first antennular article. 
3. The spine of the basicerite. When the tip of 
this spine was compared to the tip of the sty- 
locerite, the two were usually found to reach 
to the same level, but in a few cases the tooth 
of the basicerite was much shorter. 
4. The breadth of the squamous portion of the 
scaphocerite. As shown by Coutiere, the squa- 
mous portion was two thirds the length of the 
lateral spine. In these specimens it varied from 
a narrow blade two thirds the length of the 
lateral spine to a broad squamous portion five 
sixths the length of the spine. 
5. The large cheliped. The variation in the 
proportions of the large chela were like those 
noted by Coutiere, but, in addition, the shape 
of the superior distal end of the merus was also 
found to be variable. In about half the speci- 
mens it was rounded, as specified and shown 
by Coutiere; in the rest of the specimens this 
corner was produced into a somewhat variable 
but small, acute, triangular tooth. 
