34 
PACIFIC SCIENCE, Vol. VII, January, 1953 
neotype; a female 10.5 mm. long, col- 
lected from coral in about 10 feet of water in 
Hanauma Bay, Oahu (U. S. N. M. 93453). 
description: Rostrum acute, narrow, 
about 1.5 times as long as broad at base, tip 
reaching slightly beyond end of first anten- 
nular article; lateral margins concave. Orbital 
teeth reaching almost to end of rostrum, con- 
siderably broader than rostrum at base; with 
concave lateral margins. Dorsal surface of 
carapace and orbital hoods uniformly rounded; 
both rostrum and orbital teeth somewhat de- 
pressed toward tip, in lateral view. 
Antennular peduncle relatively broad and 
heavy, with second and third articles of ap- 
proximately equal size, slightly broader than 
long; visible portion of first article slightly 
longer than others. Outer flagellum with 
thickened basal portion about as long as an- 
tennular base. Stylocerite strong, lateral spine 
reaching end of second antennular article. 
Scaphocerite with lateral margin slightly 
concave, lateral spine strong, tip reaching be- 
yond ends of antennular peduncle and car- 
pocerite. Squamous portion well developed, 
reaching end of antennular peduncle. Upper 
teeth of basicerite entirely lacking, lower 
tooth acute but not reaching beyond end of 
first antennular article. 
Terminal article of third maxillipeds round- 
ed, with usual strong spines. 
Large chela compressed but with rounded 
and entire margins. Palm slightly less than 
twice as long as high, 0.7 as thick as high. 
Fingers slightly less than 0.3 length of palm; 
dactylus strongly arcuate and closing at 90° 
to plane of chela. Merus of cheliped 3 times 
as long as broad, with small terminal tooth on 
superior distal margin. Small chela less than 
0.5 as long as large chela, with palm about 
1.3 times length of fingers, twice as long as 
broad. 
Carpal articles of second legs with ratio 
10 : 2.0 : 2.0 : 1.7 : 4.2. 
Merus of third legs 4.3 times as long as 
broad, twice length of ischium; both ischium 
and merus unarmed. Carpus slightly over 0.5 
as long as merus, with terminal rounded tooth 
on superior margin, with terminal movable 
spine on inferior margin. Propodus as long as 
merus, 7 times as long as broad, with 6 mov- 
able spines. Dactylus relatively long and thin 
for genus, almost 4 times as long as wide at 
point of maximum breadth, not strongly 
curved. Lower unguis only slightly divergent 
from axis of dactylus, conical, acute, marked- 
ly smaller than superior unguis, length only 
0.3 and basal diameter 0.7 that of superior 
unguis. Superior unguis acute and lying on 
axis of basal portion of dactylus; about 0.3 as 
long as entire dactylus. Fourth legs similar to 
third. Fifth legs similar to but thinner than 
anterior legs, with no trace of ''brush.” 
Telson about 1.3 times as long as broad at 
base, tip 0.5 as broad as base. Posterior mar- 
gins with usual 2 pairs of spines, length of 
longer over 0.5 width of posterior margin. 
Margin strongly arcuate between spines. An- 
terior pair of dorsal spinules over 0.3 distance 
from articulation, posterior pair slightly over 
0.7. 
DISCUSSION: The name Alpheus (now Synal- 
pheus) hiungukulatus was applied by Stimpson 
to a specimen from an unspecified locality in 
the Hawaiian Islands. He described it as fol- 
lows (I860 — translated from the Latin): 
Closely related to Alpheus neptuna, yet having front 
short-toothed; spine at the base of the dactylus of large 
chela missing; posterior foot small, dactylus two- 
clawed, secondary claw ventral. The merus of the third 
and fourth legs without spines on the lower side. 
Length .5 inch. Habitat; Hawaiian Islands; in coral. 
This description was without plates. Evi- 
dently Stimpson planned to publish more 
than this preliminary account, as he did for 
the other groups (the descriptions of the 
Brachyura and Anomura of the expedition 
were published posthumously in 1907 by the 
Smithsonian Institution). However, nothing 
further on the Macrura was ever published. 
The type specimen is now lost — whether or 
not it was destroyed in the fire of the Phila- 
delphia Academy of Science could not be 
ascertained— so there is nothing left but the 
description, which will fit many synalpheids 
