Alpheid Shrimp — BANNER 
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far posteriorly as it does on this species; S. 
brevirostris (Edmondson) has also the crests 
from the corneal teeth, but again, these do 
not extend far posteriorly and are not parallel. 
If the development of the crests is con- 
sistent within a species, and if the interpreta- 
tion of Coutiere’s sketches and brief de- 
scriptions are correct, this can be regarded as 
a separate species. 
Synalpheus Bate 
Synalpheus coutierei Banner 
Synalpheus hiungukulatus Coutiere [nee Stimp- 
son), Soc. Ent. de France, Bui. (11): 232, 
figs. 1-4, 1898. 
Synalpheus coutierei Banner, Pacific Sci. 7(1): 
36, 1953. 
LOCALITY: 1 specimen, Bernice P. Bishop 
Museum No. 1742, Canton Island, Phoenix 
Archipelago; collected by E. H. Bryan, 1924. 
discussion: While this specimen is defi- 
nitely S. coutierei, it differs slightly in the ros- 
trum and antennular peduncle from the illus- 
tration of Coutiere. In his figures the orbital 
hoods are thinner than those in this specimen 
(which even exceeds the breadth as shown for 
S. pachymeris, loc. cit., fig. 9) and the rostrum 
is definitely shorter than the orbital teeth and 
relatively thinner. In the antennular peduncle 
the articles are thinner and longer, but not 
markedly so, while the relative proportions of 
the parts of the antennular peduncle remain 
about the same. Considering the variation in 
the genus and the variation already reported 
for 5. coutierei, this is probably not important. 
Synalpheus carinatus (de Man) 
Alpheus carinatus Arch. f. Naturgesch., 
53: 508, pi. 22, fig. 2, 1887. 
LOCALITY: 4 specimens, Kwadak, Kwaja- 
lein Atoll, Marshall Islands, from specimens 
of Comanthus bennetti (Muller) as determined 
by A. H. Clark, U. S. National Museum; 
collected by P. E. Cloud, Jr. 
Synalpheus charon obscurus Banner 
For synonymy, see Banner, Pacific Sci. 10(3): 
329, 1956. 
LOCALITIES: 1 Specimen, Bishop Museum 
No. 3707, from Midway Island, Hawaiian 
Archipelago; 1 specimen, Bishop Museum 
No. 1497, from Wake Island (19°18'N., 166° 
35 ^E.), in coral; both collected by C. H. Ed- 
mondson, Tanager Expedition, 1923. 
DISCUSSION: These specimens plainly be- 
long to the new subspecies; the specimen 
from Midway, an ovigerous female, is 20 mm, 
long, the largest specimen yet seen. 
Synalpheus paraneomeris Coutiere 
For synonymy, see Banner, Pacific Sci. 10(3): 
331, 1956. 
LOCALITIES: 2 specimens at Station 287, 
USNM 194726 , from Likiep Atoll, Nado 
Island, Marshall Islands; collected by S. V. 
MacNeil. Two specimens from Jarvis Island, 
Line Islands; collected by Toomey, Ahia, and 
Graf, Itaska Expedition, 1935. One specimen 
from Wake Island; collected by C. H. 
Edmondson, Tanager Expedition, 1923. 
DISCUSSION: The large chela of the male 
specimen from Wake Island has a ratio of the 
chela length to the finger length of 2.6, the 
longest finger yet encountered (see Banner, 
loc. cit.). The specimen otherwise agrees with 
the variable characteristics of this species. 
Synalpheus tuthilli sp. nov. 
Fig. 2a-j 
TYPE SPECIMEN: An ovigerous female 12.6 
mm. long. Station Y-215, Tomil Harbor, Yap 
Island, Caroline Archipelago; collected by 
R. W. Hiatt, 1946. An allotype, 10.5 mm. 
long, and 7 paratypes from same station. 
DESCRIPTION: Rostrum short, reaching less 
than one-third the length of the visible por- 
tion of first antennular article; sides straight, 
with uniform taper, orbital teeth short, slight- 
ly shorter than rostrum, tips rounded, both 
medial and lateral margins slightly concave. 
