Pacific Alpheids II — Banner 
195 
Fig. 3. Synalpheus charon charon Banner, aberrant 
form, a , Anterior body region; b y inflated large chela 
and cheliped; c, small cheliped of normal form; d, third 
leg; e, third leg, dactylus. 
imen was one of a sole pair, male and female, 
the other being plainly S. charon charon , col- 
lected at one locality would offer support to 
this conclusion. 
If this be so, then the original S. macromanus 
must be considered to be an aberrant form of 
S. paraneomeris Coutiere. 
Synalpheus paraneomeris Coutiere 
For synonymy, see Banner, 1956. 
localities: One specimen at E-l-106, 3 
at E-l-306. 
Coutierei Group 
Synalpheus coutierei Banner 
Fig. 4 
Synalpheus coutierei Banner, Pacific Sci. 7(1): 
36, 1953. 
Synalpheus hiunguiculatus Coutiere, Soc. Ent. 
de France, Bui. 1898(11): 232, figs. 1-4, 
1898 [and other authors — see Banner op. 
cit.\. 
nec Alpheus hiunguiculatus Stimpson, Acad. 
Nat. Sci. Phila., Proc. I860: 31. 
LOCALITY: Three specimens at E-2-382. 
discussion: These specimens are plainly of 
this species as illustrated by Coutiere (Joe. cit. 
and 1905: 873, pi. 31, fig. 8). However, they 
show slight differences in the proportions of 
the various parts of taxonomic significance, 
most apparently in the antennular peduncle, 
wherein the second article is relatively longer, 
in the small cheliped, in the dactylus of the 
third leg, and in the telson. These variations 
are shown in Figure 4. 
Coutiere (1898) has shown some variations 
in the anterior regions and in the dactyli of 
specimens collected in various parts of the 
Indian Ocean which approach the differences 
noted here; he also (1905: figs. 8, 10) de- 
scribed and depicted the form found in the 
Maidive and Laccadives, and described as a 
separate variety a form whose variations 
markedly exceed those of this group of spec- 
imens. I believe that considering the varia- 
tions already reported and the variations in 
related species of Synalpheus , no taxonomic 
importance should be attached to the slight 
differences found in these specimens from 
Arno. 
Synalpheus lophodactylus Coutiere 
Synalpheus lophodactylus Coutiere, Soc. Philo- 
math. Paris, Bui. IX, 11(5): 7, 1908. 
Synalpheus lophodactylus Coutiere, Linn. Soc. 
London, Trans., Zool. II 17(4): 421, pi. 61, 
fig. 11, 1921. [Text the same as 1908 refer- 
ence, plates not previously published.] 
