Pacific Alpheids II — BANNER 
197 
Alpheus Fabricius 
Megacheles Group 
Alpheus deuteropus Hilgendorf, 1878 
For synonymy, see Banner, 1956. 
LOCALITY: One specimen at 1-1-387. 
Alpheus collumianus probabalis 
Banner, 1956 
For synonymy of these subspecies and the pa- 
rent species, see Banner, 1956. 
LOCALITY: One specimen from the coral 
reef at Ine, collected by Wells. 
discussion: The single specimen of this 
subspecies is markedly more hairy than were 
the specimens from Saipan; the long setae are 
especially noticeable on the antennular pe- 
duncle, the chelae, and the third and following 
legs. Moreover, the meri of the third and 
fourth legs bear 5-6 spines, instead of 4 as 
in the type, while the merus of the large chela 
has only 2 small weak spines instead of 6 
strong spines that were carried by the type. 
Alpheus collumianus medius Banner, 1956 
localities: Two specimens at E-l-387, 1 
at E-l-617. 
Macrochirus Group 
Alpheus gracilis var. simplex Banner, 1953 
For synonymy, see Banner, 1956. 
localities: Two specimens at E-l-306, 
both defective; 1 at E-l-387. 
discussion: This single intact specimen is 
almost identical to the specimens from Hawaii 
except that it bears a trace of a rostral carina, 
a condition also noted in one of the aberrant 
specimens from Hawaii. The external spine 
of the uropod is black. 
The two other specimens are assigned to 
this species with question for they are lacking 
their chelae and some of the other appendages. 
The parts remaining, as well as the structure 
of the anterior carapace, agree very well with 
the specimens from Hawaii. 
Alpheus ventrosus Milne-Edwards, 1837 
For earlier synonymy, see Banner, 1956. 
Alpheus sp. Coutiere, in Fauna and Geog. 
Maidive and Laccadive Archipelagoes 2 
(4): 882, pi. 74, fig. 19, 1905. 
Crangon latipes Banner, Pacific Sci. 7(1): 82, 
fig. 27, 1953. 
localities: Four specimens at E-l-290; 3 
at E-l-306; 2 at E-l-387; 3 at E-l-617; 5 
at E-l-630; 1 at E-2-343. 
discussion: Specimens from station E-l- 
630 and E-l-290 present an incomplete inter- 
gradation from the form described as C. latipes 
and the mature A. ventrosus. The inter grada- 
tion indicated by these specimens is confirmed 
by specimens from other areas and will be 
discussed more fully in a subsequent paper. 
One specimen in this collection shows the 
darkened spine on the uropods (as discussed 
in the specimens from Saipan). 
Alpheus amirantei Coutiere 
Alpheus amirantei Coutiere, Soc. Philomath. 
Paris, Bui. IX, 11(5): 15, 1908. 
Alpheus amirantei Coutiere, Linn. Soc. Lon- 
don, Trans., Zool. II, 17(4): 421, pi. 63, 
fig. 16, 1921. [Text the same as 1908 
reference.] 
locality: One specimen at E-l-611. 
discussion: This specimen appears to be 
somewhat intermediate in many characters 
between the type that Coutiere described for 
the Indian Ocean and the Hawaiian form. The 
relative lengths of the antennular peduncle, 
antennal peduncle and scaphocerite are sub- 
equal, like Coutiere ’s specimen, instead of 
having the scaphocerite markedly the longest. 
The basicerite bears a relatively strong spine, 
like the Hawaiian specimen. This specimen, 
a female, has slightly longer fingers to the 
large chela than does the Hawaiian form. The 
second carpal article of the second leg is 2.7 
