Alpheid Shrimp, X: Fiji, Tonga, Samoa— Banner and BANNER 
177 
group, there were variations In the relative 
lengths of the articles of the carpus of the 
second legs, in the rostral front, and in other, 
characteristics, 
Alpheus brevipes ' Stimpson 
Alpbeus brevipes Stimpson, I860. Acad. Nat. 
Sci. Philadelphia, Proc. 12:30. 
Crangon brevipes Banner, 1953. Pacific Sci. 
7(1): 103, figs. 35 -37. [Neotype estab- 
lished.} 
? A. species Banner, 1958. Pacific Sci. 
12(2): 167. 
LOCALITIES: Tonga: 2 specimens from BT 
2; 1, BT 9; 4, BT 10; 2, BT 11; 2, BT 13; 
1, BT 17. Samoa: 1 specimen from BAS 9; 1, 
BP 4. 
DISCUSSION : This species has previously been 
reported to be quite variable, both from Hawaii 
(Banner, 1953:103) and from other localities 
in the Pacific (Banner, 1956:354). Most of 
the specimens from these islands and other 
areas represented in the collection fall within 
the established limits of variation; however, 
four specimens are remarkably different. 
One of the specimens is from BAS 9. The 
specimen is defective with most of the ap- 
pendages gone. However, in all parts remaining, 
except for the chela, the characteristics are 
those of A. brevipes; the large chela is similar 
in general form, but has a more hammer-shaped 
dactylus, a shorter fixed finger, and has the 
palmar adhesive plaque set at a slight angle, 
and has a definite rounded transverse depression 
behind the adhesive plaque. 
The three other specimens came from other 
areas. Two have been already reported from 
Onotoa, Gilbert Islands, as A. species in the 
Gbesomanus group (Banner, 1958:167). The 
third specimen (carapace length 3.4 mm) came 
from collections of the Bernice P. Bishop 
Museum from Palmyra Island (data not avail- 
able); it has not been reported before. The 
two Gilbertese specimens are incomplete; the 
Palmyra specimen is intact. The three speci- 
mens are quite constant among themselves and, 
with the specimen from Samoa, would be 
placed in A. brevipes without question if it 
were not for the form of the chela. The one 
intact small chela, from the Palmyra specimen, 
also is similar to that of A. brevipes; however, 
the large chela Is unlike any chela in the 
Crinitus subgroup, and has the appearance of 
an Obesomanus-type chela. The palm is sub- 
cylindrical and tapering toward the finger; 
the fixed finger is short and dlstally curved 
abruptly towards the appositional face; the 
dactylus is definitely hammer-shaped, closing 
beyond and over the fixed finger, and flexed 
far back on the face of the palm where the 
adhesive plaque is set low and at an angle. 
None of the other specimens in the collec- 
tion show variations approaching the condi- 
tions found either in these chelae or in the 
chela of the specimen from Samoa; therefore, 
it appears unlikely that these are of the same 
species as the common A. brevipes with its 
massive cylindrical chela. However, as A. 
brevipes is such a variable species, and because 
these specimens are so few, so incomplete, 
and from such widely different areas, and 
especially because they could not be dis- 
tinguished from A. brevipes were the chelae 
missing, they have been retained in this species 
until a more adequate series can be studied. 
Alpheus cloudi Banner 
Fig. 19 
Alpheus cloudi Banner, 1956. Pacific Sci. 
10(3): 352, fig. 16. 
localities: Fiji: 2 specimens from BF 13; 
2, BF 18. 
station BF 18. 
