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PACIFIC SCIENCE, Vol. XX, April 1966 
localities: Fiji: 1 specimen from BF 2; 
3, BF 13; 5, BF 17. Samoa: 2 specimens from 
BAS 1; 4, BAS 4; 12, BAS 14; 1, BBS 7; 1, 
BP 1; 1, BP 6a. 
DISCUSSION: The Samoan specimens came 
from tubes of felted blue-green alga, Lyngbya 
majuscula, collected at 1-3 ft below low tide 
level, behind the surf zone but where the wave 
action was strong, at "Lions Head" on the 
coast east of Pago Pago Harbor (stations BAS 
5, 13, 14 and BP 1). 
Alpheus pachychirus Stimpson 
Alpheus pachychirus Stimpson, I860. Acad. 
Nat. Sci. Philadelphia, Proc. 12:30. 
LOCALITIES: Fiji: 3 specimens from BF 13; 
3, BF 17. Tonga: 2 specimens from BT 15. 
Samoa: 1 specimen from BAS 1; 5, BAS 5; 
4, BAS 10; 1, BAS 13; 9, BAS 14. 
Alpheus alcyone de Man 
Alpheus alcyone de Man, 1902. Senckenb. 
Naturf. Gesell., Abhandl. 25:870, Taf. 
27, fig. 61. 
Alpheus aculeipes Coutiere, 1905. Fauna and 
Geog. Maid, and Laccad. 2 (4): 892, pi. 
79, fig. 31. 
LOCALITIES: Fiji: 3 specimens from BF 2; 
6, BF 4; 1, BF 8; 3, BF 9; 20, BF 11; 8, BF 
13; 6, BF 16; 5, BF 17; 3, BF 20; 2, BF 20. 
Tonga: 1 specimen from BT 5. Samoa: 4 
specimens from BAS 1; 1, BAS 2; 2, BAS 3; 
4, BAS 6; 2, BAS 7; 22, BAS 10; 3, BAS 11; 
3, BAS 12; 1, BAS 14; 11, BBS 1; 5, BBS 2; 
1, BBS 3; 9, BBS 4; 2, BBS 8; 13, BBS 10; 
1, BP 1; 1, BP 6; 9, BP 8; 1, BP 13; 4, BP 14. 
DISCUSSION: These specimens agree very 
well with the descriptions of de Man and 
Coutiere (the latter using the name A. 
aculeipes ), with a single exception. Both 
authors state that the dactylus of the third 
leg bears a small but definite accessory hook; 
in most of these specimens a similar hook was 
found, but showing considerable variation in 
size; however, in several specimens, including 
two from Fiji, the accessory hook was reduced 
to a very slight shoulder on the inferior surface 
of the dactylus, a projection so slight that it 
was difficult to see. A similar variation was 
noted by Coutiere for A. spongiarum Coutiere. 
■Alpheus ovaliceps Coutiere 
Alpheus ovaliceps Coutiere, 1905. Fauna and 
Geog. Maid, and Laccad. 2(4): 888, pi. 
77, fig. 27. 
LOCALITIES: Tonga: 5 specimens from BT 
10; 20, BT 17. Samoa: 5 specimens from BAS 
5; 1, BAS 10. 
Alpheus bucephalus Coutiere 
For full citation see Banner (1957:201). 
LOCALITIES: Fiji: 1 specimen from BF 13; 
1, BF 16; 1, BF 17; 1, BF 18. Tonga: 1 speci- 
men from BT 4; 4, BT 5; 2, BT 10; 10, BT 
11; 5, BT 12; 1, BT 16. Samoa: 1 specimen 
from BAS 5; 4, BAS. 6; X* BAS 7; 1, BAS 8; 
2, BAS 9; 2, BBS 2; 1,"BBS 10. 
Alpheus bradypus Coutiere 
Alpheus bradypus Coutiere, 1905. Fauna and 
Geog. Maid, and Laccad. 2 (4): 891, pi. 
78, 79, fig. 30. — Banner, 1956. Pacific Sci. 
10(3) :355, fig. 17. 
LOCALITIES: Tonga: 27 specimens from BT 
10. Samoa: 4 specimens from BAS 4; 4, BAS 
7; 4, BAS 12; 2, BBS 11. 
DISCUSSION : In this group of specimens some 
further variations were noted. The differences 
between the specimens from Saipan and those 
described by Coutiere were discussed in Banner’s 
1956 paper. Most of the differences can be 
accounted for by the variation noted in this 
collection. For example, in 10 specimens with 
the small chela intact, 5 had a slightly broad- 
ened dactylus with a fringe of hairs, as 
described by Coutiere, and 5 had the more 
slender and unadorned chela as described from 
Saipan. Further variation was noted in the 
length of the squamous portion of the scapho- 
cerite, with the tip in a few reaching almost 
to the end of the second antennular article, and 
others variously between this maximum and a 
minimum length of less than half the length 
of the article; a few were asymetrical in the 
development of the scale. As is common in this 
