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Family Alpheidae 199
17. (13) Minor first chela with fingers slightly, if at all, more than half as long as palm;
proximal segment of carpus of second pereopod much shorter than second segment
(fingers of minor first chela not "balaeniceps"-shaped in male) A. schmitti
Minor first chela with fingers about as long as palm; proximal segment of carpus of
second pereopod longer than second segment 18
18. (17) Movable finger of major first chela regularly and highly arched throughout length of
superior margin; fingers of minor first chela "balaeniceps"-shaped in male; second
segment of carpus of second pereopod subequal to fifth segment in length
A. bouvieri
Movable finger of major first chela not strongly convex in proximal part of superior
margin; fingers of minor first chela not "balaeniceps"-shaped in male; second
segment of carpus of second pereopod distinctly longer than fifth segment
A. nuttingi
19. (11) Rostrum dorsally carinate or subcarinate; proximal segment of carpus of second
pereopod shorter than second segment; dactyli of third and fourth pereopods
subspatulate A. floridanus
Rostrum dorsally convex, not subcarinate; proximal segment of carpus of second
pereopod longer than second segment; dactyli of third and fourth pereopods not
subspatulate A. paracrinitus