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202 Family Alplieidae
8. (7) Ocular teeth slender, not much broader than rostrum; first abdominal pleuron of
male without hooklike tooth; stylocerite slightly overreaching distal end of basal
antennal segment; major first chela not noticeably twisted, armed with stout spine at
distal end of palm S. mcclendoni
Ocular teeth stout, distinctly broader than rostrum; first abdominal pleuron of male
armed with hooklike tooth; stylocerite not reaching as far as distal end of basal
antennal segment; major first chela twisted, palm terminating distally in spine-tipped
lobe S. sanctithomae
9. (7) Lateral spine of basicerite not reaching tip of scaphocerite (ocular teeth at least as
long as broad; dorsal spines of telson arising from dorsal surface; major first chela
not strongly twisted, palm sharply spinous distally; fingers of minor first chela
subequally bidentate distally; third pereopod without flanges on merus and carpus).
S. brooksi
Lateral spine of basicerite reaching nearly to, or beyond, tip of scaphocerite (fingers
of minor first chela bidentate distally; ocular teeth with lateral margins straight or
slightly concave; telson with lateral margins nearly straight; antennular peduncle
stout, overreaching scaphocerite by about half of distal segment, stylocerite broad).
S. bousfieldi
10. (6) Lateral spine of basicerite reaching nearly to, or beyond, tip of scaphocerite (fingers
of minor first chela subequally bidentate distally) 11
Lateral spine of basicerite falling considerably short of tip of scaphocerite (palm of
major first chela terminating distally in tubercle armed distally or distoventrally with
small, sharp tooth) 12
11. (10) Ocular teeth subacute, only slightly broader than rostrum; palm of major first chela
terminating distally in acute projection 5. herricki
Ocular teeth rounded, much broader than rostrum; palm of major first chela
terminating distally in tubercle armed distoventrally with small, sharp tooth
S. pandionis
12. (10) Basicerite rounded or obtuse dorsally (movable finger of major first chela barely
overreaching normal immovable finger) S. longicarpus
Basicerite rectangular or acute dorsally ....13
13. (12) Movable finger of minor first chela broadly tridentate distally in extensor aspect;
exopod of uropod armed with 3 or 4 fixed teeth and 1 or 2 movable spines at distal
end of outer margin .....5. paraneptunus
Movable finger of minor first chela simple or bidentate distally; exopod of uropod
armed with 8-17 fixed teeth on outer margin (scaphocerite with blade; distal tubercle
on palm of major first chela armed distally) S. goodei