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364 Family Paguridae
12. (11) Eyestalks moderately to noticeably stout with definitely dilated corneas; minor
chela simply ornamented dorsally with numerous rounded, slightly appressed to
spiniformtubercles ....P. politus
Eyestalks slender, curved slightly outward, cornea only very slightly dilated; major
chela with prominent, sometimes strongly elevated median single or double rows of
spines . P. stirnpsoni
13. (11) Eye scales triangular; eyestalks equally swollen at base and cornea; rostrum obtuse
but definitely exceeding obsolescent lateral projections; major chela 3 or more times
longer than wide P. piercei
Eye scales rounded distally; eyestalks with cornea dilated, broader than base;
rostrum obtuse but about equalling lateral projections; major chela 2.5 (or less)
times longer than wide 14
14. (13) Chelipeds subcylindrical, relatively smooth on lateral surface; palm lightly crested
and minutely dentate along lateral margin, dorsal surface minutely granulate and
with 2 incomplete rows of subspinous tubercles and scattered smaller ones; dorsal
surface of eye scale shallowly excavated P. longicdrpus
Chelipeds not subcylindrical, relatively spiny on lateral surface and setose; palm
with more or less diagonal rows of spines oil dorsal surface and with irregularly but
closely set plates near base of immovable finger and occasionally on dactylus, spine
or tubercle usually arising from center of each plate; not shallowly excavated on
dorsal surface P. defehsus