. Decapod crustacea of Bermuda. Decapoda (Crustacea) -- Bermuda Islands. 330 A. E. Yen-ill—Decapod Cruxtact'it of Ili-nn udn. form, are even less granulate*!.* Indeed, tin- latter arc scarcely more granulated than the ordinary form of /,'/V,</v//. However, the front of AS. cincrta is narrower and more arched than in -s'. A'/Vn/v// ; its lower margin is less sinuous, narrows more \\aid the ends, and is less turned up at the ed-e. so lhat it is less eoneaxc aliove. The orbital notch is not so deep. Still these differences .-m- l»ut slight. The carapace seems to lie slightly less convex. Th
. Decapod crustacea of Bermuda. Decapoda (Crustacea) -- Bermuda Islands. 330 A. E. Yen-ill—Decapod Cruxtact'it of Ili-nn udn. form, are even less granulate*!.* Indeed, tin- latter arc scarcely more granulated than the ordinary form of /,'/V,</v//. However, the front of AS. cincrta is narrower and more arched than in -s'. A'/Vn/v// ; its lower margin is less sinuous, narrows more \\aid the ends, and is less turned up at the ed-e. so lhat it is less eoneaxc aliove. The orbital notch is not so deep. Still these differences .-m- l»ut slight. The carapace seems to lie slightly less convex. The chehe are essentially the same in both, and the carpal joint is roughened in the same way. The incrus joints of tlie are about equally flattened in both; the lirush of hairs mi I lie under. Figure 8. — cinerea (t'rm Florida i. slightly enlarged. Phot. A. II. side of the- last two joints is nearly 1 he same in both, though per- haps a little smaller, and with shorter hairs in & cinerea. The differences are s,> slight that it seems not improbable that >'. cinerea is another semiterrestrial race or subspecies that has been derived from S. Jft (e. g., S. ]!/» rti, an arboreal West Indian species) must have been originally derived from amphibious or aquatic species, but the dif- ferentiation has gone farther in some than in others. Doubtless they all go into the sea to breed, and probably they all have similar zo«"-a and megalops larval stages. But in the case of the Bermuda forms, it is easv TO believe that they have acquired different breeding habits or different breeding * In Miss Eathbun's analytical table of Sesarmce (Synopsis American Sesarmze, Proc. Biolog. Soc. Washington, :;i. pp. 90, 91, 1897), the smoothness of the suprafrontal lobes, "smooth or nearly so," is made a diagnostic character for S. Bicordi, while S. cinerea is put in a group having the suprafrontal lobes " tuberculate or granulate,'' and in a subgroup having
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