. Decapod Crustacea of Bermuda. Their distribution, variations, and habits. Decapoda (Crustacea). 410 A. E. Verrill—Decapod Crustacea of Bermuda. area. The four antero-lateral spines are usually all similar in size, simple, and mostly acute and curved forward, but the anterior one is often a little shorter than the 2d and rather obtuse; the 2d and 3d are always acute, with the tips bent forward; the 4th is often smaller and more conical and less acute. The surface of the carapace and chelipeds is polished and shining, with no indications of hairs or gran ul us. The chelipeds of the adult males
. Decapod Crustacea of Bermuda. Their distribution, variations, and habits. Decapoda (Crustacea). 410 A. E. Verrill—Decapod Crustacea of Bermuda. area. The four antero-lateral spines are usually all similar in size, simple, and mostly acute and curved forward, but the anterior one is often a little shorter than the 2d and rather obtuse; the 2d and 3d are always acute, with the tips bent forward; the 4th is often smaller and more conical and less acute. The surface of the carapace and chelipeds is polished and shining, with no indications of hairs or gran ul us. The chelipeds of the adult males are relatively large and strong, subequal, with the claws gaping. The dactyl is curved, denticulate only distally, with a strongly excavate tip, and it bears a strong tooth about the middle; the thumb has a broader denticulate tooth toward the base. In the voun^ these teeth are Figure 42.—Mithrax forceps, hirsutipes, adult male from Bermuda, under side, about nat. size. Phot. A. H. Verrill. The carpus and chelse are smooth, with no tubercles except a small denticle on the inside edge of the carpus ; the merus bears two large acute spines on the inner margin, and about 4 or 5 much smaller, obtuse ones on the outer margin ; the upper surface may have a few minute ones, or in adults a row of two or three obtuse ones. The ambulatory legs are rough with small short spines and long unequal stiff hairs; the dactyls are strong, incurved, with sharp tips; there is a prominent articular plate at the superior distal end of the propodus. The basal antennal plate is wide and thick, tridentate; the outer tooth, Avliich is much the largest, is broad and obtuse, its base occupying about half the width of the plate; the next is not more than half as large and subacute; it is separated from the still smaller. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations m
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Keywords: ., bo, bookcentury1900, bookdecade1900, booksubjectdecapodacrustacea
