. Bulletin - United States National Museum. Science. Fig. ^Dasygtius depres- sus (21873), maxilliped, x and fourth ambulatory legs. Rostrum triangular, tipped with a small, slightly capitate spine. E^'es large, flattened. Basal antennal article with dentate margins, terminating in two teeth, the outer the longer, incurved at tip. Second article (or first movable article) of the antennules exceeding in length the fossa, and in large specimens exceeding the rostrum. Maxil- lipeds rather widely separated; ischium with a shallow sulcus; merus strongly cordiform, very narrow at base. Cheli
. Bulletin - United States National Museum. Science. Fig. ^Dasygtius depres- sus (21873), maxilliped, x and fourth ambulatory legs. Rostrum triangular, tipped with a small, slightly capitate spine. E^'es large, flattened. Basal antennal article with dentate margins, terminating in two teeth, the outer the longer, incurved at tip. Second article (or first movable article) of the antennules exceeding in length the fossa, and in large specimens exceeding the rostrum. Maxil- lipeds rather widely separated; ischium with a shallow sulcus; merus strongly cordiform, very narrow at base. Chelipeds of male stout, granulate; margins of merus tuberculate; palm inflated, subglobular; fingers narrowly gaping at base, finely crenulate in the gape, crenate along meeting edges; dacty- lus with a notch at base. Chelipeds of female weaker than legs, palms not swollen. The ambu- latory legs diminish in the order 3, 2, 4, 1, three and two being nearly the same length; they are granulate and hairy, the first pair conspicuously hairy with a fringe of hair on either side; the hairiness diminishes from the first to the fourth pair, and the granulation diminishes from the proximal to the distal end of each leg; dactyli unarmed. First segment of abdomen armed with a long, horizontal, conical, acute spine. In the male the sides of the last two segments are subparallel, the extremity broadly rounded. In the mature female the last or fused segment is much wider than long, almost covering the sternum laterally, the distal margin straight or slightly concave. Sternum of male flat, except in front of the chelipeds where, in both sexes, there is a smooth swelling and anterior to that a small spine between the maxillipeds. 6'oZor.âNearly white, with a very slight pinkish tinge. (Bell.) Measurements.âMale (21874), length of carapace , width mm. Female (21874), length of carapace 20, width 20 mm. Range.âGulf of California, Mexico; Galapagos Islands. Depth, 6 to fathoms. Materi
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Keywords: ., bookauthorun, bookcentury1800, bookdecade1870, booksubjectscience
