. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 121 COLLODES TUMIDUS Rathbun Plate 40, figs. 1 and 2; plate 218, fig. 5 Collodes iumidus Ratiibun, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 569, pi. 41, fig. 1 (tj'pe-locality, Magdalena Bay, Lower California, 12 fathoms; holotype, Cat. No. 2157f, U. S. N. M.). Z)m(7/Iosis.—Carapace mostly smooth; four elevated tubercles forming a cross near the middle. Postorbital lobe curved. Male sternum finely granulate. Description.—Carapace granulate along the posterior and lateral margins, the granules large on the hepatic
. Bulletin - United States National Museum. Science. THE SPIDER CRABS OF AMERICA 121 COLLODES TUMIDUS Rathbun Plate 40, figs. 1 and 2; plate 218, fig. 5 Collodes iumidus Ratiibun, Proc. U. S. Nat. Mus., vol. 21, 1898, p. 569, pi. 41, fig. 1 (tj'pe-locality, Magdalena Bay, Lower California, 12 fathoms; holotype, Cat. No. 2157f, U. S. N. M.). Z)m(7/Iosis.—Carapace mostly smooth; four elevated tubercles forming a cross near the middle. Postorbital lobe curved. Male sternum finely granulate. Description.—Carapace granulate along the posterior and lateral margins, the granules large on the hepatic region and reaching for- ward a little on the branchial and cardiac regions; a few granules also between the orbits. Four tubercles near the middle of the cara- pace at the most elevated portions, one gastric, one cardiac, the other two at the inner angles of the branchial regions. Otherwise the central part of the carapace is smooth. Front bidentate, the teeth triangular, blunt, and separated by a space subequal to either tooth. Postorbital tooth slightly curv- ed, convex forward, shorter than the eye. Basal antennal article broad, inner or lower edge entire, outer edge un- evenly dentate, upper and fig. tumidus, m1le'"(2157i), lower terminal lobes equally left chela, x advanced. Male sternum and elevations of first three abdominal segments finely granulate; otherwise the abdomen of both sexes is nearly smooth. Chelipeds of adult male slightly enlarged. The palm narrows perceptibly near the distal end. Fingers gaping to near the tips, dactylus with an enlarged tooth near the base, fixed finger with a similar tooth marldng the proximal third. Ambulatory legs rather stout. Measurements.—Male, holotype, length of carapace , width mm. Range.—Lower California, Mexico; 10 to 12 fathoms. Material examined.— Middle of east side of Cerros Island; March 12, 1911; Albatross; 1 young female (56221). Magdalena Bay, Lower California; lat. 24° 32' 00
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