. Decapod crustacea of Bermuda. Decapoda (Crustacea) -- Bermuda Islands. A. E. Verrill—Decapod Crustacea of Bcnnmln. l-'/i form has the carapace more strongly areolated and appears rougher, owing to the relatively larger granules and more elevated tuber- cles. The two frontal teeth are more acute and have a small lobe or shoulder on the outer edge, while those of C. Bairdii are obtuse at tips and have no lobe. The carapace has the posterior lateral spines sharper, longer, and farther back, in the Atlantic form, and the sides are more rapidly contracted behind the spines ; the crests of the ehe
. Decapod crustacea of Bermuda. Decapoda (Crustacea) -- Bermuda Islands. A. E. Verrill—Decapod Crustacea of Bcnnmln. l-'/i form has the carapace more strongly areolated and appears rougher, owing to the relatively larger granules and more elevated tuber- cles. The two frontal teeth are more acute and have a small lobe or shoulder on the outer edge, while those of C. Bairdii are obtuse at tips and have no lobe. The carapace has the posterior lateral spines sharper, longer, and farther back, in the Atlantic form, and the sides are more rapidly contracted behind the spines ; the crests of the ehehe are higher and the edge more convex, the third tooth from the front being longest, while in typical C. Bairdii the second is longest. These teeth in the former are angular or carinate on the O O front side, while in the latter they are evenly convex ; they are granulated in both. The outer surface of the chelae has fewer but O larger tubercules in the Atlantic form, and the lower edge is bevelled. Figure 47. — Cycloes Bairdii, var. atlantica, from Bermuda, under side, x about 1. Phot. A. H. V. and has two rows of small rounded granule-like denticles, while in O. Bairdii it is flatter, with two rows of larger obtuse denticles. The large tooth, near the lower proximal end, is acute-triangular in O. Bairdii ; broadly rounded and obtuse in the Atlantic form. There are various other minor differences, but whether they are constant or not is uncertain, on account of the small number of Atlantic specimens available for comparison. I have not been able to compare the male appendages. There is much difference in the abdomen, but this is evidently largely due to the immaturity of the 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 may not perfectly resemble the original Verrill, A. E. (Addison Emery), 1839-1926. New Haven, Conn. ,
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License: Licensed
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Keywords: ., bookcentury1900, bookdecade1900, bookpublishernewhavenconnthetut
