344 A. E. VerrUI — Decapod Crustacea of Bermuda. 



B'. Marginal teeth thickened, with front edge not much inclined forward; 4th 

 and 5th squarrose. Eatio of length to breadth of carapace about 1:1.30. 



Edge of front thickened, distinctly four-lobed americanus* 



A'. A distinct transverse groove near distal end of carpus of cbelipeds. 



C. Third segment of male abdomen reaches coxal joint of 5th pair of legs; 

 front not grooved. Fingers dark. Size rather large. 

 D. Third marginal tooth broadest, arcuate posteriorly ; carpus of chelipeds 



smooth with deep groove occidentalis 



D'. Tbird marginal tooth dentiform , acute ; carpus of chelipeds roughened. 



serratus 



C. Third segment of male abdomen does not reach the coxal joint of 5th 



pair of legs. Front prominent, 4-lobed, grooved. Fingers pale ; size 



small bennudensis 



Eupanopeus Herbstii (Milne-Edwards), M. J. Eathbun. 



Cancel' panope Say, Jour. Acad. Nat. Sci. Phila., i, pp. 58, 447, pi. 4, fig. 3, 

 1817. 



Panopeus Herbstii H. M. -Edwards, Hist. Nat. Crust., i, p. 403, 1834. DeKay, 

 Crust, of N. Y., p. 5, pi. ix, fig. 26 (poor), 1844. Gibbes, Proc. Boston Soc. 

 Nat. Hist., ii, pp. 63. 69, 1845. Stimpson, Amer. Jour. Sci. (2), xxix, p. 

 444, 1860. Smith, Proc. Boston Soc. Nat. Hist. , xii, p. 276, 1869 ; these 

 Trans., ii, p. 34, 1869; Eept. U. S. Comm. Fisheries for 1871-72 (1874), p. 

 547. Verrill, op. cit., p. 472 [178J, 1874. A. M. -Edwards, Miss. Sci. 

 Mexique, pt. 5, i, p. 308, pi. Ivii, fig. 2, 1880. E. Eathbun, Fishery Indus- 

 tries of U. S., section i, p. 772, 1884.' Benedict and M. J. Eathbun, The 

 Genus Panopeus, Proc. U. S. Nat. Museum, xiv, p. 358, pi. xis, figs. 1, 2; 

 pi. xxili, figs. 10-12. 1891. 



Eupanopeus herbstii M. J. Eathbun, Bull. Labr. Nat. Hist. State Univ. of 

 Iowa, iv, p. 273,1898; Proc. Wash. Acad. Sci., ii, p. 140, 1900; Amer. 

 Naturalist, xxxiv, p. 188, 1900; Brach. and Macr. Porto Eico, p. 28, 1901. 



Figures 14, 6, 15. Plate XV, Figures 1, 2, 3 ; Varieties. 

 The common and more typical form of this species, which is gen- 

 erally distributed along the eastern coast of the United States, south 

 of Cape Cod, especially on oyster beds, seems to be rather common 

 in Bermuda. Most of the specimens that I have seen belong to this 

 variety. This form, or variety, regarded as typical (var. Herbstii) 

 usually has the postero-lateral margins or flanks of the carapace 

 either straight or slight concave, and convergent, while in the other 

 varieties they are usually distinctly convex, giving the posterior half 

 of the outline a more elliptical form. The legs are rather short. 

 The marginal teeth are inclined forward and acute, the third tooth 

 being only a little broader and less acute than the rest, with the 



* Not positively known from Bermuda, but perhaps confused with Herbstii, 

 from which it differs but slightly. 



