A. E. lYrr/7/ Decapod Crustacea of Bermuda. 



in:; 



At Dominica Island, in 1906, Mr. A. H. Verrill obtained a number 

 of much larger perfect specimens, taken in fish-pots, in rather deep 

 water (40-150 fathoms) where it was associated with M. spinosissi- 

 itiitft, of very large size, and other large spider crabs. 



It is a comparatively rare species, recorded by few authors. A. 

 M. -Edwards knew only two specimens, from Martinique, in the 

 Paris Museum. It was not mentioned by Stimpson, nor was it in 

 the Porto Rico collection, studied by Miss Rathbun. It was not 

 represented in the large collections of the National Museum enumer- 

 ated by her in 1892. 



Mithrax (Nemausa) acuticornis (Stimpson). 



Mithnix acuticornis Stimpson, Bull. Mus. Cornp. Zool., ii, p. 116, 1870. A. 



M.-Edw., Miss. Sci. Mex., v, p. 98, 1875. M. J. Rathbun, Amer. Naturalist, 



xxiv, p. 512,. fig. 8, 1900. 

 Nemausa rostrata A. M.-Edw., Miss. Sci. Mex., Part v, i, p. 81, pi. xvii, figs. 



4-4c7, 1875. Miers, Voy. Challenger, Zool., p. 85, 1886 (Bermuda). 

 Mithras (Xemausa) acuticornis M. J. Rathbun, Proc. U. S. Nat. Mus., xv, p. 



260, pi. xxxvii, fig. 1, 1892; Bull. Labr. Nat. Hist. Univ. Iowa, iv, p. 259, 



1898. Brach. and Macr. Porto Rico, p. 66, 1901. 



FIGURE 39. 



This species is characterized by its elongated and narrow carapace, 

 the sharp lateral spines, and especially the unusually long and acute 

 rostral horns. 



Figure 39. Mitln-,'' m-iilicomis ; c, the same, the carapace of a younger speci- 

 men, x about three times. After A. M.- Ed wards. 



Recorded from Bermuda by Miers (Voy. Chall), but not obtained 

 bv later collectors. Florida, West Indies and Gulf of Mexico, 



/ 



shore to 1G4 fathoms. Off Key West, G<> fathoms (Rathbun). 



