A. E. Ver7-iU — Decapod Crustacea of Bermuda. 327 



Sesarma Ricordi M.-Edw. 



Senarma Ricordi H. M.-Edw., Ann. Sci. Nat., ser. 3, vol. xx, p. 183, 1853. 



Kingsley, Proc. Acad. Nat. Sci., Philad., for 1880, p. 217. M. J. Rathbun, 



Synopsis Sesai'mse, Proc. Biolog. Soc. Washington, xi, p. 91, 1897 (descr. 



and synon.). 

 Brachy. and Macr. Porto Rico, p. 18, 1901 (descr.). Verrill, these Trans., 



X, p. 574, 1899. 

 Sesarma angustipes Stimpson {pars) Smith, these Trans., ii, p. 159, 1869 



[non Dana, t. M. J. Rathbun). 

 Sesarma einerea Stone, in Heilprin, op. cit. , 1898. Rankin, op. cit., p. 526, 



1900 (non Say, sp.). 

 Sesarma Sfimjisonii Miers, 1881, not of 1886 (t. Rathbun). 



Plate X, Figure 2. Plate XI, Figure 3, var. 



This common species is veiy variable in colors in life. The cara- 

 pace is usually irregularly and variously mottled with olive-brown, 

 olive-green, or reddish brown on a yellowish green or light olive 

 ground color, in most cases pretty closely imitating the varied colors 

 of the dead algae and stained stones among which it most commonly 

 lives. 



Miss Rathbun, who has examined many of the original types, 

 unites several nominal species with this. It seems to be distinct 

 from the true einerea and angustipes, with both of which it has 

 often been confused. Probably the real einerea does not occur at 

 Bermuda.* 



Tlie carapace of the typical variety appears nearly smooth to the 

 eye over most of the surface, but under a lens shows minute 

 sparse granules and hairs, which become more evident anteriorly and 

 on the front, while on the sides, posteriorly, there are faint oblique 

 plicae. The lateral margins are nearly straight or only slightly 

 sinuous ; the front is a little sinuous on the edge with a slight 

 median notch. The carapace is only slightly broader than long. 



* Dr. Rankin has kindly sent me for examination the specimens that he 

 recorded (1900) as S. einerea. They prove to be S. Ricordi. 



