of the ^British Sessile-eyed Crustacea.^ 471 



Amathilla Sahini (Leach). 



Now A. homari (Fabr.). I take this opportunity of ex- 

 pressing my doubt as to the distinctness of A. angulosa 

 (Rathke) from this species, notwithstanding the high authority 

 of G. O. Sars and Boeck. The dorsal projections in the 

 young of A. homari, which swarm on the coast of Wales in 

 summer, are only gradually developed, and the same may be 

 said of tlie other characters on which these authors rely. The 

 large mature animals only seem to resort to the shore in 

 winter and spring to deposit their young. 



Gammarus campylops (Leach). Not in the collection. 



Gammarus tenuimanus (Bate). 



One specimen without telson and third uropods. This is 

 clearly Mcera Batei (Norman) female, the male being 

 M. multidentata of the Supplement to Bate and Westwood's 

 work (vol. ii. p. 5L')). Norman's name is slightly the older. 

 The figure of the second gnathopod appears to belong to 

 a different species ; that of tiie entire animal is more correct, 

 as also are the description and figures in the Brit. Mus. Cat. 

 of Amph. Crust, p. 214, pi. xxxviii. fig. 2. 



Gammarus Edwardsii (M.-Edw.). Not in the collection. 

 Considered by Nebeski to be a variety of G. locusta (Linn.). 



Megamcera semiserrata (Bate). Not in the collection. 

 Now Mcera semiserrata. 



Megamcera longimana (Leach) and M. othonis (M.-Edw.). 

 Male and female of Mcera othonis. 



Megamcera'? Alderi (Bate). 

 See under Melita jjroxima^ ante. 



Megamcera hrevicaudata (Bate). 



Is Elasmopus rapax (Costa) female, as stated by Barrois 

 (' Cat. des Crust, marins recueillis aux A9ores '). 



Eiscladus longicaudatus (B. & W.). Not in the collection. 

 Now Photis longicaudatus. The length of tliis species is 

 given as ^ inch, while Sars says it scarcely exceeds 4 millim., 

 which is the size of apparently adult specimens from the 



