of the. 'British SessiU-eyeJ Crustacea.^ 4-71 



Amathilla SaJ/ni* (Leach). 



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

 pressinp; my doubt as to the distinctness of A. an<julosa 

 (Rathkc) from this species, notwithstanding the hif^h authority 

 of (t. (). Sars and Boeck. The dorsal j)rojections in the 

 younp; of -1. homari, whicli swarm on the coast of Wales in 

 summer, are oidy <^radually developed, and tiie same may be 

 said of the other cliaractcrson which these autliors rely. The 

 large mature animals oidy seem to resort to the shore in 

 winter and spring to deposit their young. 



Gamviarus campylops (Leach). Not in the collection. 



Gammarus tenuiinanus (Bate). 



One specimen without telson and third uropods. This is 

 clearly ^^(vra Batei (Norman) female, the male being 

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

 work (vol. ii. p. 515). Norman's name is slightly the older. 

 The figure of the second gnathopod apjjears to belong to 

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

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

 of Ampli. 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.). 



Megavia'ra semiserrata (Bate). Not in the collection. 

 Now Mcera semiserrata. 



Megamo'ra hngimana (Leach) and M. othonis (M.-Edw.). 

 Male and female of Mcvra othonis. 



Megamara? Alder i (Bate). 

 See under Melita jiroximaj ante. 



Megamoira hrevicaudata (Bate). 



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

 ('Cat. des Crust, marins recueillis aux A9ore3'). 



Eiscladus longtcaudatus (B. & VV.). Not in the collection. 

 Now Photis hngicauddtiis. The length of this species is 

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

 which is the size of apparently adult specimens from the 



