138 Mr. C. Spence Bate on British Edriophthalmous Crustacea. 



Genus 3. Lysianassa (Edwards). 

 Upper antenna furnished with a secondary appendage. First 

 gnathopod simple. Telson simple. 



1. L. Costa (Edwards). Inferior antenna scarcely longer than 



the superior. 

 Plymouth, C. S. B. 



2. L. Audouiniana (mihi). Inferior antenna much shorter than 



the superior. Filamentary appendage to the superior rudi- 

 mentary. 

 Plymouth, C. S. B. 



3. L. Chausica, Edwards (?). Lower antenna longer than the 



upper, and longer than tjje entire animal. 

 Plymouth, C. S. B. 



4. L. marina (mihi). Lower antenna longer than the upper, 



but not half so long as the entire animal. 

 Plymouth Sound, C. S. B. Banff, Mr. Edwards. 



Genus 4. Scopelocheirus (mihi). 

 Upper antenna furnished with a secondary appendage. First 

 pair of gnathopoda terminating in a brush; second, cheliform. 

 Telson double. 



1. S. crenatus. Head furnished with a small rostrum. Upper 

 antenna very large at the base. Secondary filament con- 

 sisting of but one articulation. A deep notch in the second 

 segment of the anterior pleon. 

 Banff, Mr. Edwards. Plymouth, C. S. B. 



Genus 5. Anonyx (Kroyer). 

 First gnathopod subcheliform. Telson squamiform, with a 

 central division. 



1. A. Edwardsii (Kroyer). Lower antenna scarcely longer than 



the upper. 

 Moray Frith, Rev. G. Gordon. Plymouth Sound, C. S. B. 

 Falmouth, TF. Webster, Esq. Banff, Mr. Edwards. 



2. A. minutus (Kroyer). Lower antenna nearly three times as 



long as the upper. The squamiform coxse of the two 

 posterior legs produced so as to cover the two next suc- 

 ceeding articulations. 

 Plymouth Sound, C. S. B. 



3. A. Holholli (Kroyer). The squamiform development of the 



posterior legs not produced so as to cover the two next suc- 

 ceeding articulations. 

 Moray Frith, Rev. G. Gordon. Plymouth Sound, C. S. B. 



