I. '08. 



13. 



B. Antennular flagella thin, com- 

 pressed and internally chan- 

 nelled, throughout their length, 

 thus forming a tube when 

 closely approximated ; two ar- 

 throbranchs and an epipod on 

 fourth pair of pereiopods, 



II. No scale on inner border of first 

 segment of antennular peduncle ; 

 first joint of mandibular palp 

 much longer than second ; second 

 maxillipede with the merus very 

 broad and foliaceous ; rostrum 

 very short, with only one dorsal 

 tooth, .... 



Solenocera (p. 20). 



Amalopenaeus. 



One species of Penaeus, P. caramote (Risso),^ has been re- 

 corded from British waters. Leach reported two specimens 

 from the Welsh coast, and Cocks stated that it was found at 

 Falmouth in the stomachs of cod and haddock. These records 

 are more than fifty years old, and, in the absence of any recent 

 information, it is doubtful if the species should be retained in 

 the British list. P. caramote is a common Mediterranean 

 species. 



Genus Amalopenaeus, Smith. 



Amalopenaeus, Smith, 1882. 



This genus bears the closest possible resemblance to 

 Gennadas, Spence Bate (1881 and 1888), but is distinguished 

 from it by the total absence of podobranchs on the pereiopods. 

 The gill formula is : — 





vn. 



VIIL 



IX. 



X. 



XL 



XIL 



xin. 



XIV. 



Podobranchiae, 



ep. 



1+ep. 



ep. 



ep. 



ep. 



ep. 



ep. 



, 



Arthrobranchiae, 



1 



2 



2 



2 



2 



2 



2 



... 



Pleurobranchiae, 



... 





1 



1 



1 



1 



1 



1 



In Gennadas the formula, as determined from an examina- 

 tion of the type specimen of G. parvus, is : — 



— 



vn. 



vm. 



IX. 



X. 



XL 



xn. 



XLLL 



XIV. 



Podobranchiae, 



ep. 



l+ep. 



1 + ep. 



1+ep. 



1+ep. 



1+ep. 



ep 



... 



Arthrobranchiae, 



1 



2 2 



2 



2 



2 



2 



... 



Pleurobranchiae, 





1 



1 



1 



1 



1 



1 



For synonymy see Senna, 1903, 



