HANSEN'S TABULAE VIEW 



341 



CYMOTHOID GROUP. 



/Mandibles with the rather broad, more or less triden- 

 tate cutting edges meeting squarely behind the 

 large upper lip ; the secondary plate and peculiar 

 equivalent for the molar well developed 



First maxillae having the plate of the first joint armed 

 with three spines, that of the third with many 



Second maxillae of moderate size, the three free plates 

 very setose 



Maxillipeds with the ' palp ' rather broad, very setose 





Cirolanidse 



Mandibles with the distal part produced into a long 

 prominent process, the pair much overlapping; the 

 secondary plate and molar evanescent 



First maxillas having the plate of the first joint un- 

 armed, of the third carrying one very long spine 



Second maxillae small and feeble, the free plates almost 

 rudimentary, with few setas 



Maxillipeds with the palp' narrowed, not very setose 

 \ (the antepenultimate joint rather elongate) 



First maxillse having the plate of the first joint un- \ 

 armed, of the third carrying two spines or only one 



Second maxillas feeble, sometimes very small, with one 

 plate or none, the setas very few or none 



Maxillipeds with the ' palp ' rather broad, with no elon- 

 gate joint 



f Corallanidse 



Alcironidaa 



Barybrotidae 



Mandibles with the secondary plate very often (per- \ 

 haps always) visible ; the ' palp ' with no inflated 





2G1 J 



Maxillipeds commonly seven-jointed, sometimes four- f 

 jointed, the last joint in the latter case rather short, 

 obtuse / 



Mandibles with no secondary plate; the 'palp' in the 

 adults with the first joint or both first and second 

 joints inflated 



Maxillipeds always four-jointed, the last joint rather 

 long and narrow, subacute 



Cyrnothoidse 



