102 



/, Posterior lobe of scaphognathite acutely produced. 

 Stylocerite broad and rounded. Epipodite wanting from 

 the last leg only. Rostrum armed dorsally with 



movable spines only Dichelopandalus Caull. 



/„ Posterior lobe of scaphognathite broadly rounded or 

 truncate. 

 Stylocerite pointed. Rostrum armed dorsally with fixed 

 teeth and sometimes with movable teeth also. 

 g x All the thoracic legs, except the last pair, with an 



epipodite Plesionika Bate 



g. Epipodites absent from all the thoracic legs . . . Parapandalus Borr. 

 e„ External maxillipeds without exopodite. 



Stylocerite broad and rounded. 

 f\ Laminar expansion of the inner border of the ischium 

 of i st pair of legs very large. 

 Antennular flagella very long. Rostrum armed dorsally 



with movable spines only Pandalopsis (A. M.-Edw.) Bate 



ƒ„ Laminar expansion of the inner border of the ischium 

 of i st pair of legs wanting or inconspicuous. 

 g 1 Except the last pair there are epipodites on all the 

 thoracic legs. 

 //j Posterior lobe of scaphognathite truncate. 



Upper margin of rostrum armed with fixed teeth 



as well as with movable spinules Pandalina Calman 



h s Posterior lobe of scaphognathite acutely produced. 

 Dorsal crest and upper margin of rostrum armed 



with movable spinules only Pandalus Leach. 



g % No epipodites on the thoracic legs. 



Stylocerite rather pointed, though rounded at the tip. 



Upper margin of rostrum armed with fixed teeth only Peripandalus de Man 

 d„ Eyes very small, narrower than the eyestalk .... Dorodotes Bate 

 c„ Rostrum movably articulated with the carapace . . . Pantomus A. M.-Edw. 

 ó, Carapace with longitudinal carinae, in addition to the 

 postrostral crest : integument very hard and rigid. 



c l Legs of the 2 nd pair very unequal . . ". Heterocarpus A. M.-Edw. 



c 2 Legs of the 2 nd pair equal, 6-jointed Heterocarpoides de Man. 



c7, Carpus of 2 nd legs triarticulate. 



Carapace armed, besides with the antennal and the branchio- 



stegal, also with a supra-orbital spine Chlorotocella Balss 



a.. Carpus of 2 nd legs biarticulate. 



No supra-orbital spine on the carapace . Chlorotocus A. M.-Edw. 



