23 I 



24 



25 



26 



B. W. Ktmkel, 



Pereiopods 1—5 not subchelate Podoceropsis 



Pereiopods 1—5 subclielate Isaea 



(Lower lip with anterior margin of outer plate in- 

 cised ; pereiopods 1 and 2 with spinning glands ; 

 uropod 3 uncinate 25 



y Not with these characters 26 



I Antenna 1 without accessory ilagellum .... Amphithoe 



1^ Antenna 1 with accessory ilagellum Grubia 



Antenna 1 without accessory flagellum ; antenna 



2 with Ilagellum not spatulate Ericthonius 



Antenna 1 with accessory flagellum ; antenna 2 



with spatulate flagellum Chelura 



Lysianassa punctata (O. G. Costa, 1840), Stebbing, 1906. 



1840. Caliisoma punctata. O. G. Costa, Fauna Reg. Napoli, 

 Crost., Cat. p. 5. 



1906. Lysianassa punctata. Stebbing, Das Tierreich, Lief. 21, 

 p. 40. 



Eyes large, compound, reniform, ocelli large and not crowded 

 together, pigmented in specimens preserved in alcohol. 



First antennae very short ; first joint of peduncle twice as long 

 as second, third joint shorter than second ; principal flagellum made 

 up of about 10 joints, about as long as peduncle ; accessory flagellum 

 composed of 4 joints, about half as long as principal flagellum. 

 Second antennae shorter than first and more slender ; flagellum 

 shorter than peduncle, made up of 5 joints ; fourth and fifth joints 

 of peduncle subequal ; third joint shorter than fourth. 



Mandibles with body rather slender ; cutting edge not denticulated ; 

 palp long, 3-jointed, third joint slender and not quite as long as 

 second, provided with several spinules apically ; molar tubercle 

 wanting. Lower lip with inner plates small and rounded ; outer 

 plates triangular, much longer than broad. First maxillae with inner 

 plates very small ; outer plates with branched spines on distal margin ; 

 palp made up of 2 joints, of which the first is very short and the 

 second has a serrated, blunt distal end. Second maxillae with inner 

 plate much broader than outer and of about same length, broader 

 at distal end which is oblique and provided with spinules. Maxil- 

 lipeds with 3-jointed palp having terminal dactyl-like spine ; second 

 joint rather long and slender, with slender spinules on inner margin ; 

 third joint with long spinules apically; inner plates with 3 teeth on 

 round distal margin, fine cilia on inner margin ; outer plates moder- 



