BY WILLIAM A. IIASWELL, M.A., B.SC. 323 



Genus Lysianassa, Edwards. 



Lysianassa australiensis, sp. nov. (PL XVIIL, fig. 3.) 



Resembles L. nitons, mihi, but lias the e} T es smaller, and the 

 propodos of the posterior gnathopoda narrower, with the dactylos 

 rudimentary. 



There are two varieties of this form, the one with the inferior 

 antenna? short, and the other with these organs as long as the 

 body ; but I am unable to state whether or no these may be 

 sexual characters. 



Sab. Port Jackson (common). 



Sub-fam. STEGOCEPHALIDES. 



Genus Montagua, Spence Bate. 



Montagua Miersii, sp. nov. (PL XXIV., fig. 4.) 



Coxae of the posterior gnathopoda and the two first pairs of 

 pereiopoda much deeper than their respective segments. Superior 

 and inferior antennae subequal in length, equal in length to the 

 cephalon and first three segments of the pereion ; the peduncles 

 stout, rather shorter than the flagella. Anterior gnathopoda 

 small, the propodos subquadrate, the palm nearly transverse. 

 Posterior gnathopoda with the propodos large, .cordif orm ; the 

 palm oblique, undefined. Pereiopoda subequal, rather stout. 

 Colour yellow with brown markings. Length about 3/20ths in. 



Sab. Port Jackson. 



I have named this species after Mr. E. J. Miers, F.L.S., of the 

 British Museum. 



Montagua longicornis, sp. nov. (PL XXIY., fig. 5.) 



Coxae scarcely so deep as in the preceding sj)ecies. Superior 

 antennae as long as the cephalon and pereion. Inferior antenna) 

 a little shorter than the superior. Anterior gnathopoda with the 

 propodos very small, subquadrate, the palm nearly transverse. 



