BY WILLIAM A. HA8WELL, M.A., B.SC. 257 



joint of peduncle very stout, longer than the others, second and 

 jliird joints very short ; flagellum longer than peduncle, slender ; 

 appendage nine-jointed. Inferior antenna) longer than the 

 superior pair ; peduncle subequal with that of the latter ; flagellum 

 thrice as long as the peduncle. Anterior gnathopoda long, 

 filiform ; basos narrow, compressed ; ischium meros and carpus 

 all sub -cylindrical and slender ; propodos about one third of the 

 length of the carpus, irregularly ovoid, narrowed clistally, its 

 ventral border armed with curved seta3. Posterior gnathopoda 

 elongated, slender, but stouter than the anterior pair ; propodos 

 nearly twice as long as carpus, sub-quadrate, nearly as broad as 

 long, the palm concave, the ventral and distal angle prominent, 

 acute. Third pair of pereiopoda much shorter than the rest ; 

 the basos circular, serrated posteriorly. Basos of following pair g 

 oval, non-serrated ; meros, carpus and propodos hairy . Fourth 

 and fifth pairs of pleopods with the rami slender, styliform ; ram 1 

 of the last pair broad-lanceolate, acute. Lateral halves of the 

 telson broad-lanceolate, pointed. 



Length four lines. 



Hob. Howick Group, N.-E. Australia (M.-M.) 



Sub-fam. AMPELISCADES. 



Grenus Ampelisca, Kroyer. 



Ampelisca australis, sjj. nov. (PL YIIL, fig. 6.) 



Superior antennae as long as the cephalon and the first segment 

 of the pereion; first joint of peduncle short, stout; second longer 

 and narrower ; third not distinguishable from the articuli of the 

 flagellum ; flagellum slender, composed of elongated articuli . 

 Inferior antennae about twice as long as the superior ; third 

 •segment of the peduncle short, stout ; fourth narrow and elongated 

 (as long as the cephalon) ; fifth rather shorter than fourth ; 

 flagellum equal in length to the first two segments of the peduncle, 

 of about ten slender articuli. Maxillipedes with the dactylos stout, 



