ATTSTBALIAN MALACOSTBACA. 261 



scarcely two-tliirds of the length of the superior pair ; the flagellum 

 a little longer than the last segment of the peduncle. Anterior 

 gnathopoda with the propodos ovate, palm undefined, hairy. 

 Posterior gnathopoda having the carpus subtriangular ; the 

 propodos ovate, twice as long as broad, twice as long as that of 

 the anterior pair, the palm oblique, slightly excavate, with four 

 small teeth ; the dactylos rather more than one-third of the length 

 of the propodos. Posterior three pairs of pereiopoda rather 

 stout, serrated and bordered with seta). Kami of posterior 

 pleopoda short and broad, truncate, serrated and setiferous. 

 Length t/V in. 



Port Jackson. 



Genus Wyvillea, Haswell. 



Coxa) scarcely so deep as their respective segments. Superior 

 antenna) shorter than the inferior pair, appendiculate. Mandibles 

 with an appendage. Maxillipedes exunguiculate, squamiform 

 processes rudimentary. Gnathopoda subchelate, posterior pair 

 very large. Posterior pleopoda uniramous the ramus large. 

 Telson simple, undivided. 



458. Wyvillea longimanus. 



Wyvillea longimanus, Haswell, 1. c, p. 337, pi. xxii., fig. 7. 



Eyes round. Superior antenna) rather longer than the cephalon 

 and first three segments of the pereion ; first segment of the 

 peduncle short, thick ; second twice as long ; third rather smaller 

 than the second ; flagellum rather longer than the last segment 

 of the peduncle, of seven articuli ; appendage nearly one-fourth 

 of the length of the flagellum. Inferior antennae stout, sub- 

 pedif orm, with the peduncle equal in length to the superior pair ; 

 flagellum equal in length to the last segment of the peduncle, 

 armed with hairs which are slightly hooked at the points. 

 Anterior gnathopoda small ; propodos ovoid, narrowed distally ; 

 palm nearly longitudinal. Posterior gnathopoda very large ; 

 carpus short, subquadrate ; propodos elongated, four times as 

 long as broad, curved forwards, a blunt tooth at the proximal 

 and another at the distal end of the concave posterior border ; 

 dactylos as long as the propodos. Pereiopoda all short, broad, 

 bordered with seta?, the two anterior pairs equal, shorter than 



