BY CHARLES CHILTON, M.A. 1037 



very short setse, a few longer ones are scattered over the propodos, 

 carpus and nieros, the greater number being found on the carpus. 

 Posterior gnathopoda very long and slender, propodos not so long 

 as carpus, sub-quadrate, nearly three times as long as broad, palm 

 not define']. Both the carpus and propodos bear on their inferior 

 margins, besides a few long seta? of the ordinary kind, a number 

 of densely packed fine straight hairs, similar to those found on 

 the second gnathopoda of some species of Lysianassa. 



Atylus megalophtiialmus. Haswell. 



Cat. Aust, Crust., p. 244 ; Proc. Linn. Soc, N. S. Wales, IV., 

 p. 102, PI. VI., fig. 4. 



Numerous specimens from Sydney Harbour. The cephalon is 



produced between the upper antenna? into a short rostrum about 



three-fourths as long as the first joint of the peduncle ; depth 



towards the distal end, where it is greatest, about one-third the 



length, extremity rounded. The telson, which has not yet been 



described, is oblong, broadest proximally where it is almost as 



broad as long ; postero-lateral angles rounded ; cleft for about 



half its length. It is somewhat curved so that if seen from 



above without being compressed it may appear narrower than it 



really is. 



Atylus lippus. Haswell. 



Cat. Aust. Crust., p. 243 ; Proc. Linn. Soc, X. S. Wales, IV., 

 p. 328, PI. XX., fig. 1. 



Three specimens from Sydney Harbour, taken in company with 

 the preceding species. The antennae agree closely with the 

 description given in the catalogue, but the eyes appear quite 

 regular, and the telson is rather oblong than triangular, differing 

 from that of the preceding species only in being somewhat 

 narrower. 



MCERA FESTIVA. N. sp. 



[See plate XLVL, fig. 2, a. b. c] 

 I obtained in Sydney Harbour several specimens of a species of 



Maira which seems to be new. 



The following is a description of my specimens : — 



Male. — Superior antennas about as long as the cephalon and 



pereion, second segment of the peduncle as long as the first but 



