BY CHARLES CHILTON, M.A. 1037 



very short setaj, a few longer cues ax-e scattered over the propodos, 

 carpus and meros, 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 defined. Both the carpus and propodos bear on their inferior 

 margins, besides a few long setse of the oixlinary kind, a number 

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

 the second gnathopodn 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 antennae 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 whei-e 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, N. 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. 



M(ERA FESTIVA. N. Sp. 



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

 I obtained in Sydney Harbour several specimens of a species of 



Mtera which seems to be new. 



The following is a description of my specimens : — 



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



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



