BY WILLIAM A. HASWELL, M.A., B.SC. 339 



G-enus MiCRODEUTERorus, Costa. 



Microcleuteropus Mortoni, sp. nov. (PI. XXII., fig. 2.) 



Anterior gnathopoda large ; meros produced at its inferior and 

 distal angle into a long sharp spine which reaches beyond the distal 

 extremity of the carpus ; carpus larger than the propodos, oblong, 

 more than twice as long as broad, the upper border convex, the 

 lower straight ; propodos nearly as broad as the carpus at the 

 base, but narrowing slightly distally ; dactylos two-thirds of the 

 length of the propodos, minutely dentate on its inner border. 

 Last pair of pereiopoda longer than the others. Posterior 

 pleopoda short, the rami tipped with setae which are longer and 

 more slender than those on the preceding pairs. Telson conical, 

 tipped with about half-a-dozen setae similar to those on the 

 posterior pleopoda. Length 3/10ths in. 



Sab. Clark Island, Port Jackson, 



I have named this species after Mr. Alex. Morton, a very 

 intelligent and willing collector, to whose assistance I have 

 frequently been indebted. 



Microcleuteropus tenuipes, %p. nov. (PI. XXII., fig. 1.) 



Eyes round. Superior antennae as long as the cephalon and 

 first six segments of the pereion ; first segment of the peduncle 

 scarcely as long as the cephalon, second half as long again, and 

 much more slender ; third about one-fifth of the length of the 

 second ; flagellum longer than the peduncle, of about eighteen 

 elongated articuli, each tipped distally above and below with a 

 few short hairs. Inferior antennae about f our-fifths of the length 

 of the superior pair, sub-pedif orm, the peduncle ornamented below 

 with fasciculi of longish slender hairs ; flagellum shorter than the 

 last segment, ornamented with a few slender hairs on each articulus, 

 and with a few stouter hooked hairs at the apex. Anterior 

 gnathopoda with the carpus and propodos nearly equal in length, 

 the former sub-triangular, the latter ovate ; palm nearly 



