g52 CRUSTACEA. 



Allorchestes from species of Amphithoe which they may resemble, 

 even if the mandibles are not examined. 



Orchestia (Talitrus?) NOVI-ZEALANDI^). 



Feminae : — EpimercB grandes, nudes, spinulis minutis margine armatce. 

 Antennce 2dee dimidii corporis longitudine, setis brevissimis (latitudine 

 antennce plus dimidio breviorihus) , flagello vix longiore quam basis, 

 articidis transversis, numero 25-27. Antennce Imce basi 2darum non 

 dimidio breviores. Pedes lmi validiusculi, elongati; 2di paulo bre- 

 vwres, artieulo 5to obtuso, fere breviore quam precedens, digito mi- 

 nuio, in margine superno affixo. Pedes 10 postici densd setulosi, 

 8etulis diametrum artieuloriim longitivdine partim csquantibus, 6 

 postici valde incequi, 7mis duplo longioribus quam 5ti, artieulo primo 

 latissimo. 



Female : — Epimerals large, naked, edged with minute spinules. Infe- 

 rior antennae half as long as the body; setae very short (not half the 

 diameter of the antenna), flagellum scarcely longer than basal part, 

 joints transverse, 25 to 27 in number. Superior antennae more than 

 half the length of base of inferior. Anterior feet stout, elongate ; 

 second pair slightly shorter, the fifth joint a little smaller than the 

 preceding, finger minute. Feet of five posterior pairs densely setulose 

 along the margin, the setules in part as long as diameter of joints ; 

 of the three posterior pairs, the last longest, the first but half the 

 last, the basal joint very broad. 



Plate 56, fig. 5 a, animal, enlarged; b, under lip; c, mandible; d, first 

 pair of maxillae ; e, second pair of maxillae ; /, maxillipeds ; g, part of 

 flagellum of second antennae ; h, extremity of first pair of legs ; i, ibid, 

 of second pair; k, ibid, of third pair; Z, ibid, of fifth pair. 



Bay of Islands, New Zealand. Found under sea-weed along the 

 shores. 



Length, ten lines. The epimerals are moderately long, and the 

 fifth are anteriorly but slightly shorter than the fourth. The superior 



