AUSTKALIAN MALACOSTEACA. 221 



402. Allorchestes G-amardii. 



Amphithoe Gaimardii, Edw., Hist. Nat. Crust., iii., p. 37. 



Allorchestes Gaimardii, ? Dana, U.S. Explor. Exjied., Crust., 

 ii., p. 884, pi. lx., fig. 1 ; Spence Bate, Cat. Amph., p. 41, pi. vi., 

 fig. 9. 



Eyes oval. Superior antenna? three-fourths as long as the 

 inferior. Inferior antenna? about half as long as the animal ; 

 the peduncle twice as long as the flagellum, one-half of which is 

 fused into one articulation, and resembles an extra articulation 

 attached to the peduncle. First pair of gnathopoda having the 

 propodos and carpus equally short and stout, the palm but 

 slightly receding and nearly one-third longer than the dactylos, 

 which is robust and curved ; it impinges at the apex against four 

 short, strong, small, blunt spines, which are situated laterally. 

 Second pair of gnathopoda having the propodos much longer 

 than the first ; it is ovate, long, and tapering towards the 

 extremity, the palm being two-thii'ds the length of the inferior 

 margin. [S. B.~] 



Illawarra (Dana). 



403. Allorchestes humilis. 



Allorchestes humilis, Dana, IT. S. Explor. Exped., Crust., ii., 

 p. 890, pi. lx., fig 6 ; Spence Bate, Cat. Amphip., p. 45, pi. vii., 

 fig. 5. 



Female. ? Superior antennae a little shorter than the inferior, 

 flagellum six to eight- jointed. Inferior pair about one-third as 

 long as body ; flagellum nine to ten-jointed, joints a little oblong, 

 seta? all very short. Propodos of first pair of gnathopoda small, 

 oblong, a little smaller at base, oblique at apex. Propodos of 

 second pair of same form, and not twice as long, inferior margin 

 slightly emarginate ; palm oblique, ti'ansverse, hirsute ; dactylos 

 short. Last four feet nearly equal, fifth pair a little shorter ; 

 seta? few, very short ; first joint nearly orbicular ; posterior 

 margin slightly crenulate. Maxillipedes with the penult joint 

 narrow. [D.] 



Port Jackson (Dana). 



