102 NOTES ON THE AUSTRALIAN AMPHIPODA, 



ones the carina become divided into teeth except on the fourth and 

 fifth segments of the pleon ; the fourth segment of the pleon 

 presents two teeth — one anterior small, and a posterior very large ; 

 the tooth on the fifth segment is also large, but a little smaller than 

 tlie larger of the two on the fourth segment. The telson is deeply 

 cleft, each half armed with a short spine. The superior antennae 

 are as long as the head and first five segments of the pereion, 

 very little longer than the peduncle of the inferior pair ; the first 

 two segments of the peduacle are nearly equal in length, but the 

 first is stouter than the second ; the third is small, scarcely distinct 

 from the articuli of the flagellum ; the flagellum is a little longer 

 than the peduncle, of thirteen long narrow uniform articuli. 

 The inferior antennse have the flagellum composed of eleven 

 long narrow articuli. The terminal joint of the mandibular palp 

 is not curved ; the toothed edge and accessory plate have each five 

 or six teeth. The gnathopods are sub-equal, similar, the posterior 

 pair with the propus a little longer ; neither merus nor carpus 

 develope processes ; the propus is ovate, ornamented along the 

 lower border with stout simple setae ; the palm is oblique. The 

 dactyli of the pereiopods are stout, with a slender spine on the 

 ventral aspect near the apex. The last pair of pleopods are large, 

 the rami rather more than twice the length of the protopodite, 

 serrated and armed with short stout setse. 



Length, inclusive of antennte, f^ths of an inch. 



Port Stephens. 



The nearest relative of this species seems to be A. Swammerdamii 

 of Milne-Edwards (Bate and Westwood, Vol. 1., p. 246.) 



XI. Dexamine Miersii. N. sp. 



(Plate XIIL, figs. 8-12.) 

 The head has a short, blunt rostrum. The eyes are large, reniform. 

 Tlie antennte are very long and slender ; the upper pair are a little 

 shorter than the lower, the basal joint of the peduncle shorter than 

 the head, stout, the second joint nearly twice as long as the first, 

 narrowing towards its extremity, the third not distinguishable from 



