Crustacea.] 



SUBANTARCTIC ISLANDS OF NEW ZEALAND. 



663 



I append a more detailed description of the appendages. 



The antennules (fig. 17a) have the first joint large, slightly curved; the second 

 joint not quite half the length of the first ; third joint nearly twice as long as second, 

 but very slender, tipped with about five or six sensory setae, but otherwise without 

 setae ; the first and second joints bear a few fine setae. 



Fig. 17. — Haplophihalmiis auslralis, sp. nov. 



Ma. Antennule. 



176. Antenna. 



17c. Seventh leg of male. 



lid. Extremity of same (more highly magnified). 



17e. Second pleopod of male. 



17/. Third pleopod of male. 



\lg. Pleon and nropoda (from above). 



The antennae (fig. 176) have the first three joints increasing in length, the fourth 

 as long as the two preceding and rather shorter than the fifth, which is slightly 

 narrowed and a little curved at its proximal end ; the flagellum is almost as long as 

 the fifth joint, and consists of four or five joints, the last one being tipped with a 

 pencil of long setae ; all the joints of the antennae are thickly covered with fine 

 short setae, and one or two stouter setae are found at the end of the third and 

 fourth joints of the peduncle. 



The wpper lip has the anterior border regularly rounded and fringed with short 

 setae. 



The mandibles have the incisor process composed of three or four stout teeth, 

 and the molar process prominent, covered with short stout setae, with a long plumose 

 setae lying alongside it ; in the left mandible the lacinia mobilis is circular at its 

 extremity and bears a ring of short teeth or setae, at its base arises a single stout 

 plumose hair ; the right mandible has the lacinia mobilis ending in three stout teeth 

 like those of the incisor process, and two stout plumose hairs arise at its base. 



The lower lip is deeply cleft into two lobes, each fringed with setae along their 

 outer border, and also round the margins of the cleft. 



The first maxilla has the outer lobe narrow, ending in about a dozen stout curved 

 setae, the outer ones being the stronger, and brownish in colour ; the outer margin 

 of the lobe bears numerous setae arranged in small tufts, and a few rather longer 

 setae are found on the inner margin. The inner lobe bears the usual three setae at 



