248 Southern Cross. 



First iintonna consists of four joints, the first three of which 

 ecjunl iht' two proximal joints of the second antenna. The first 

 three joints slightly decrease in length from the first, Ijut the 

 proximal one is very hroad and irregularly rounded. The last is 

 longer than the two preceding, and is setose along the distal two- 

 thirds of one margin. The setae are stout, tapering, and are home 

 on a short, slender peduncle. 



Second antenna not quite as long as the body and comprises a 

 long peduncle of five joints and a short multiarticulate flagellum. 

 Of the five joints of the peduncle, the two basal are small ; the 

 others progressively increase in size, the last one being approximately 

 as long as the two preceding. The second joint has two spines on 

 the outer margin and the third carries two to four ; in either case 

 the distal spine is the largest. The fourth joint also bears a distal 

 spine and, with the preceding, it is setose on the inner margin. 



Mandible short and stout. The cutting edge bears some half- 

 dozen teeth and a tuft of strong setae below them. The molar 

 process is strongly developed, and there is no palp. 



First maxilla. Outer lobe comparatively long and narrow, slightly 

 curved. Armed at the extremity with about nine comparatively 

 long spines. The inner lobe is smaller and more slender, provided 

 with three long plumose setae. The inner margin of both lobes is 

 setose. 



Second maxilla. Base is broad, the inner lobe is somewhat 

 rounded, the outer lobe is digitiform, and the palp is similar but 

 broader. All are setose, more particularly the inner lobe, on which 

 three distinct varieties of setae can be distinguished. A tuft of small, 

 simple setae below the inner and distal curve ; two or three stout 

 plumose setae come next, and following these distally are the com- 

 paratively stout setae, which are more or less plumose. 



Maxillipede. Masticatory lobe quadrangular, with rounded 

 angles ; anterior margin with stout setae. Palp, the five joints, 

 comparatively short but broad anil lamellar, the inner margin 

 richly provided with long setae. The epignath is large, subconical, 

 truncate at extremity. 



Thoracic appendages. The first is short and stout, richly setose 

 on the inner margin and on the outer margin of the propos and 

 dactylus. The setae are spinose in places (carpus). The dactylus 

 bears three claws, the middle one being conspicuously the most 

 slender, and is folded in a sub-chelate manner. The three following 

 ji])i)endages are sub-similar. With the exception of the two terminal 

 joints all bear distally a prominent spine on the outer margin ; the 



