CKUSTACEA — U IIITICLKCfJK. 275 



consisting of tliree subequal joints ; the socond has the distal 

 border armed with strong pectinated setie ; the margin of tlie 

 tliird joint is fringed with simple setse, and two or three long 

 pectinated ones at the summit. First maxillae with the inner 

 lobe long, slender, and aljout two-fifths as broad as the out(!i- ; 

 both are surmounted by curved spines ; the latter has twelve and 

 the former foui", each of which is slightly ciliatedistall}'. Second 

 maxilhe with tiiree lobes of nearly ecjual breadth, and attaining 

 to the same le\el at their summit ; each terminates in a series 

 of more or less pectinated spines, those on the outer lobe being 

 the longest. 



►Superior lobe of the second joint of the maxillipedes equal in 

 breadth and length to the inferior portion ; the broad subtrun- 

 cated apical margin bears about eighteen short spines, each of 

 which bordered laterally by a few small, weak spinules; the inner 

 border carries a stout, curved filament at about its distal third. 

 Palp about equal in length to the preceding joint ; first 

 joint very small ; second, third and fourth with a superior lobe ; 

 fifth cylindrical ; the lobes and the last joint are tipped with long 

 simple setie ; the third and fourth joints are subequal in length, 

 and the second is neai'ly equal in length to the three following 

 joints combined. 



The peduncle of the first pleopods is about twice as wide as 

 long, and bears on its inner distal angle a series of stout spines, 

 which have a slight excavation near the apex and a blunt hook- 

 like process at the tip. Inner ramus broad at the base, tapering 

 to an evenly I'ounded summit. Outer ramus ovate, twice as long- 

 as broad, with an angular lobe at the external base. The inner 

 ramus of the second pleopods is a little broader than that of the 

 first, and carries on its inner base a long subulate stylet ; the 

 latter is about twice as long as the ramus; the basal third is slightly 

 swollen ; the remaining two-thirds is cylindrical and acutely 

 pointed. The rami of the first three pairs of pleopods are 

 clothed at their bases with simple hairs, and their margins with 

 closely placed plumose sette. The outer rami of the third, fourth 

 and fifth pairs have a sutural line below the apex ; the fifth is 

 broad and thickened at the summit ; there is a rounded tubercle 

 at the inner distal extremity of the suture, a second one almost 

 in contact, and a third one seated on a short peduncle at some 

 distance below. The swollen distal margin and the tubercles are 

 covered with closely placed rasp-like teeth. 



Length of larger specimen (rostrum excluded)... 20 mm. 

 ,, ,, rostral spine ... ... ... ,. 10 ,, 



,, ,, lateral spine ... ... ... ... 6 ,, 



Two male examples are in the collection, one obtained at New- 

 castle Bight and the other off Port Hacking, in 10 to 38 fathoms. 



