Contributions to the Crustacean Fauna of South Africa. 213 



First peraeopod (gnathopod), 5th 6th 7th joints with long doubly 

 serrate setae, distal third of 7th joint suddenly narrowed, unguis 

 one-third length of 7th joint, otherwise as in 5 



Peraeopods 2, 3, 4 becoming successively longer. In second 

 peraeopod 2nd joint equals 4th, 3rd joint twice length of 5th, all 

 with blunt spines, 6th joint not quite as long as 5th, 7th joint 

 one-quarter length of 6th, tipped with exceedingly long unguis 

 and a much shorter spine, finger and unguis together equal to 

 6th joint. 



Third peraeopod, 2nd joint longer than 2nd joint of peraeopod 2, 

 3rd and 4th joints subequal, both shorter than 2nd, 5th joint equals 

 2nd and 3rd together, 6th joint a little shorter, 7th joint and unguis 

 as in peraeopod 2. 



Fourth peraeopod, 2nd joint longer than 3rd and 4th together 

 and equal to 5th, 6th joint shorter than 6th in 2nd and 3rd 

 peraeopods, unguis also shorter. 



Peraeopods 5, 6, 7 decreasing in length and stoutness, as in $ , 

 but armature is not so strong, especially on 3rd joint, on which joint 

 in peraeopods 6 and 7 it is obsolete. 



Male stylet on 7th peraeon segment lanceolate, sides straight, 

 apex blunt, slightly incurved. There is no appendage on the third 

 or fifth segments. 



First pleopod, inner margin peduncle has ca. 12 hooked spines, 

 otherwise as in 2 , except that distal end of exopod is produced 

 outwards, and apex is shallowly trifid. 



Second pleopod, peduncle short, rami long obovate, penial filament 

 narrow, strongly curved at base, distally tapering to a single long 

 point reaching to end of the plumose setae on apices of the rami. 



Third-fifth pleopods, rami elongate lanceolate. 



Uropods as in $ , but the denticles on the surface are blunter and 

 more granular. 



Length: 18mm.; breadth: 1'75 mm. ; depth: 1-5 mm. Second 

 antenna: 20 mm. 



Colour : In spirit, pinkish. 



Locality : Cape St. Francis NE. distant 29 miles. 75 fathoms. 

 2<?<?. s.s. " Pieter Faure." 19/2/02. (S.A.M. No. A51.) 



NEOAECTUEUS, n. g. 



Body cylindrical, without bend between 4th and 5th peraeon 

 segments. 



Fourth peraeon segment not longer than the third. 



17 



