378 Annals of the South African Museum. 



2nd as long as 1st on its anterior margin, the anterior (outer) margin 

 longer than the inner, 3rd joint slender, extending as far as outer 

 apex of 2nd, flagellum a trifle longer than 3rd peduncular joint, 

 5-jointed, with sensory setae. 



Antenna 2 extending to end of 1st peraeon segment, lst-3rd joints 

 subequal, 4th and 5th slightly longer, subequal, flagellum subequal 

 to peduncle, 7-8-joiuted. 



Mouth-parts normal. Maxilliped with 4-6 joints equally produced 

 internally, 7th joint rather short and stout, almost obovate, apex 

 rounded. 



Peraeopods rather stout, subequal ; peraeopods 1 and 2 similar, 



1 a little stouter, with the 4th joint broader, outer apex of 4th with 

 a very strong apically pectinate spine, inner apex of 4th and 5th in 

 peraeopod 1 with a smaller pectinate spine, in peraeopod 2 with a 

 seta, uuguis strong, secondary unguis at apex of 7th joint tubercular ; 

 peraeopods 3 and 5, outer apex of 4th joint with a strong pectinate 

 spine ; peraeopod 4, apices of 4th and 5th joints with a strong 

 pectinate spine ; peraeopod 6 similarly armed, with 2 similar spines 

 on each side of the median one on 5th joint ; peraeopod similarly 

 armed, but the median spine on 5th joint long, extending to apex 

 of unguis and flanked with 4 spines, 5th joint relatively longer than 

 in the preceding peraeopods ; inner margins of 4th-6th joints in all 

 the peraeopods smooth. 



Pleopod 1, inner ramus twice as broad as long, outer margin 

 concave, setae on both raini long. 



Pleopods 2 and 3, outer ramus narrower than inner. Inner apex 

 of peduncle in pleopods 1-3 with 3 hooked setae. Outer ramus of 

 pleopod 3 undivided. 



Pleopod 4, both rami thin, nonsetose, undivided. 



Pleopod 5, rami thin, nousetose, outer ramus divided, squamiferous 

 processes not prominent. 



TJropod, peduncle and inner ramus completely fused, lamellate, as 

 long as telsou, outer ramus a minute but distinct tubercle inserted in 

 a notch quite near the base of the outer margin. 



Length: 4mm.; breadth: 3'25 mm. 



Colour: Pale straw, with scattered irregular pigment-specks, eyes 

 black. 



Locality : Natal coast, 6 fathoms, off coral. 1 uon-ovigerous $ , 



2 juv. (H. W. Bell-Marley), May, 1917. (S.A.M. No. A4566.) 



This interesting form was received too late for figuring in the 

 present paper. 



