Crustacean Fauna of South Africa. 233 



HYALE INYACKA n. sp. 

 (Plate XXVIII. Fig. 4.) 



Body not very shiny, dorsally rounded. Eyes elongate-oblong. 

 Side-plates not deep, 1 widened below. Postero-inferior angle of 

 3rd pleon segment quadrate, not produced, posterior margin with 

 4-5 widely spaced and very slight serrations. Telson, lobes oblong, 

 apically truncate. 



First antenna reaching well beyond peduncle of 2nd antenna, 

 1st joint equal to 2nd and 3rd together, flagellum longer than 

 peduncle, 13-jointed. 



Second antenna equal to half length of body, ultimate and penul- 

 timate joints subequal, flagellum longer than peduncle, 24-joiuted. 



First gnathopod J, 2nd joint scarcely expanded on front apex, 

 .3rd not expanded, lobe of 5th broad and apical, setose along whole 

 margin, 6th wider distally than proximally, palm a little oblique, 

 setose, 2 defining spines, hind margin with a group of setae shortly 

 before apex. 



Second gnathopod <$ , 2nd joint with a narrow apical expansion, 

 3rd not lobed, 6th oval, palm oblique, convex, spiuose, equal to hind 

 margin and denned by a small blunt projection bearing 1 spine, finger 

 matching palm. 



In $ gnathopods similar to one another and to 1st gnathopod of 

 <$ , but 2nd joint in both gnathopods with a narrow apical lobe. 



First and second peraeopods, hind margin of 6th joint with 



3 groups of 1 spine and 2 setae each, apex with 1 short spine and 

 2-3 setae, finger with short stout spine (not seta) on inner apex 

 (if finger and uuguis be counted together the spine is in middle of 

 inner margin). 



Third to fifth peraeopods, hind margin of 2nd joint setulose and 

 serrate, faintly on 3rd and 4th peraeopods, more strongly on 5th, hind 

 margin of 4th with 3 solitary small spines, anterior margin of 6th with 



4 pairs of spinules and a fairly stout but not very prominent apical 

 spine, hind margin of 6th smooth in 3rd peraeopod, with 4 (4th 

 peraeopod) or 3 (5th peraeopod) groups of 3 unequal spines and an 

 apical tuft of setae, finger with fairly stout seta, inner margin quite 

 smooth. 



First uropod with marginal spines on both rami. 

 Third uropod, ramus shorter than peduncle. 

 Length : 9 mm. 



Colour : Pale pinkish, eyes black. 



Locality : Inyack Island, Delagoa Bay. October, 1912. (K.H.B.) 



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