Contributions to the Crustacean Fauna of South Africa. 339* 



Length: 1O5 mm.; breadth, 1 mm. 



Colour .- In spirit pinkish, eyes red. 



Locality : Umhlangakulu River NW. by N., distant 7 miles (Natal). 

 50 fathoms. 1 $, amongst sponges, s.s. " Pieter Faure." 14/3/01. 

 (S.A.M. No. A4172.) 



GEN. APANTHURA Stebb. 



1900. Apanthura Stebbing, in Willey's Zool. Res. pt. 5, p. 621. 



1910. id. I.e. p. 93. 



1914. Barnard, I.e. p. 340a. 



This genus possesses normally a 5- jointed maxilliped. The follow- 

 ing species, however, while agreeing in all other respects with the 

 diagnosis, possesses a 6-jointed maxilliped. Moreover there are indica- 

 tions that the 4th joint is really composed of 2 joints, this being the 

 only case known of an Authurid exhibiting the full number of joints 

 normal in the Isopoda. 



APANTHURA SEEEICAUDA u. sp. 

 (Plate XV. Figs. 11, 12.) 



Body moderately elongate. Head f length of 1st peraeon segment, 

 about as broad as long. Eyes small, oval. 



Peraeon segment 1 shorter than the following segments, 7 shorter 

 than 1. Pleon segments distinct in both sexes, short, all 5 together 

 equal to 6th peraeon segment. Telson increasing in width distally, 

 apex semicircularly rounded, serrate and setose. 



Antenna 1 short and stout, 1st joint a little larger than 2nd, 2nd 

 and 3rd about equal in length, fiagellum equal to 3rd joint, obscurely 

 2 -jointed. 



Antenna 2. 3rd and 5th joints subequal, 4th shorter, flagellum equal 

 to 5th joint, very obscurely 3-jointed. 



Maxilliped narrow, 1st join't obscure, 3rd short, 4th nearly as long 

 as 2nd with obscure indications of a suture across the middle, 5th half 

 as long as 4th, 6th minute, tipped with setae, inner plate as long as 

 2nd joint, epipod length of 2nd joint, narrow, oval. 



Remaining mouth-parts as described for A. africana Brnrd. 



Peraeopod 1, 5th joint with a very small produced point on inner 

 apex, 6th ovate, palm perfectly straight and entire, 7th plus unguis 

 nearly as long as palm. 



Peraeopods 2 and 3 similar to 1st but weaker, palm with a spine 

 near the apex. 



