388 Annals of the South- African Museum. 



CYMODOCE VALIDA (Stebbing). 

 (Plate XXXIII. C.) 



1902. Exosphaeroma validum, Stebbing, S.A. Crust, pt. 2, p. 66, 



pi. 12 A. (<?.) 

 1905. Cymodoce valida, Hansen, Q. J. Microsc., Sci. vol. 49, pt. 1, 



pp. 118-122. (Young $ .) 

 1910. ,, Stebbing, Gen. Cat. S.A. Crust, p. 430. 



Stebbing in 1910 included G. setulosum (Stebbing) in tbe above 

 synonymy as the female on the strength of Hansen's remarks, (I.e. 

 pp. 118-122). However, among the numerous specimens of 

 Cymodoce collected by the s.s. " Pieter Faure," there are 3 adult 

 females which I think should be referred to this species as the true 

 female. Consequently G. setulositm should be reinstated as a 

 distinct species. There is also a large male agreeing essentially 

 with Stebbing' s description, but nearly a third as long again as his 

 specimens. 



Adult male. Peraeon smooth, without tubercles. The 4th 

 segment of pleon with 2 inconspicuous subrnedian tubercles and 

 another on the lateral portion ; telson with 2 large submedian bosses 

 with minute subsidiary tubercles, apex truncate and shallowly 

 trifid. 



Flagella of first and second antennae respectively 19 and 18- 

 jointed. 



Outer plate of first maxilla with 10 spines. 



First peraeopod, 3rd joint with 5-6 spine-setae on outer apex, 

 spines on inner margins of 4th, 5th and 6th joints respectively 

 8, 5 and 6. 



Male stylet on second pleopod extends beyond apex of ramus, 

 curving slightly outwards towards the end and minutely spinulose, 

 apex blunt. 



Ovigerous female. Peraeon smooth, without tubercles ; pleon 

 with 2 inconspicuous submedian tubercles on 4th segment and 2 

 bosses on telson, telsonic apex truncate, with a shallow notch but 

 without median lobes. Epimera, pleura, telson and uropods with a 

 pellucid border and fine scattered setae. 



Flagella of first and second antennae respectively 22 and 16- 

 jointed. 



The mouth parts metamorphosed. Lower lip small, consisting of 

 2 blunt lobes. Incisive process of mandibles blunt, colourless, with 

 a few minute setules, secondary cutting-edge, spine-row and molar 

 absent. Outer lobe of first maxilla with blunt apex, marginal setules 



