TERliESTK'IAl, ISOPODA OF NATAL. 483 



Length 20"5 mui. 



Colour (in alcohol) dark grey with lighter grey mottling in 

 the median and lateral areas. 



Habitat. — Sarnia nr. Durban, Oct. 1916 (E. Warren). 

 Winkle Spruit Beach, S. Coast, Dec. 1916 (C. Akerinan). 

 Mt. Fongosi, Zululand, Jan. 1917 (W. E. Jones). 



Type. — In the Natal ]Museuni. 



11. Cubaris griseus n. sp. PI. XXXI, figs. 77-85. 



Body (fig. 77) oblong-oval, strongly convex and finely 

 rugose. Cephalon (figs. 78, 79) small and flanked by the 

 pleural plates of the 1st mesosomatic segment, slightly 

 raised in the mid-dorsal line and faintly marked with lio-ht- 

 coloured, irregularly shaped rugosities ; anterior margin 

 raised and turned slightly backward ; epistome smooth and 

 convex. Eyes prominent, situated dorso-laterally. Anten- 

 nulge small S-jointed. Antennaj (fig. 80) with the 5th joint 

 elongated ; flagellum 2-jointed, the proximal joint less than 

 one-third the length of the distal joint, terminal style short 

 (fig. 81). First maxillee (fig. 82) small, outer lobe with four 

 short curved spines and six smaller and more slender ones, 

 setose on the outer margin ; inner lobe fairly wide with two 

 small setose spines arising from the inner distal marp-in. 

 Segments of the mesosome strongly convex, the 1st with 

 expanded pleural plates, with margins slightly reflected 

 upwards and outwards, anterior angle acutely pointed, 

 posterior angle less so, pleural plates of 2nd to 4th segments 

 slightly excavate, remainder truncate, posterior angles only 

 very slightly produced. Notch and groove on the under side 

 of the inner margin of segments 1 and 2 well-developed 

 (fig. 83). Uropoda (fig. 84) robust, not extending beyond 

 the telson, basal plate thick, strongly raised and convex 

 dorso-laterally, posterior margin truncate, antero-dorsal 

 surface folded, expanded slightly below the point of articu- 

 lation of the endopodite, setaceous ; exopodite short and 

 stout, not extending to the posterior margin of the basal 



