436 Annals of the South African Museum. 



Colour : White or pale pinkish, the ova salmon-coloured. 



Locality : Several localities near Cape Town in Table Bay both 

 free-living on the underside of stones and commensal with the 

 following Sphaeromids : Exospliueroma gigas, E. kraussi, E. brcvi- 

 telson, E. varicolor, E. planuiu, Parisocladus stimpsoni, P. pcrforatus, 

 Spliaeramene polytylotos, Dynamenella scabricnla, I), kraussi 

 (K.H.B.); Saldanha Bay on Exosphaeroma kraussi (K.H.B.) ; 

 St. James and Buffels Bay in False Bay on Dynamenella scabricnla, 

 D. kraussi (K.H.B.). 



Tristan d'Acunha oa Isocladns tristensis. (P. C. Keytel. 1909.) 



Geogr. Distribution : Terra del Fuego (Dana), Straits of Magellan 

 (Bovallius), Kerguelen (Smith and Beddard), Falkland Island's 

 (Stebbing), South Georgia (Pfeffer), in each case on Exospliaeroma 

 gigas; Tasmania (G. M. Thomson), on ? Kpluieroma quoyana ; New 

 Zealand (Chilton) free and on ? Spliaeromaobtusa ; Ceylon (Stebbing), 

 in the burrows of Splnteroma tcrcbrans. 



When found on Sphaeromids, they are among the bases of the 

 peraeopods, though on Spliaeramene polytylotos they seem to prefer 

 to live among the pleopods. As a rule there is only one adult $ 

 and one ? , with or without one or two immature ones, on each 

 "host." On Dynamenella scabricula in Table Bay, however, I have 

 found them extremely abundant, as many as 12 or 15 being taken 

 from a single large $ . They are found more frequently on $ 

 Sphaeromids than ? , and it is rare to find any on young specimens. 



GEN. JANIEA, Leach. 

 For references see : Barnard, Ann. S.A.M. x. pt. 7, p. 219, 1914. 



JANIRA EXSTANS, n. sp. 



(Plate XXX VIII. B.) 



Body apparently smooth and glabrous, but much overgrown with 

 foreign substances. Head with antero- lateral angles well marked, 

 anterior margin strongly produced into a broad rounded process, 

 length of head (incl. process) equal to width, eyes on the lateral 

 margins, prominent. 



Peraeon in $ with 1st segment nearly twice as long as any of 

 the succeeding ones, in $ equal to or a little shorter than the 

 others, the last three segments distinctly shorter than the anterior 

 ones, lateral margins rounded, epimera indistinct. 



Pleon broadly oval, longer than broad, margins entire. 



