Contributions to the Crustacean Fauna of South Africa. 209 



tooth, inner margins of all 3 joints with clpse-set sharp teeth and a 

 few scattered setae. 



Epistome not broader than upper lip, which is twice as broad as 

 long and asymmetrically bilobed, with fringe of setae. 



Lower lip, lobes short and stout, apices rounded truncate. 

 Mandibles, cutting-edge quadridentate, secondary cutting-edge 

 tridentate in left, bidentate in right, spine-row with 3 spines in 

 left, 2 in right, molar prominent, bind and strongly denticulate 

 in right, entire in left. 



First maxilla, inner plate with 3 stout plumose setae and a minute 

 spinule, outer plate with 9 spines serrate on their outer edges. 

 Second maxilla, outer plate with 4 serrate spines, narrower than 

 middle plate which has 5 serrate spines, inner plate nearly twice as 

 broad as other two plates together, with numerous plumose setae. 

 Maxillipeds $ , 4th 5th and 6th joints expanded internally, 7th joint 

 short and stout, inner plate truncate, with 1 strong coupling-hook 

 set a little within the inner margin, inner margins when in situ are 

 bent inwards, and fringed with stout plumose setae, epipod ovate, 

 reaching to middle of 4th joint. In the female similar, but 4th 5th 

 and 6th joints are less expanded, the epipod very large, irregular 

 rectangular, reaching to middle of 5th joint, basal joint has a laminar 

 expansion pointing posteriorly and helping perhaps to produce a 

 current of water in the brood chamber. It is present also in the 

 young 5 , but not so strongly developed. 



First peraeopod (gnathopod) similar in both sexes, 2nd joint 

 longest, curved, 3rd and 4th joints short with few setae, 5th joint as 

 long as 3rd and 4th together, 6th joint not so long, 7th joint short, 

 blunt, as long as width of 6th, 5th 6th and 7th joints with thick 

 fringe of long setae, some doubly serrate, others simple. Unguis 

 longer than 7th joint. 



Second, third and fourth peraeopods, 3rd joint shortest, 4th and 

 5th joints subequal, 6th longest, no trace of a 7th joint, all joints, 

 especially 4th 5th and 6th, with long simple setae on inner 

 margin. 



Fifth, sixth and seventh peraeopods, 2nd joint longest, 4th and 5th 

 joints subequal, 6th joint equal to 3rd, 7th joint half as long as 6th 

 with strong apical tooth, unguis as long as width of 7th joint. 



Marsupial plates developed on 1st 2nd 3rd and 4th peraeopods, 

 1st pair distinct in young ? as well as in ovigerous ? , lanceolate, 

 2nd and 3rd pairs shorter and broader, 4th pair large, posterior 

 margin with short inset lobe, 2 or 3 setiferous tubercles below hinge- 

 line. The young ? has shorter marsupial plates, the 4th pair being 



