234 Annals of the South African Museum. 



and anterior peraeon segments with irregular shallow depressions, 

 which become obsolete on the posterior peraeon segments and pleon. 

 Hairs on the peraeon and pleon short and scattered, most abundant 

 on the 6th pleon segment. 



The Head in profile is subtriangular, convex in front. Longer 

 than the 1st peraeon segment but shorter than the 1st and 2nd 

 segments together. Eyes well developed. Below the eyes is a 

 small notch from which a groove runs backwards parallel with 

 the inferior margin and defining the cheek. Frontal and inferior 

 margins emarginate. Near the posterior margin is a groove running 

 out to the rounded intero-posterior angle of the head. 



The Peraeon. First segment rather closely attached to the head, 

 a little longer in the centre than at the sides. Inferior angles 

 rounded, not produced, inferior margin convex. Segments 2, 3, 4 

 nearly as long as and a little deeper than the first ; inferior margins 

 emarginate, infero-anterior angles rather pointed. Segments 5, 6, 7 

 a little deeper than the preceding ones ; 5 and 6 a little shorter 

 than 4, 7 half the length of 1. Inferior margins, especially of 

 5 and 6, excavate. 



Epimera of segments 1-4 bilobed, the lobes rounded with a 

 few hairs on each. Epimeron 1 nearly as long as its segment, 

 epimera 2, 3, 4 distinctly shorter than their respective segments. 

 Epimera 5, 6, 7 subtriangular, anterior angles rounded, posterior 

 angles pointed, with a few hairs. 



The Pleon. Its length (with telson) is twice its depth. Pleura 

 well developed, concealing the pleopods in their natural position. 

 Pleuron 1 nearly as deep as its segment, pleura 2, 3, 4 equal to 

 or slightly longer than their respective segments, pleuron 5 nearly 

 twice as long as its segment. Inferior margins rounded, beset 

 with numerous hairs. Segment 1 not quite as long as peraeon 

 segment 7, segments 2, 3, 4 gradually increasing in length ; the 

 fifth as long as the third and fourth together, posterior margin 

 deeply notched where pleuron joins the segment ; the sixth segment 

 and telson together as long as the fourth and fifth together, infero- 

 anterior angle rounded with 3 strong setae and a few hairs. No 

 groove or ridge defining the junction of telson with the 6th pleon 

 segment. 



The Telson in profile is strongly convex above with a deep 

 concavity above the terminal projection. This is bluntly tridentate 

 with two strong spines and a few hairs ; one strong spine in a 

 slight notch on either side of the terminal projection and another 

 strong spine further back and some little way within the inferior 



