Two additional South-African Phyllopoda. 



Elizabeth, the body being far less slender, and the male 

 antennæ much shorter and also of somewhat different 

 structure. Nor can it be the S. Gaffer of Loven, the male 

 of which, according to the notes given by Mr. Brauer, has 

 a distinctly denned trilobate frontal lobe, and the antennæ 

 of a rather more complicated structure. It is also easily 

 distinguishable from the 3 species described by Mr. Brauer 

 from North Africa, and likewise from S. rubricaudatus of 

 Klunziger. I have much pleasure in dedicating this distinct 

 species to the distinguished zoologist, Dr. Fred. Purcell, who 

 undertook the charge of forwarding me the specimens. 



Description. — The length of the largest female speci- 

 men, measured from the front to the tip of the caudal rami, 

 does not exceed 14 mm.; that of the male amounts to 15 mm. 

 This form, accordingly, is of rather smaller size than S. gra- 

 cilis, which reaches a length of from 20 to 21 mm. 



The form of the body (see figs. 1, 2), as compared with 

 that in S. gracilis, is rather short and clumsy, though, as 

 usual, a little more slender in the male than in the female. 

 In both sexes the anterior division of the body, comprising 

 the head and trunk, is fully as long as the posterior, whereas 

 in S. gracilis the latter division is much the longer. 



The head exhibits, at about the middle of the dorsal 

 face, the usual cervical groove joining the upper ends of the 

 mandibles, and is somewhat larger in the male than in the 

 female. In the latter the frontal edge is quite evenly 

 rounded (see fig. 3), whereas in the male (see fig. 5) it is 

 somewhat more prominent, forming above the bases of the 

 antennæ a broad, shelf -like expansion, minutely bidentate at 

 the tip. The lateral lobes of the cervical segment, contain- 

 ing the shell-gland, are very distinct. 



