On some South-African Phyllopoda. 



1. Apus numidiciis, Grube. 



(PL I.) 



Apus numidicus, Grube, Ueber die Gattungen Estheria 

 und Limnadia und einen neuen Apus (Archiv f. Natur- 

 geschichte, Jahrg. XXXI), p. 75, pl. XI, fig. 14. 



Syn.: Apus dispar, Brauer. 



Specific Characters. — Carapace comparatively small 

 and flattened, especially in the male, where it is almost 

 circular in form, being more oval in the female, posterior 

 sinus not very deep, and scarcely angular at the bottom, 

 lateral lobes acute, dorsal keel distinct as far as the cervical 

 sulcus. Exposed part of body very slender, cylindric, 

 comprising in female about 25, in male 30 segments, and 

 exceeding the median length of the carapace in male by 

 nearly 1 I% of its length. Caudal (non-pedigerous) segments 

 in female 11, in male 14. Eyes large reniform, slightly 

 diverging behind; postocular tubercle of considerable size, 

 semi-oval abruptly cut off behind, and carrying on the tip a 

 small circular knob. First pair of legs with the endites 

 very slender, filiform, the 4th one about equalling in length 

 the carapace. The 2 succeeding pairs of legs differing some- 

 what in the two sexes, being much stronger in male than 

 in female, with the endites more robust, terminal joint in 

 both sexes well developed, though shorter than the 4th 

 endite, and minutely denticulate inside. Caudal filaments 

 not particularly long, scarcely exceeding half the length of 

 the body, and very distinctly and regularly articulated 



