268 DR. W. A, CUNNINGTON ON 



c'. Second segment of antennule with anterior spine. 

 d. Abdomen slightly longer than broad, sinus less 



than one-quarter of its length ; eyes very large ... exiguus S • 

 cV. Abdomen distinctly longer than broad, sinus one- 

 half of its length ; eyes and suckers situated close 



together and far forward angusticejjs $ . 



h'. Basal segment of maxilliped bearing broad processes. 

 c. Abdomen long elli])tical, at least one and a quarter 

 times as long as broad. 

 d. Abdominal lobes pointed, sinus one-third or more 

 of length of abdomen ; carapace lobes character- 

 istically striated striatus. 



d'. Abdominal lobes rounded, sinus one-sixteenth of 



length of abdomen ruhescens $ . 



c'. Abdomen broadly elliptical, less than one and a 

 quarter times as long as broad. 

 d. Basal segment of antennule bearing broadly rounded 

 process, second segment with small posterior spini- 



form process ruhescens 9 • 



d'. Basal segment of antenniale bearing somewhat 

 rounded spine, second segment with stout pos- 

 terior spine ; carapace with characteristic blsck 

 pigment-spots , africanus. 



AnavLUS iNCisus, sp. n. (PL XLI. figs. 1, 2; PI. XLIII. 

 figs. 17, 18.) 



Description. — Carapace orbicular, about as long as broad, with 

 antero-lateral depressions very pronounced, so that portions of 

 the antennae may be visible from above. Posterior lobes broad 

 and rounded, only covering bases of first and second swimming- 

 legs, and separated by a broad sinus about one-fifth the length of 

 the carapace. The edge of the carapace below is only moderately 

 armed with small spines, which extend to the region of the 

 swimming-legs. There are no such spines in the anterior region 

 in front of the eyes. Abdomen in the male twice as long as 

 broad, about two -fifths * entire length of body ; posterior lobes 

 pointed, and separated by broad sinus two-fifths length of 

 abdomen. Abdomen in the female more than one and a half 

 times as long as broad, about one-third entire length of body ; 

 posterior lobes bluntly pointed and separated by broad sinus 

 one-half length of alDdomen. The furcal appendages in both 

 sexes lie at the bottom of the anal sinus. Antennules and 

 antennas small and ill-armed, approaching closely to one another 

 in the mid line. The second segment of the antennule only 

 is armed with an inconspicuous anterior spine and slender lateral 

 hook. No accessory spines or processes close behind these appen- 

 dages. Eyes rather large, in the males less than one-quarter, in 

 the females less than one-fifth breadth of carapace apart, and 

 situated somewhat far forward. Suckers rather large, in the 

 males •14-" 15, in the females '15 1 of breadth of carapace. 

 Maxillipeds of moderate size, rather poorly armed ; basal 

 segment produced into three flattened processes ; " area " 



* Proportions not to be confused with those given by Wilson and differently 

 expressed, vide supra. 



t Diameter of sucker measured at chitinous supporting ring and not at extreme 

 edge. 



