274 DR. W. A. CUXNINGTON ON 



second pair a short distance behind them. Flagella present on 

 the first two pairs of swimming-legs. In the female, basal 

 segment of fourth leg produced posteriorly into pointed lobe. 

 Colour (in spirit) a uniform brown, but somewhat darker in the 

 region of the egg-masses. 

 Dimensions as follows : — 



Adult female (only specimen) 



mm . 



Totallength 10-7 



Length of carapace 7'8 



Breadth of carapace 5 "6 



Remarks. — It is unfortunate that this species has to be 

 described from a single specimen. The latter is, however, an 

 ovigerous female which exhibits a number of distinctive features 

 and cannot be classed with any of the known forms. Prominent 

 characteristics are the narrow head region, rather well marked 

 off, and the large eyes placed close together. The eyes, suckers, 

 and maxillipeds are also situated remarkably far forward. The 

 carapace lobes a,ppear curiously thick and fleshy — an appearance 

 which might possibly be due to shrinkage. The specimen was 

 obtained from an uncommon source, namely, from a basket of 

 small fish, but was attached to none of the latter. Thus, although 

 the specimen may well have been dead, there is no reason for 

 supposing that it was dried up to any extent, and indeed, its 

 general condition seems to preclude such a suggestion. 



Occurrence. — Uvira, 5/3/05. Found among a number of small 

 fish of different kinds — at the moment adhering to none. A 

 single female, distended with eggs. 



Argulus striatus, sp. n. (PL XLII. figs. 12-14; Pi. XLY. 

 figs. 28-30.) 



Description. — Carapace elliptical, longer than broad, with 

 slight antero-lateral depressions. Posterior lobes fairly broad 

 and rounded, covering bases of all but fourth swimming-legs ; 

 in a female distended with eggs, the third swimming-legs are 

 only partially covered. The lobes are separated by a broad sinus 

 one-fifth the length of the carapace. The edge of the carapace 

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

 the swimming-legs. Abdomen in the male nearly twice as long 

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

 pointed, and separated by broad sinus one-third length of abdomen. 

 Abdomen in the female about one and a quarter times as long as 

 broad, about one-quarter entire length of body ; posterior lobes 

 pointed and separated by broad sinus one-half length of abdomen. 

 The furcal appendages in both sexes lie at the bottom of the anal 

 sinus. Antennules of moderate size, basal segment with blunt 

 posterior process ; second segment with stout anterior spine, 

 posterior small spiniform process, and lateral hook of medium 

 size. Antennae with short .blunt process on basitl segment. 



