294 Part III. — Twentieth Annual Report 



the length of the first ; the penultimate joint is furnished with a short 

 stout spine and a few spiniform setai near its distal end ; the last joint is 

 very minute, as shown by the drawing (fig. 21). 



The antennse, which are similar in structure to those of the next 

 species, are provided with one or two stout tooth-like spines on the lower 

 aspect, and armed with an arrangement of strong terminal hook-like 

 claws. 



The mandibles resemble very closely those of Cliaropinus dalmanni 

 (Retz.). The maxillfe are also somewhat similar in structure to those of 

 that species, except that the secondary lobe is more produced. 



The first maxillipeds are small and three-jointed and furnished with a 

 minute terminal claw. 



The second maxillipeds are of moderate size and strongly chelate,, and 

 have a curious resemblance to the chelse of Pseudotanais — a genus 

 belonging to the Isopoda-Chelifera. 



The first four pairs of thoracic feet are all two-branched ; in the first 

 pair and in the third and fourth pairs both branches are distinctly three- 

 jointed ; in the second pair the inner branches, as in the other pairs, 

 are composed of three distinct joints, but in the other branches, which 

 differ considerably from the others^ the second and third joints are nearly 

 obsolete, while the first joint is fully as large as the whole outer branch. 

 The basal portion of each foot consists of two joints, the first being large 

 and considerably dilated, while the second is scarcely half the size of the 

 other. 



in the first pair of feet the outer branches are rather shorter than the 

 inner ones, the first joint is stout and longer than the combined length of 

 the next two, it is furnished with a row of small spines along its outer 

 margin, while a dagger-like spine springs from its outer distal 

 angle ; a similar spine springs from the outer distal angle of 

 the next joint, and two from the end joint, the end joint also carries a 

 moderately long and spiniform terminal seta, together with a small hook- 

 like spine on the inner distal angle ; the three joints of the inner 

 branches are sub-equal in length, but the first joint is more dilated than 

 the others, and is provided with a fringe of minute spines on the outer 

 edge ; the second and third joints carry a few minute spines on the inner 

 margin, while two moderately large spiniform set?e spring from the apex 

 of the last joint (fig. 22), The inner rounded margin of the second basal 

 joint is fringed with several small but stout spines. 



The first basal joint of the second pair is considerably dilated, the 

 second is smaller and fringed on the inner edge with minute spines; the 

 inner branches are small and shorter than the outer, the second and third 

 joints are fringed on both edges with minute spines, while a moderately 

 long and slender seta and a small spine spring from the apex ; the first 

 joint of the outer branches is dilated and exceeds the inner branches 

 in length, but the end joints are so modified as to be almost obsolete 

 (fig. 23). 



In the third and fourth pairs, which are somewhat similar to each other 

 in structure, the inner branches resemble the same branches in the first 

 pair, except that they carry a single moderately stout and elongated 

 terminal spine ; the outer branches are rather longer than the inner ones, 

 and the first joint, which is equal to more than the entire length of the 

 second and third, is fringed on the outer edge with small tooth-like 

 spines, a moderately stout spine springs from its outer distal angle, while 

 a similar spine springs from the outer distal angle of the second joint ; the 

 third joint bears three moderately stout spines of varying lengths at its 

 truncate end as shown by the drawing (fig. 4), which represents one of 

 the fourth pair. 



