26 T. V. HODliSON. 



contains more joints than quoted by either of these observers. The peduncle and 

 most of the joints of the flagellum show markings as of imbricated scales, and having 

 at short intervals very delicate aborescent chromatophores. The joints of the flagellum 

 each bear a tuft of a few setse and a sensory seta. This is a rather long thin structure 

 containing granular matter and mounted on a short but stout peduncle. Owing to 

 injury it is difficult to make out the details of its structure, but in a few cases they 

 appear to be identical with Mr. Beddard's figures. 



The second antennae have five-jointed peduncles, in each case the first joint is not 

 visible from the dorsum and is small ; this and the second are directed forward, the 

 third being articulated at a right angle ; this and the two following are grooved 

 longitudinally, the proportions of the various joints being 1'5. 3 '5. 5. 8. 11. The 

 multi-articulate flagellum is not as long as the terminal joint of the peduncle. The 

 margin of the peduncle is fringed with setae, small and fine ones singly, longer ones 

 in small tufts at intervals. The joints of the flagellum number sixteen, in agreement 

 with Mr. Beddard, and have the appearance of being covered with imbricate scales, 

 irregularly hexagonal in shape ; along the centre joints there is a row of teeth, those 

 figured by Mr. Beddard do not give an adequate idea of their structure. They occur 

 on the fourth to the tenth joints inclusive, and consist of a strong tooth directed 

 forwards, its posterior margin being produced into a thin blade like a knife edge. 



The flagella of both antennae are fringed with extremely minute spines. 



The upper lip or epistome is triangular with its angles rounded, the broad base being 

 posterior and straight, with the exception of a slight indentation in the middle line. 



The anterior borders are enclosed by an independent but narrow ridge. The 

 epistome itself bears two circular depressions, a fact noticed by Eights, but his figure 

 as regards this structure is not good. 



The mandible is very strong, and has a stout base directed obliquely inwards ; 

 a liluut process on its anterior margin marks the point where it turns to the middle 

 line, tapering to end in a stout cutting edge. This edge is strongly coloured, and 

 the left mandible, viewed externally, exhibits two small tubercular teeth with traces 

 of a third ; some little distance from the cutting edge there projects from under the 

 posterior margin a tubercle belonging to the inner series, and behind this a rather 

 long bifurcated spine. Internally there is a second cutting edge which comprises 

 three stout tubercles and two small ones between and a little behind the first and 

 second. Another weaker ridge lies behind this, and from the posterior end of it the 

 bifurcated spine arises. 



The palp is long and three-jointed ; rising from the outer angle at the base of 

 the mandible two joints lie in front of the epistome, the third being directed straight 

 forwards between the antennae. The proportions of the joints are as 5. 8. 3\ r >. The 

 first joint bears a single long seta of simple structure, the second bears several, but 

 at its distal and ventral extremity they become highly specialised. The last joint 

 is a Hiit blade with a rounded dorsal margin and nearly straight veutrally. The 



