26 T. V. HODGSON. 
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 setae 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 antenne 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%, 3°5. 6. 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 sete, 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 antenne 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 blunt 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 hetween the antennee. The proportions of the joints are as 5. 8. 3°5. The 
first jot 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 flat blade with a rounded dorsal margin and nearly straight ventrally. The 
