26 T. V. IIODdSON. 



contains more joints than ([iioted hv cithor of these ol)servers. The pedumle and 

 most of the joints of the HagoUnm show markings as of imhricatcd srales, and having 

 at short intervals very delicate altoresoent chroniat«phores. The joints of the flagellum 

 each hear 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 st<iut peduncle. (Iwing to 

 injury it is difficult to make out the details of its .structure, hut in a few ca.ses they 

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



The second antenna; 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 

 tiiird being articulated at a right angle ; tiiis and the two following are grooved 

 longitudinally, the proportions of the various joints being \o. 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 fiagellum number .sixteen, in agreement 

 with ^Ir. 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 ^Ir. Beddard do not give an adequate idea of their structure. They occur 

 on the fourth to the tenth joints inclu.sive, and cou.sist of a strong tooth directed 

 forwards, its posterior margin being produced into a tliin liladc like a knife edge. 



The flagella of both antennje are fringed with' extremely minute .spines. 



The upper lip (U- epistome is triangular with its angles rounded, tlie 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 uarrow I'idge. The 

 epistome it.self 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 l>ase directed oldiijuel}- inwards ; 

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

 line, tivpering 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 l)elonging to the inuer .series, and behind this a rather 

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

 three stout tuliercles 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; ri.sing from the outer angle at the base of 

 tlie mandible two joints lie in front of the epistome, the third being dire<'tcd straight 

 forwards between the antenna?. The proportions of the joints are as 5. 8. 3;'). The 

 first joint bears a .single long .seta of simjile structure, the sccontl l)cars several, but 

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

 is a H.it bhuh- witii a rounded ilorsal margin and nearly straight ventrallv. The 



