450 Lt.-Col. Winn Simpson on 



Head black, prothorax brown, elytra yellow-brown, antennae 

 and legs yellow ; head concave in front with coarse punc- 

 tuation and two deep impressions on each side of a median 

 line extending longitudinally about halfway to the vertex, 

 which is coarsely punctured ; two tufts of yellow hair just 

 above the epistoma turn slightly upwards, four other tufts 

 arising close behind ; the front is slightly elongate ; the 

 appendages to the mandibles are flat and expanded towards 

 the apex, the inner edges being serrated, there is a large tuft* 

 of yellow hair at the apex of the scape, pointing forwards and 

 downwards ; the first joint of the funiculus is inserted into 

 the outer side of the scape close to the apex (which is 

 much dilated) and is large and globular, the second joint 

 elongate, and the rest transverse ; the club is solid without 

 an} r sutures, of a pale colour, uniformly covered with short 

 hairs and large pores on the outer surface, which also has a 

 narrow chitinous ridge from the base to about the centre ; 

 the prothorax is oblong and deeply indented at the sides, 

 with a slight median line extending from the base to the 

 centre; just above the deeply bisinuous base a narrow row 

 of pale hairs extends from the median line almost to the 

 sides and above this there is a row of large punctures inter- 

 mixed with pale scales, above which again are scattered a 

 number of large punctures as far as the anterior limit of the 

 median line, the rest of the surface being plain; the elytra 

 are translucid, becoming darker towards the apex, and very 

 faintly punctate-striate — they have a thick transverse basal 

 ridge and are bluntly rounded at the apex ; the fifth abdo- 

 minal segment is concave and edged with a few hairs. 



Diapus furtivus } sp. n. 



J . Piceo-brunneus, elytris semipellucidis, antennis pedibusque 

 ferrugineis ; fronte inaequali ; antennae juxta verfcicem capitis 

 insertse ; palpi labiales triarticulati ; prothorace oblongo, in 

 utroque carina latere congerie foraminorum transversa ornata ; 

 elytris subtilissinie lineato-punctatis, interstitiis planis, uniseria- 

 tim punctatis, margin e apicale rotundato. 



Long. 3*5-4 mm. 



5. Fuscus; elytris semipellucidis; fronte piano, antice medio 

 carina parva inter duas lacunas ornato ; antennae inter basin 

 mandibularum et emarginationem oculorum insertae ; protho- 

 race ut in mari ; elytris subtilissime striato- punctatis, inter- 

 stitiis planis, apico spinis retusis ornatis • abdominis segmento 

 ultimo concavo. 



Long. 4 mm. 



Loc. Assam. 



