20 Mr. H. Scott on CorYlophidw//-om the 



(Hg. 22) aniied on the inner margin with a comb of long fine 

 teeth, becoming gradually shorter towards the base. Maxillce 

 (tig. 23) with the lobe finely setose; maxillary p'^^/' with 

 joint 2 large, obliquely truncate at apex, gieatl}'' ])roduced 

 and rounded at the outer apical angle, which bears six long 

 slender laminate ))rocesses (c£. Curylophus, Matth. Mon, 

 pi. iv. fig. Do), each of which becomes gradually broader 

 from the base out^wards, then tapers to a sharp apex ; the 

 outermost one is much the longest and is curved, the others 

 become gradually shorter inwards, the innermost ones being 

 almost the same length ; joint 3 very short, transverse ; 

 joint 4 a little broader than long, produced at the inner apical 

 angle, rounded off at the outer angle, bearing short hairs on 

 the almost truncate apex. Labium (fig. 24), so far as can be 

 discerned, shaped like a spear-head ; ligula very large and 

 broadly spatulate, truncate at apex, narrowed at base; lahial 

 palpi short and broad ; joints 2 and 3 both broader than long, 

 2 shaped like an asymmetrical cup produced on the outer 

 side, 3 a little narrower at its base than the apex of 2, its 

 truncate apex shortly setose. Proihorax semicircular, ante- 

 rior margin explanate, base bisinuate, hind angles produced. 

 Scutellum ti'iangular, broader tiian long, apex blunt. Ehjtra 

 very sligiitly broader behind the slioulders than the base of 

 the thorax, gradually narrowing behind ; outer margins not 

 much curved, explanate for about f of their length, the 

 explanate margin disappearing in the posterior ^ ; posterior 

 outer angles broadly rounded off, posterior inner angles 

 slightly rounded ; a fine sutural stiia is present, but vanishes 

 in the anterior 5 of the elytra. Wings ample (mounted in 

 balsam). Pt/gidiiun rounded, projecting a little beyond the 

 elytra. Aliddle coxre moderately, hind coxce widelj-, distant. 



Type of the genus, Daubania seychellnrum, sp. n. 



The only other known genus of Corylophidaj with 8-jointed 

 antennse is Oligartliram, Matthews (Mon. p. 127, pi. iv. 

 fig. C), established for a single species, 0. waterhoiiseij 

 Matth., described from a unique example from Chili. In 

 Oligarthrnm, however, antennal joints 2-5 differ absolutely 

 in actual form and relative proportions from the corresponding 

 ones in JJauhanii, as will be seen by comparing figs. 19 and 

 20. tlie latter of which is copied from Mattliews^s Monograph ; 

 so that, unless many intermediate gradations come to light, 

 the two insects can liardly be classed in one genus. 



The mouth-puts of Oligarthrum have not been dissected, 

 but Matthews states that, so far as he could see, they re- 

 sembled those of Corijlophufi. This resemblance is also 

 niaiked in J)auhania, as will bo seen by comparing my 



