318 



Ditoma perforata. Tn both the upper surface is devoid of costse- 

 and other protuberances, the eleventh joint of the antennae- 

 rudimentary, the sides of the prothorax denticulate, the head 

 without antennal sulci. It differs from perforata by its con- 

 siderably smaller size, its more cylindric form (elytra scarcely 

 wider than prothorax), the rugulosity of its elytra interstices, 

 tfcc. 



Northern Territory (Port Darwin) ; taken by Dr. Bovill. 



B. dentata, sp. nov. Sat elonsfata; sat angusta ; minus nitida ;^ 



nigro-picea, antennis pedibus scutello et corpore subtus 



rufescentibus ; capite pronotoque crebre minus grosse 



granulato-punctulatis ; hoc leviter transverso, ante medium 



subito dilatato, antice quam ad basin multo latiori, supra 



iequali, lateribus acute serrulatis ; elytris striatis, striis sat 



grosse punctulatis (puncturis in interstitiis fere confluenti- 



bus). Long., U 1.; lat., ^ 1. 



At once distingishable from B perforata, Blackb., and Bovilli, 



Blackb., by the somewhat sudden widening of its prothorax in 



front of the middle, which causes the front margin to be very 



much wider than the base In this species the lateral margin of 



the head is minutely angular behind the eye, standing out (under 



a strong lens) as a very small tooth, and more conspicuous on the 



under surface. 



S. Australia (near Adelaide). 



EBA. 



E. cerylonoides, Pasc. ? An example from Port Darwin seems 

 to agree very well with the diagnosis of this Malayan genus, nor 

 can 1 find any notable distinctive character to suggest its being 

 other than the typical species, which was described Journ. Ent. 

 II, p. 129. It is an interesting addition to the Australian 

 fauna. It bears much casual resemblance to the genus Cerylon. 



MERYX. 



I cannot satisfy myself that M. rugosa, Latr., areolata^ Pasc, 

 and illota, Pasc, are anything but one and the same species. The 

 only definite character that Pascoe cites to distinguish his two 

 species relates to the length and width of the prothorax. I be- 

 lieve the difference in the shape of the prothorax to be sexual ; 

 at any rate I [have before me two examples cf M. fpqualis, 

 Blackb., which were taken in company and which differ inter se 

 fully as much in the comparative width of their prothorax as 

 any two examples before me of the older species (which come 

 from various localities in Victoria and Tasmania). This diflfer- 

 ence is certainly very considerable and might justifiably be 

 regarded as specific if only a few specimens were available. 



