229 



OCHTHEBIUS. 



0. hrishanensis, sp. nov. Minus latus ; minus nitidus ; piceo- 



niger, vix senescens. pedibus antennisque rufescentibus ; 



capite prothoraceque valde insequalibus, vix perspicue 



punctulatis ; hoc transversim qnadrato (in disco sulco 



longitudinali mediano, sulco oblique in parte postica utrin- 



que posita, et utrinque fovea antica, impresso), parte ex- 



planata laterali quam disci dimidium vix angustiori, lateribus 



fere rectis ; elytris minus perspicue striatis, seriatim sat 



fortiter punctulatis, interstitiis sat planis, sutura elevata. 



Long., 4 I. ; lat., | 1. (vix). 



The previously described Australian Ochthehii are australis, 



Blackb., and novicius, Blackb. The latter is a much larger species 



of considerably wider form. The former is of about the same 



size as the present insect, but more nitid, of a reddish-piceous 



colour and of somewhat wider build. Moreover the sculpture of 



its head is entirely different. Looked at obliquely from the front 



the head (excluding the clypeus) in australis is seen as divided into 



5 elevations (2 ridges on either side placed one behind the other 



and a central tubercle) ; while the corresponding piece in the 



present species from the same point of view is seen as an area 



bearing a large deep fovea on either side of the middle the space 



between the fovese being comparatively narrow and elevated like 



an obtuse ridge. 



Queensland ; near Brisbane ; sent by Mr. DeVis. 



HYDR^NA. 



II. evanescens, sp, nov. Ovalis ; subnitida ; obscure rufo-brunnea, 

 capite nigricanti, prothoracis lateribus (nonnullorum 

 exemplorum) pedibusque testaceis ; capite vix perspicue, 

 prothorace crebrius subtiliter, elytris subtiliter seriatim, 

 punctulatis ; prothorace leviter trans verso, antice parum 

 angustato, basin versus transversim (et prope angulum 

 anticum subrotundatim) impresso; elytris postice obtusis, 

 subtiliter seriatim punctulatis. Long., 4 1.; lat., \ 1. 

 This pigmy is distinguished from all the other described Aus- 

 tralian HydrcBncB by its minute size. From Torrensi, Blackb., 

 and acuti2?e7inis, Fairm., it also dijBfers by its elytra being blunt 

 at the apex; and from luridipennis, Macl., and simplicicollisj 

 Blackb., by the much finer puncturation of its prothorax. 

 Queensland ; sent by Mr. DeVis. 



CYCLONOTUM. 



C. Cowleyi, sp. nov. Late ovale ; minus convexum ; modice 

 nitidum ; rufum, elytris piceo-nigris ; supra sequaliter con- 

 fertim subtiliter punctulatum, sed elytris puncturis minus 



