Species of Haliplidce and Jlydroporida. 427 



fortiter eraarginato, lateribus subrotundatis basi pene recto, 

 transverse, rufo ; elytris parallelis, ad apicem subacumi- 

 natis, leviter striato-punctatis, rufo-ferrugineis ; corpore sub- 

 tus, pedibus antennisque rufis. 

 Long Corp. lin. 1 ; lat. lin. |. 



A pretty and well defined species, elongate rather than sub- 

 globose, with elytra more parallel than in the preceding species ; 

 the punctures on the elytra are more distinct, the thorax is less 

 transverse, its basal margin consisting rather of a straight trans- 

 verse line than of an angle ; the whole body is more depressed, 

 the margins of the elytra being close to the paper on which it is 

 gummed, as compared with those of the preceding species ; the 

 colour also of the elytra is darker ; from other Eastern species it 

 may be distinguished (so far as they are already known) by the 

 absence of any longitudinal striae at the base of the thorax or the 

 shoulder of the elytra. 



Received by Mr. Bowring, from Java. 



7. H. tenellus, n. sp. 



Oblongo-ovalis, attenuatus, apice acuminatus, rufo-flavus, im- 

 punctatus, nitidus ; capite rufo, impunctato ; thorace late trans- 

 verso, antice subemarginato, lateribus sat rotundatis, leviter 

 marginatis, basi (superne viso) transverso, flavo, maculis 

 transversis ad apicem obscure rufo-flavis ; elytris ad humeros 

 thorace baud latioribus, ad apicem acurainatis, impunctatis, 

 rufo-flavis, ad margines flavis ; pedibus, antennis et corpore 

 subtus flavis. 



Long corp. lin. § ; lat. ^^ lin. 



One of the smallest species of Hydroporus with which I am 

 acquainted : in its oblong-ovate form it resembles much an elon- 

 gate Laccophilus ; the outline of the marginal line extends without 

 any interruption or angle in one continuous curve from the head 

 to the apex : its elongated form abundantly separates it from the 

 preceding species of this subsection, while the absence of thoracic 

 fovese removes it from other species of the genus to which in form 

 it is allied. 



A single example was received by Mr. Bowring, from Java. 



§ B, Thorace stria longitudinali vel obliqua haud elytris 



CONTINUATA. 



8. H. orientalis, n. sp. 

 Oblongo-ovalis, subparallelus, post medium paululum latior. 



