420 Rev. H. Clark on the Dytiscidae and Gyrinidse of Australasia. 



elytra very obsoletely pubescent, in colour flavo-fuscous, clouded irre- 

 gularly with a darker shade of fuscous ; these markings are for the 

 most part post-medial and broadly transverse, in some examples they 

 are almost obsolete, in others represented merely by an apical marking : 

 leys and antenna: flavous. 



The size of this species alone separates it from allied species of 

 this section. 



A very common species in S. Australia ; received from the district 

 of Moreton Bay by Mr. Bakewell. In the cabinets of the British 

 Museum, Mr. Bakewell, and the Rev. Hamlet Clark. 



25. H. Shudcardii, n. sp. 



H. ovatus, planus, subtiliter punctatus, rufo-flavus, fusco adumbratus. 



Long. corp. 1 lin., lat. \ lin. 



Ovate, sparingly and finely punctate throughout, of a rufo-flavous colour : 

 head impunctate, near the margin of the base is a very fine transverse 

 thread-like bine ; flavous or rufo-flavous in colour, the base being more 

 or less broadly fuscous : thorax sparingly punctate, more distinctly near 

 the base ; the lateral fovete are not parallel with the margins, but tend 

 inwards towards the middle ; the colour is flavo-rufous, the base and 

 middle being more or less broadly fuscous : elytra sparingly punctate, 

 of a rufo-flavous or flavous colour ; in some examples markings of fus- 

 cous obscurely appear, ranged longitudinally ; the surface is in all ex- 

 amples somewhat mottled : leys and antenna flavous. 



I name this species after Mr. Shuckard, in accordance with the 

 MS. name in Mr. Bakewell's cabinet. A common insect, apparently, 

 near Moreton Bay. In the cabinets of the British Museum, Mr. 

 Bakewell, Mr. "VVaterhouse, and the Rev. Hamlet Clark. 



26. H. amabilis, n. sp. 



H. ovatus, sat latus, subparallelus, punctatus, fuscus vel rufo-fuscua. 



Long. corp. l^-lj lin., lat. f-f lin. 



Ovate, broad, iuipubescent, distinctly punctate, rufo-fuscous : head 

 finely punctate, flavous or rufous, or sometimes fuscous : the sides of 

 the thorax are somewhat compressed anteriorly, the surface at the base 

 is distinctly punctate ; in colour flavous, the base being fuscous : elytra 

 subparallel, thickly punctate, rufo-fuscous : leys flavous : antetince rufo- 

 flavous. 



A somewhat variable species both in size and colour, and slightly 

 in form : the examples with the flavous head are a trifle larger and 

 more parallel, and elongated at the apex. I am unable to detect 



