and Gyrinidse of Australasia. 409 



the surface is more distinctly punctate, in colour flavo-rufous, the 



medial posterior disk being black ; this medial marking varies in extent 



in different examples, and some-times contains within itself a basal 



circular flavdus patch : elytra very finely and thickly punctate, in 



colour black; from the humeral angle proceeds an irregular flavous 



marking obliquely towards the suture, behind which also is another 



irregular transverse flavous marking ; the margin is also more or less 



distinctly flavous; in some examples these markings are severally 



absent, and in some few examples they are all entirely absent, the 



elytra being wholly black : legs and antenna rufo-flavous. 



This pretty species is subject to considerable variation in colour ; 



it appears to be a very common species near Adelaide. In the 



collections of the British Museum, R. Eakewell, Esq., and the Rev. 



H. Clark. 



5. H. Thoreii, n. sp. 



//. ovatus, valde punctatus, rufo-flavus ; thorace punctulato, nigro mar- 

 ginato ; elytris rufo-fuscis, quinque flavis striis undique ornatis, sub- 

 pubescentibus. 



Long. corp. 1^ lin., lat. § lin. 



Ovate, broad, thickly punctate throughout, rufo-flavous : head im- 

 punctate : thorax very finely punctate ; when seen through a fine lens, 

 somewhat more distinctly punctate at the base, narrowly margined 

 with black : elytra very finely punctate, in colour rufo-fuscous, with 

 five parallel longitudinal flavous lines extending from the apex to the 

 base ; the surface, when viewed obliquely, is seen to be finely clothed 

 with pubescence : legs and antenna flavous. 

 A single specimen has been forwarded to me by M. Thorey, of 



Hamburg, to whom I am indebted for several interesting species of 



this group, with the locality " Tarangoo, Nov. Holland." 



6. H. fjigas, Boheman (' Eugenies, Resa, &c.,' Stockholm, 

 1858, p. 18). 



H. oblongo-ovalis, modice convexus, supra niger, subnitidus, creberrime 

 punctulatus ; capite medio, palpis, antennis, corpore subtus pedibusque 

 testaceis ; prothorace lateribus anguste ferrugineo-marginatis ; elytris 

 breviter cinereo pubescentibus, fascia insequali basali maculisque 

 quatuor pone medium flavo-testaceis ornatis. 



Long. 6}, lat. 3| mill. 



Patria Nova Hollandia (Sydney). 



Caput supeme paruni convexum; prothorax longitudine duplo et 

 dimidio latior, apice subtruncatus, utrinque leviter sinuatus, lateribus 

 tenuiter reflexo-marginatis, angulis anticis prominulis acutis, posticis 

 rectis, superne parum convexus, niger, nitidus, extrorsum anguste rufo- 



