and Gyrinidae of Australasia. 411 



one on either side, near the inner margin of the eyes, in colour palf4v 

 flavous : thorax sparingly punctate, more distinctly so near the posterior 

 margin ; a narrow anterior depression also is rendei'ed more apparent by 

 deeper punctations ; in colour rufo-flavous, the lateral margins being 

 more pale : elytra very finely punctate throughout, with two striae of 

 deeper but sparingly distributed punctures ; in colour rufo-fuscous or 

 fuscous, the suture and the margins being more palely tiavous : legs and 

 antenna flavous. 



I have received a single example of the above species from Mr. S. 

 Stevens, from '* South Australia." 



9. H. insculjptilis, n. sp. 



H. ovatus, latus, punctatus, niger ; thorace fusco-nigro ; elytris punctato- 

 striatis. 



Long, coi-p. I lin., lat. i lin. 



Ovate, broad, impubescent, punctate, black, shining : head impunc- 

 tate, except under a high power, when faint punctures are discernible j 

 in front are two well-marked depressions near the inner margins of the 

 eyes ; in colovu: rufous : thorax punctate, more deeply and coarsely 

 towards the posterior margin ; sometimes the anterior disk is almost 

 impunctate ; the anterior margin is narrowly impressed -vA-ith more 

 distinct pimctations ; colour fuscous : elytra pimctate, a single stria 

 formed of somewhat deeper punctures is tolerably distinct in some 

 examples, colour fuscous black : leys rufo-flavous : antennce fuscous, the 

 base being flavous. 



In the collections of the British Museum, Mr. Bakewell, and the 

 Rev, Hamlet Clark. 



From the neighbom'hood of Adelaide. 



2. Oblongi : thoeax angulis posticis cum klytbis angulum 

 obtusum s^pe formans. 



10. H. Blakeii, n. sp. 



H. breviter oblongus, latus, crebre punctatus, fusco- vel flavo-ferrugineus. 



Long. Corp. lf-2 lin., lat. f-1 lin. 



Broad, subdepressed, impubescent, thickly punctate, of a dull ferru- 

 ginous colour, varjing in diflferent examples in degree, in some almost 

 flavous, in others nearly fuscous : head broad, with two indistinct de- 

 pressions between the eyes ; the surface is very finely pimctate, more 

 distinctlj' so near the base : thorax broad ; the sides subparallel, and 

 rounded towards the front ; the surface thickly punctate ; when seen 

 from behind, a narrow obsolete transverse basal depression is apparent 

 in some examples ; the basal line is very narroivly black in three or 

 four of the sixteen examples before me : the elytra are broad, generally 

 concolorous, and thickly and distinctly punctate ; in the more immature 



VOL. I. 2 H 



