10 ARKIV FÖR ZOOLOGI. BAND 10. NIO 10. 



elongated points, are developed. Otherwise it agrees well with 

 the figure given by Régimbart (Ann. Soc. Ent. Fr. 1882, 

 Pl. 12, Fig. 56). 



3. Macrogyrus rivularis Clark. — Of the typical form 

 I have taken specimens at Glen Lamington, on Mt. Tam- 

 bourine and on the Blackal Ranges in southern Queensland 

 (Sept. — Oct. 1911). In most of them the internal stria is very 

 obsolete, hardly noticeable. 



This form has been placed as a variety of M. ohlongus 

 BoiSD. but in my opinion there are good reasons for keep- 

 ing both separated from each other. 



4. Macrogyrus paradoxus Reg. — The specimens are 

 from the interiör of Cap York Peninsula not far from Alice 

 River, September 1913. One specimen from Noonkanbah in 

 the interiör of Kimberley. The species was originally de- 

 scribed from Australia without any details, as has been the 

 case with so many of the Australian insects. Froggatt 

 (Australian Insects, p. 135) gives the locality «North West 

 coast of Australia» and «Southern Queensland». Thus it 

 seems to be widely distributed on the Australian continent. 



This species should most probable be separated from the 

 other ones and placed in a special sub-genus. 



5. Macrogyrus oblongus Boisd. — Several specimens 

 from Atherton, Evelyne, Cedar Creek, Yarrabah and Bellenden 

 Ker, North Queensland. — Froggatt (Australian insects, p.l35) 

 records the species from «the vicinity of Sydney», New South 

 Wales. 



6. Macrogyriis viridteiilcatus n. sp. — Body large, elong- 

 ated-oval, flat, richly metallic coloured; head (with labrum 

 and clypeus) and thorax more or less bronzy greenish, the 

 latter mostly with a blue band opposite the scutellum. Legs 

 especially in ^ very long, the anterior margin of femora 

 finely serrated, a character which recalls the species of the 

 genus Enhydrus Gast.; the first tarsal joint in ^ very long 

 and broad, as long as the second and first combined; inside 

 of tibise provided with dense yellow hairs. Scutellum with a 

 slight median impression. Elytra broad and flat, the margin 



