493 



G. adelaidae, Cast. Ooldea. 



Hypharpax deyrollei, Cast. Parachilna. 



H. inornatus, Germ. Ooldea, Winbring. 



H. interioris, SI. Birkett's Woolshed, Carraweena 



Higgins Dam, Lakes Crossing, Orroroo, Parachilna 



Strzelecki Creek. 

 H. ranula, Cast. Orroroo. 

 Mecyclothorax ambiguus, Er. Parachilna. 

 Phorticosomus grandis, Cast. Cooper Creek, Hergott, 

 P. horn i, SI. Lakes Crossing. 

 P. similis, Blackb. Hergott, Parachilna, Petermorra 



Spring. 

 Thenarotes tasmanicus Bates. Lakes Crossing. 

 Chlaenioidius herbaceus, Chaud. Carraweena, Strze- 

 lecki Creek. 

 Loxandrus australiensis, SI. Birkett Woolshed, Cara- 



weena, Cooper Creek, Higgins Dam, Strzelecki 



Creek. 

 Rhytisternus cyathoderus, Chaud. Carraweena, 



Cooper Creek, Farina, Kopperamanna, Higgins 



Dam, Parachilna, Strzelecki Creek, Trinity. 

 R. miser, Chaud. Parachilna. 

 Simodontus holomelaenus, Germ. Parachilna. 

 Platynus marginicollis, Macl. Birkett's Woolshed, 



Orroroo, Parachilna. 

 Pogonus zietzi, SI. Lakes Crossing. 

 Tachys similis, Blackb. Ooldea. 

 Bembidium jacksoniense, Guer. Birkett's Woolshed, 



Hergott, Oodnadatta, Parachilna. 

 B. subviride, Macl. Ooldea. 



DYTISCIDAE. 



Eretes australis, Er. 

 This species occurs in amazing numbers in many of the 

 interior waterholes, and is apparently one of the most 

 important food-insects of aquatic birds. Carraweena, Ooldea, 

 Parachilna, Strzelecki Creek. 



Antiporus gilberti, Clark. Birkett's Woolshed, Kop- 

 peramanna, Strzelecki Creek. 

 Bidessus bistrigatus, Clark. Kopperamanna, Para- 

 chilna. 

 Copelattjs reticulatus, Clark. Orroroo, Parachilna. 

 Macroporus howitti, Clark. Birkett's Woolshed. 

 Necterosoma penicillatum, Clark. Orroroo, Parachilna. 

 N. vittipenne, Macl. Parachilna. 

 Rhantus pulverosus, Steph. Parachilna. 



