Hale — Aquatic Hemiptera 



415 



or less infuseated with red and sometimes with a small triangular black spot near 

 each anterior angle ; about as long as the pronotum. Metanotum and upper side 

 of abdomen testaceous marked with black, or black. Underside of abdomen black, 

 with ventral carina and edges of segments testaceous. Anterior tibiae 1-6 times 

 longer than tarsi, which are more than twice as long as the claws. Length, 11 mm. 

 to 12 mm.; width, 3-2 mm. to 3-5 mm. 



9 Vertex not produced as in male, projecting only very slightly in front of 

 the eyes ; swellings on notocephalon a little larger and converging on face, which, 

 seen in profile, is almost straight; synthlipsis 1-3 to 1-5 in vertex, 21 to 2-5 in 

 the width of an eye. Pronotum. about 1-75 times wider than long. Scutellum 

 longer than pronotum. Anterior tibiae 1-6 times longer than tarsi; first tarsal 

 segment 1-5 times longer than second, which is little longer than a claw. Length, 

 10-5 mm. to 13 mm.; width, 3 mm. to 3 5 mm. 



Fig. .368. Anisops stali. 



Hob. South Australia: Murray River (H. M. Hale), "N.W. of South 

 Aust." (Dr. H. Basedow), Bordertown (J. G. 0. Tepper), Cordillo Downs (F. 

 Archer; Central Australia: Cooper's Creek (J. G. Renter), Boorgline Waterhole 

 (Elder Expedition), Andamed Station (A. F. Roberts); Northern Territory: 

 (Capt. S. A. White), Port Darwin; Queensland: Cunnamulla (H. Hardcastle), 

 Karoongooloo Station (H. S. Allnutt) ; New South Wales: (type locality). Hay 

 (A. M. Lea) ; Western Australia: Wyndham (S. Stephens). 



This is the largest species recorded from Australia. Its form- is robust, the 

 body being deep and, seen sideways, considerably arched on the back, so that the 



