20 The Cane Grubs of Australia. 



REPSIMUS AENEUS Fabr. 



The Larva. 



Stage II. were obtaiucd on the following dates :— October 1st, 3rd, 

 7th, November 3rd, December 23rd, Jannary 30th, February 24th, 

 August 19th. Stage III. larva; recently moulted from Stage II. were 

 taken on January 30th. Thus the life cycle lasts for more than one year. 



Most. of the larva^ were found in alluvial sand loam, a few in almost 

 pure sand; a single Stage III. was collected by following a plough in a 

 dark loam lowland canefield. May 9th, the soil containing sugar-refuse 

 manure. 



The Pupa. 



Several pupa^ in November from alluvial sandy loam. 



The Adult. 



Adults were occasionally captured at lights in the end of December 

 and throughout January. A single beetle was taken in company with 

 Anoplognathus hoisduvali eating foliage of the bloodwood (Eucalyptiis), 

 22nd January, 1915, and another clinging to leaves of sugar-cane in a 

 field. On 30th January, 1915, beetles were not uncommon on young 

 foliage of bloodwood on lower slopes of Mount Pyramid. 



ISODON FUNCTICOLLIS Macleay. 



The Larva. 



This species has been confused with Dasygnaflius australis in Girault 

 and Dodd's paper, and many of the Stage II. records given of that species 

 may belong to this. 



Stage I. has been found on the following dates : — November 7th, 

 24th, December 10th, 19th; Stage II. on September 24th, October 28th, 

 November 3rd and 7th; Stage III. on April 13th. June 16th, September 

 2nd, 24th, October 6th, 28th, November 3rd, 7th, December 2nd. 



The larvae are usually found in patches, several such patches being 

 present in the one field, while the soil between may be quite free from 

 their presence. Of the number collected 97 were from volcanic soils 

 and 3 only from the dark loams, and the species evidently favours the 

 volcanic soils ; several were also collected in one lot from an alluvial 

 sandy loam rubbish-heap with weeds growing on the surface. 



Stage III. larvae on October 28th had recently moulted from 

 Stage II. 



The Pupa. 



Pupa3 have been obtained on the following dates : — September 24th, 

 December 3rd, 21st, January 18th; on the latter date several were taken 

 from a breeding cage. 



The Adult. 



In confinement adults emerged December 11th, October 30th. Odd 

 individuals have been eaptftred at lights October 2'3rd, December 12th, 

 16th, 20th, March 5th; digging in sand river-bed on August 16th pro- 

 duced a single beetle; one flew to light, Harvey's Creek, October 10th. 



