BY E. MEYRICK, B.A. 519 



248. Eriod, vemalis, n. sp. 



Minor, alis ant. elongatis, ochreo-griseis, creberiime cano-con- 

 spersis ; post, dilute griseis. 



(J. 14-16 mm. Head, palpi, antennae, thorax, abdomen, and 

 legs grey-whitish ; anterior legs dark fuscous Forewings elongate, 

 narrow, costa moderately arched, apex pointed, hindmargin 

 extremely obliquely rounded ; ochreous-grey, densely irrorated 

 with white : cilia white, irrorated with grey. Hindwings light 

 grey or whitish-grey ; cilia grey- whitish. 



One of the very earliest spring insects, easily neglected. 



Sydney, New South Wales ; four specimens in August. 



Notes on the Geology of the Southern Portion of the 

 Clarence River Basin. 



By Professor Stephens. 



The Delta of the Clarence River, now notable throughout 

 Australia as a district in wmich the Sugar Cane can be profitably 

 cultivated by free white labour, lies, like all the deltas in New 

 South Wales, entirely inland. The strong current which sweeps 

 along the eastern coast, and maintains by means of its tepid waters 

 a subtropical climate and vegetation as far south as Illawarra, also 

 carries away to the southward and to sea all the mud and fine 

 sediments which are discharged by this and its sister rivers. Only 

 the heavy si.icious silt remains behind, which, together with the 

 sands pounded out of the sea cliffs by the unceasing action of the 

 waves, forms at the mouth of every estuary a curving line of 

 dunes, concave to the sea, and resting at each extremity upon 

 headlands of solid rock. The immunity from winter cold and 

 spring frosts which the Clarence enjoys more than any river to the 

 south, and more than most to the north, until the Tropic is 



