Thomson. — Geology of Middle Clarence and U re Valleys. 349 



Postscript (February, rJl'J). 



After the above paper was written I had an opportunity of spending 

 two days at the Awapiri out-station in the upper valley of the Swale. The 

 structure of the Notocene rocks in this area proved much too complex 

 to unravel in tlie time available, but the following points were ascertained. 

 At the upper end of the Swale limestone gorge tlie up[)er part of the Amuri 

 limestone rests against the great Clarence fault without the interposition 

 of the "grey marls" and great Marlborough conglomerate. Farther to 

 the north-east an alternation of Amuri limestone and conglomerate occurs, 

 doubtless due to faulting, so that the limestone is rej)eated at least three 

 times. From a stratigraphical point of view the most interesting fact 

 ascertained was the presence of a mudstone resembling the "grey marls" 

 and containing rare Oamaruian fossils, which ap])arently lies between the 

 limestone and the conglomerate. This mudstone is in places crowded 

 with small and large rounded boulders of Amuri limestone. This observa- 

 tion points to the probability of an unconformity between the " grey marls " 

 and the lower beds. I hope to have an opportunity of revisiting this area 

 in the near future and furnishing a connected account of its structure and 

 stratigraphy. 



Art. XXXIII. — Descriptions of New Zealand Lepidoptera. 



By E. Meyrick, B.A., F.R.S. 



Communicated by G. V. Hudson, F.E.S. 



[Read before the Neiv Zealand Institute, at Chrisichurch, 4th-8th February, 1^19 ; received 

 by Editor, 12th February, 1919 ; issued separately, 28th July, 1919.] 



These notes are based as usual on inaterial kindly sent by Messrs. Hudson 

 and Philpott, and include ten new species. The discovery of an example of 

 the Diplosaridae shows that the possibilities of surprise are not yet exhausted. 



Caradrinidae. 

 Aletia falsidica Meyr. 



A c? (36 mm.), received from Mount Earnslaw (Hudson), has antennae 

 shortly bipectinated {a 1, b Ih), towards apex simple : this character esta- 

 blishes the distinction from griseipennis, which has antennae of o simple. 



Hydriomenidae. 



Chloroclystis semochlora n. sp. 



(5 ?. 26-28 mm. Head, thorax, and abdomen green, patagia tipped 

 with grey hairs beyond a black bar. Palpi 2, green, tip whitish. Antennal 

 ciliations fasciculated (3|). Forewings broad-triangular, termen hardly 

 waved, rounded, rather oblique ; green ; basal, second, and third fasciae 

 deeper olive-green, especially third, somewhat curved, waved, slightly 

 marked with black on edges, third preceded and followed by slight whitish 



