(Muii 



342 Dr. T. A. (Tiapnian's Further Xofes on 



nuicli longor. pivbably till period oi oveninu rii^ht in most 

 cases. 



Phalera hticephaln. The restins: attitude in most Noto- 

 donts is the normal one with the winirs in ixMit-house 

 jH>sition. In hncrjJiohi this is. one may say, exaniie rated, 

 so that thewini:s eurl round the binly in such a way that 

 the costae of the fore-wings approach each other beneath 

 the insect, and the apices are never more than a few milli- 

 metres apart, and may touch if the object on which the 

 moth rests permits or favours this. 



The wings expand to a position in which their surfaces 

 form a tiat arch over the dorsum, tiien they are thrown back 

 in the usual way into buttertly attitude. They remain so, 

 drying, for half an hour, and are then deflexed to about 

 the arched jx^sititui to which they expanded, the surfaces 

 of the fore-wings being at an angle of about 110\ the inner 

 margins in contact and the apices "25 mm. aparL In about 

 an hour the angle of the wing surfaces to each other i^ 9lV\ 

 and the apices are only U> mm. apart. The wings have 

 already a Uttle curvature. In another hour the tips are 

 only 9 mm. apart, and in successive hours they are no'ed as 

 6 mm.. 4 mm. and 3 mm. apart. Three houi"s nu^re they 

 are observed to be touching; this nioven\ent. fn>m the 

 rather Hat pent-lunise position, to that of the wings being 

 so curled round the body, is gradual, with no actual move- 

 ment observed at any time, and would appear to depend 

 on the gradual acquirement by certain wing nniscles of 

 the necessary tonicity. 



H.abruptaria emerges in the afternoon about 4 or op.m. 

 A specimen kept the wings in ordinary Geometer position 

 (triangular) from 0.30 to 7.30. though disturbed once about 

 the middle of this period. Ten minutes later (T.tO p.m.) 

 it had assumed the oixiinarv resting attitude of the species 

 with the fore-wings advanced. 



T. consonoria emerges about t ]\ni. An hour later the 

 wings are expanded and the buttertlv attitude taken, and 

 in another half-hour they are defiexed to the ordinary 

 triangular Geometer res'.ing position, which is maintained 

 for at least two hours and probably as a rule till the time 

 of flight, but on earlier disturbance the usual resting ]>osi- 

 tion with advanced fore-wings is assumed on resting again. 

 I did not ascertain after how short a period in the triangular 

 posit i<ui this would (>ccur. 



In Tephn^'hfslis Iso'irdninttild the wii'iis wtMo maintained 



