1892.] 227 



The first larvse ready to spin were supplied with loose moss, but 

 so long were they in settling down, that it scarcely seemed to be the 

 right thing. Afterwards I made small bundles of strips of bark, and 

 placed the larvae on them. Here they were thoroughly at home, and 

 disappeared at once, making their cocoons between the pieces, or under 

 some convenient ledge or bit of lichen. The cocoon is an elegant 

 structure of white silk — outside is a roomy open network, and within 

 the cocoon proper a closely woven fusiform chamber. 



I liave already mentioned the appearance of the larva at the end of winter — a 

 small, yellow, cylindrical grub, with black head plates and legs ; and its change of 

 colour to a delicate green on resuming feeding. As practically no further change 

 takes place beyond some deepening of the ground colour, a single description will 

 suffice. 



The full grown larva is of moderate proportions, with a tendency to slenderness 

 if anything ; it is somewhat attenuated behind and less so in front, and has a bristly 

 look from the unusual prominence of the hairs. Colour, a pure and rather deep 

 green ; head shining black, with brown mouth parts ; thoracic plate shining black, 

 with a narrow green dividing line ; anal plate also black, sometimes only spotted 

 with black ; spots small and blackish-green, emitting short white hairs ; legs blackish 

 or dark grey. When ready to spin it turns a still deeper green. Pupa uniformly 

 yellowish-brown ; of the usual Tortrix shape, having short wing cases, and a long, 

 tapering, mobile abdomen, as pliant as a whip. 



Tarrington, Ledbury : 



August, 1892. 



A COLLECTING EXPEDITION TO EAST SUSSEX. 

 BY GEO. T. PORRITT, F.L.S. 



After an interval of sixteen years — with the exception of a single 

 day by each of us — on the 2nd June last, my friend, Mr. W. H. 

 Tugwell, of Greenwich, and I started on a collecting expedition to 

 Abbott's Wood, Sussex. We made Ilailsham head quarters, and 

 worked together until Saturday, the 11th, when Mr. Tugwell returned 

 to London, but I, not being able, so late in the day as he left, to get 

 through to Huddersfield, stayed over until Monday. The weather, all 

 through our visit, was everything we could desire, and Lepidoptera, 

 both day-flying and night-flying species, were in profusion. The most 

 striking feature was the extraordinary number of moths which visited 

 the sugared trees in the evening, and this, notwithstanding that the 

 atmospheric conditions on most nights were directly opposed to what 

 are usually supposed to favour " good nights." With a bright, almost 

 full moon, north or north-east wind, and scarcely any moisture in the 



Y 2 



