INVESTIGATIONS ON SCIAPHILA WAHLBOMIANA, ETC. 65 



thyllis vuhicraria, Medicago sativa, Vicia sejyium, Seclam 

 maximum, Angelica sj/lvestriSj j^gopodium 'podagraria, 

 Bupleurum falcatum, Cirsium sp., Centaiirea scahiosa 

 and phrygia, Solidago virgaurea, Chrysocoma linosyris, 

 Achillea millefolium, Serratula tinctoria, Chrysanthemum 

 corymbosum, Artemisia vulgaris, Hieracinm sp., Primula 

 veris, Saxifraga rotundifolia, Phyteuma spicatum, Salix 

 sp., which is certainly very satisfactory testimony to the 

 polyphagous habits of a Sciaphila-lavvsi. 



Hence it may frequently chance that we fin<l on the same 

 individual plant larviB both of 3Ii7iusculana and Wahlbo- 

 miana at the same time; the former generally full-grown and 

 nearly ready for pupation, the latter not yet fed up. The 

 imago of Wahlbomiana appears in the second half of June, 

 and one may jQnd it to the middle or end of July. 



Among the numerous larvas of Sciaphila JVahlbomiana 

 which I have observed, I have found only two constant 

 varieties, namely, var. a. dark grey-green or blackish, with 

 black head and black thoracic shield, and small black 

 inarts, which, however, are not pale-margined, as in Minus- 

 ctdana ; the anal plate is round, yellow, broadly margined 

 w^ith black ; beneath it is a small plate of black chitiue, fur- 

 nished with 6 thorns. 



This larva, precisely with the above described colouring, 

 especially the anal plate, I have hitherto only found four 

 times, generally very early in the spring (April); once only 

 as late as the 19th May. The food plants were Ccrastium 

 arvense, Onoiiis spinosa, Hieracium sp., and Senecio 

 vulgaris. 



The pupa has at the anal end tw^o small pointed thorns, 

 larger than in Minusculana, and smaller than in Wahl- 

 bomiana ; the hairs are recurved, hook-like, as in Sc. 

 minusculana. 



1873. F 



