INTRODUCTION. 25 



Metamorphosis in folliculo ovato vel globoso duro. As an European example, I can- 

 only adduce the Apoda Tesludo, Haw. Lep. Br. p. 137 : in the Javanese collection 

 are contained numerous species, which are considerably diversified, and of most of 

 these the metamorphosis has been observed and delineated. 



I place immediately after the stirps with verticillate larva another stirps, which 

 I have denominated Pilosa : although I have not attempted a natural succession in 

 this tribe, yet it appears to me that the structure of the folliculi or cocoons, with 

 other particulars, indicates a relation of affinity between these two stirpes. The first 

 typical genus may be considered to be Lasiocampa of Schrank : comprising part of 

 the genus Gastropacha of Ochsenheimer ; the genera Odonestis and Eriogaster of 

 Germar, also belong to this stirps. I shall not at present attempt to define the 

 relative limits of these genera ; but I must remark that, in my opinion, Ochsenhei- 

 mer deserves no commendation for deserting in the Lepidoptera Nocturna the plan 

 of adhering to the system of the Vienna Catalogue, with which he commenced ; 

 and for declining to adopt several generic names of Schrank, which represent the 

 structure of insects in the larva state, and among others Lasiocampa. Agreeably 

 to this view he expressly states, vol. iii. Preface, p. vi. : " For this reason I left 

 several names of Schrank, which were taken from the larvae alone, unemployed." 

 The families I, K, and L, of the W. V. belong to this stirps : Fam. I. p. 56, 

 Larva? Collaria? : Larva subhirsuta nucha incisura segmenti secundi et tertii ccerulea 

 aut fulva. Fam. K. p. 56, Larva? villosce : Larva segmentis tomento tectis. Fam. L. 

 p. 57, Larva? pilosa? : Larva elongata, mollis, tota lanugine tenui tecta, omnibus 

 strigarum fasciarumque coloribus pellucentibus. The latter may be considered as 

 typical of the stirps. 



A fourth stirps of Bombycidaa I have likewise named after one of the families of 

 the Wiener Verzeichnis, Lignivora : it comprises the Fam. M, N, and O. In most 

 of these the larva is naked, or has but few loosely scattered hairs, as appears from 

 the characters of the families. Fam. M, Larva? Subpilosa?, p. 59. Larva mollis 

 (nigro variegata) nuda, punctis nigris solis fere pilis solitariis. Fam. N, Larva? Lig- 

 nivora? : Larva levis pilis rarioribus, mandibulis validis : (in ligno putrescente 

 victitat) p. 59. Fam. O, Larva? Radicivora?, p. 60 : Larva nudiuscula, capite tho- 

 raceque nitidis (sub humo degit), metamorphosis intra terram in tela oblonga granis 

 terreis commista). The typical genera are Pygasra, Cossus and Hepialus. The 

 metamorphosis of the Fam. O. has some resemblance to that of the genera Psyche of 

 Schrank and of Oiketicus of Guilding : and these appear to be allied to Hepialus, 

 &c, but the determination of their proper situation in the circle of Bombycidse re- 

 mains for future discussion. 



In the last stirps of this tribe which I shall enumerate, the larva is greatly 



e diver- 



