APPENDIX I. 1 



ADDITIONAL NOTES ON THE ONTOGENY, PHYLOGENY, 

 &c., OF CATERPILLARS. 



Ontogeny of the Noctua larvae. References have already 

 been given in a previous note (2, p. 166) to observations 

 on the number of legs and geometer-like habits of 

 certain Noctua-\z.rvx. when newly hatched. This inter- 

 esting fact in the development of these insects furnishes 

 a most instructive application of the principle of 

 ontogeny to the determination of the true affinities, /'. e. 

 the blood-relationship of certain groups of Lepidoptera. 

 While the foregoing portions of this work have been in 

 course of preparation for the press, some additional 

 observations on this subject have been published, and I 

 may take the present opportunity of pointing out their 

 systematic bearing not, indeed, with a view to settling 

 definitively the positions of the groups in question, as 

 our knowledge is still somewhat scanty but with the 

 object of stimulating further investigation. 



Mr. H. T. Stainton has lately recorded the fact that 

 the young larva of TripJicena Pronuba is a semi-looper 

 (Ent. Mo. Mag. vol. xvii. p 135) ; and in a recently 

 published life-history of Euclidia Glyphica (Ibid. p. 210) 

 Mr. G. T. Porritt states that this caterpillar is a true 

 looper when young, but becomes a semi-looper when 

 adult. To these facts Mr. R. F. Logan adds (Ibid. 

 p. 237) that " nearly all the larvae of the Trifida are 

 scmi-loopers when first hatched." The Cymatopliorce 

 1 By the Editor. 



