ADDITIONS AND CORRECTIONS. 1927 



570, liue 16, for do, read, does. 



572, line 12 from bottom, the $ sign should precede discernible. 



614, line 7 from bottom (and in several other places), /or Scoharie read Schoharie. 



697, line 5, for Virburnum, read Viburnum. 



717, line 2G, /or mimicry, read examples of mimicry. 



740. Life history. Although, as recorded on p. 737, A. plexippus was exceedingly 

 abundant in the northern half of New England in the autumn of 1888, aud the winter 

 of 1888-1889 was unprecedentedly mild, with an exceptionally early spring, no butter- 

 flies had been observed, so far as I can learn, up to May 30 (the present writing), when 

 one was heard of; all of which accords perfectly with the account of tlie life history 

 given in the text. 



753, line 15 from bottom, the comma should come after surface. 



758, lines 7-8. Thais, and therefore in the highest probability Thaites, does not 

 belong, as I thouglit on insufficient examination, to the Paruassidi but to the Papilionidi. 

 The egg is precisely as in the swallow tails, and the division of the segments of the 

 caterpillar as well. 



770, second paragraph. The chitinous annuli of the first stage of the caterpillars of 

 tlie Lycaenidae cannot l)e said to Ije unique, for the crateriform annuli of the Hesperi- 

 dae must be regarded as homologous structures. 



776. The eaily stages of the Lemoniinae. When I wrote this section, and in- 

 deed until some time after its puljlicatiou, I had never seen Sepp's Papillons de 

 Surinam, by the later obtaiuing of wliicli I am obliged to make some modifications. 

 Thus, Sepp asserts that the caterpillar aud chrysalis referred by Stoll' to Euselasia cro- 

 topus do not belong here, but to the immediate neighborhood of the one whose trans- 

 formations he figures as Papilio mamraeae, aud which is catalogued by Kirby under 

 Nymphidium, thus transferring the insect from the Nemeobiidi to the Lemoniidi. 

 This, considering the other mistal^es made by StoU', and the confident expressions of 

 Sepp, we could easily believe; only it is a little curious that Sepp says of his insect 

 that the caterpillar is processionary, which Bar also asserts of Euselasia gelon; it is 

 of course in no way impossible that such a feature sliould occur botli iu Euselasia and 

 Nymphidium, but talven iu connection with tlie evident error of either StoU' or Sepp, 

 it is not a little strange, aud some verification of the observations is evidently re- 

 quired ; our present knowledge of the early stages of the family will hardly permit 

 us to judge which was in error. 



Sepp figures no less than six species of Lemoniinae witli their early stages, and oddly 

 enough, consitlering the few that are given by StoU', two of StoU's species are repeated 

 by him, which enables me to make some rectifications. One of these is in Helicopis cu- 

 pido (see p. 779) ; here I have evidently made the mistake of taking for the cast-off'lar- 

 val skin what StoU' had intended for the front view of the larva, looking out of one end 

 of its nest in a rolled up leaf. StoU's representation is very poor, but the point 

 brought out regarding the size of the head is the same, and is warranted Ijy Sepp's far 

 better figure; here, too, is evidently the better source of the statement I thought with- 

 out warrant, that the caterpillar constructed a nest much after the mauner of the leaf 

 rollers, which Sepp's figure distinctly shows, and which he also distinctly states, add- 

 ing that it is more closely rolled, and the open end closed when the caterpillar is about 

 to change to chrysalis. 



The other butterfly whose transformations are given by both authors is Stalachtis 

 calliope, which Sepp tells us lays eggs in a mass, the caterpillars remaining in company 

 until they change. The figure represents the caterpiUar as having the same proportions 

 as StoU's, but the head a little larger, and the same shield on the anterior and posterior 

 segments of the body ; but what I had taken for black points on the intermediate seg- 

 ments are now showu, in the light of Sepp's figure, to be not mediodorsal, but latero- 

 dorsal or supralateral, and to be merely the bases of the series of supposed fascicled 

 hairs; these, however, iu Sepp's figures, certainly do not represent fascicled hairs, but 

 what are apparently long and tapering spiniferous filaments. As to the chrysalis, 

 Stoir and Sepp are again opposed ; the chrysalis given by Sepp, though closely resem- 



