PIERIXAE: THE TRIBE PtERIDf- lloO 



\'erT manT gpecic g of thi* ^roap are minuckers of other bvtterfies, 

 Mpeciallv so tho«e of the genu* Lepcali?. whidi, writes Bates (Joom. 

 entom.. 1^1, 230), "was supposed, boch br BoeduTal and Doab! 

 to have s real affinity with the Hel: he speoea not oalj reeemDi^ 



that funilv in ^hape. maridng and ' ler also ksTe. as DodbledBj* 



states, a structural similaritr to species of Itiiomia (a kefieonideoos geaas) 

 in the nenration of the wing^. The two gro u p s furnish a most g u iiot is in- 



«'-"-^ ..r.l T.r-re analogical resemblance. There is. in truth, the widest 



c between the two in all essential character; of affinitj — 

 a tact which the carefiil study o( the legs in the Rbi>palocera will ^att§&c- 

 tori! the resemblance in the wii^-aenratioa, this diaraecer 



lose- - ^ a account of its adapcire nature, bei^ 



the shape of the wing, habit? and strength of flight, and Taiying 

 quently in nearly allied genera.' None of our species are mimetic. 



The eggs, though tall, are not so eioagatedorfnafoniae in the Khodo- 

 ceridi : they are usually laid on the under surface of kares. ikerer in «£zect 

 contiguity, though large numbers may <rften be found on die same leaf, 

 son -'I in open chisters. Thos I once counted seTenty-^ix 



^3:^ . . ._ai braaacae in a cluster in which the eggs w«e clc-ee 



together, but with no two of them actually touching. ^Many cateipillarB 

 may consequently be found upon a single plant, though rardy liring 

 -'iety. They are long and very skader and preserve tiurough- 

 rumpet-tipped. hollow bristles found on the body of the young 

 larvae and so generaDy characteristic of them ; up to maturity, too. these 

 bear at their extremity a globule of pellucid fluid which seeoE to be under 

 the control o( the creature. The chrysalides are more <x^ less angulated and 

 always straight, without any protmaon of the wing cases. Most of the 

 species appear to winter in the chrysalis state. 



The caterpillars of the European Apocia crataegi are said by Botsdnval 

 (and Grisener repeats the statement) not oidy to live in society, but to 

 spin in the autumn a web betwe«i the forl^s of trees or a silken teat, 

 with'm which they conceal themselves and so hibernate, onerging in the 

 spring by breaking the web. and feeding upon young b4ids so as some- 

 times til do great damage. I have, however, seen in the Moseom of com- 

 parative zoology at Cambridge what purport to be the dnstexed winter 

 eggs of this ^tedes. covered with an envdopiag, tnaepareat, jdh--like 

 substance. — much as in the case of some reptiles, and altogether imparal- 

 leled, so far as I know, in butterflies. 



The caterpillars o( this tribe, and particularly o{ \f tai ipiiim. have in 

 past times forme' '' :he pharmacopoeia of Euiv>pe. 



A fossil butter - group has been fbond in the European terti»- 



ries. belonging, indeed, to one of our own genera : and another has beea 

 found in the tertiaries of Florissant. Col. 



