148 M ERISTIC VARIATION. [I'AKT I. 



The tw>, following cases must be given here, inasmuch as 

 tli.-v relat,- t.. H..ni.i"-i- of the appendages in Insects; but in 

 tin-" case "t tli-- first the evidence is unsatisfactory, and in the 

 case ,,t' ili,- second there is considerable doubt whether the varia- 

 tion is reallv "I' the nature of Homoeosis. 

 77. Prionus coriarius : having elytra represented by leg-. 



'I'll.- following i- a translation of an announcement in the 

 Hi-ftu.i-r L'i't. Ztg., 1^40, vol. I. p. 48, which is copied from the 

 original communication t'. the Preussische Provinzial-Blatter, Bd. 

 \\. (Th.- latter journal not seen, \Y. B.] :- " One of my pupils 

 1. n.u-lit me to-day a male 7V/o////.s- coriarius, Fbr., the thorax of 

 \\hich is remarkably constructed. The homy covering of the 

 mesothorax is ali-'-nt. and in place of the elytra is a pair of 

 t'ullv developed legx which are directed upwards and backwards. 

 Tli,-,- legs an- in.-< rt-d at the points of articulation of the elytra. 

 Th'- metathorax >upports the wings as usual and the abdomen 

 is not hardened more than it usually is. In trying to fly, the 

 creature mov.-d these upwardly directed legs simultaneously 

 with its win^s. Th- -eutdliim is absent and the prothorax has 

 i.nlv two .-pines; other parts iionnally developed." Dr SAAGE, 

 Urami.-berg, 1.S39 : Hagen, in quoting this case, mentions that 

 th- >p.-eiint-n was att.-rwards seen by von Siebold, but gives no 

 reference to any writing of von Sii-hold on the subject. 



[If this >p,-<-im-M >till exists, it is to be hoped that a de- 

 scription of it may be published. In the absence of further in- 

 formation tin -re .-i-enis to be no good reason tor accepting the case 

 a- genuine.] 



;s Zygaena filipendulae </. Specimen possessing a supernumerary 

 wing arising in such a jiosition as to suggest that it replaced a leg. 

 This -].,-, -mien was originally described by UiCHARDSOX, N. M. r 



I-'i... 17. S'/ : /"'n.i nU^'inluhr, ' , having a supernumerary wing on the left side. 

 Tin- u]i]n-i li^'iir,- >h,'\\s the n.-iinitiou of the supernumerary wing. From drawings 

 liy Mr N. M. Kirn MIPM.N. 



/'/</,/ Cl,il. I.s!l. and was exhibited at a meeting of 

 the Ehitomological Society of London, 1MM. J'roc. p. x. The extra 



wing was in ^,-nei-al form and appearance like a somewhat folded 



