:{5a 



IJctwccn tlic scoli wc sec in iiisiar // sniall Hctac. lii iiiHtar / 



IK) spots, hut iii iiisiiir // wc fiud K[)()i;s along- tin; fVoiif, and 



hacdv ('dj^cs of' tlic scj^inciits, tlicy are coiincctcd with (^acli oMicr 



hy a line ahovc the stig'iua. Jjatci' oii thcy ar(! iiT(!giihir. 



Family S/)/iiH(//(/<u'. 



Weismann's iin])ortaiit study (1S7(!) has Ikmmi iiKMitioiicd hcf'oic 

 in detail, (■hapter 11, j). (> s(j(|. 



MELDOiiA translatod this work in l(SS2 and (h'(ïw iittciition io Ihc 

 rcscndilanco witli the llaf^'cdhitc oc^'mii /'((/h'/Io and h/cntmird posscss. 



W. MüM.ER (1.S80, p. 250) rolatos aiiioug- othcr things that 

 the horii is c()iiii)os(h1 of tlie two priinary fiairs / = Ds. ol' the 

 (Stil abdoinirial segiiH;nt and giv(;8 a drawing of it. 



PoiJLTON (1884, IHSH, 1890) gave his attention to the (•oh)iii-s 

 of the pnj)a(' which iigr(;(! witli those of tlie caterpilhu's. I Ie; thinks 

 that tlie honi arises fVoni two tnherculii. I intend to diseiiSH 

 Poi'LTon's opinion on the (!oh)ni's in th(! chaptcsr on j)Uj)a(!. 



Dr. .)ur. M. C. Pikj'EKS puhlishcsd in 188!) a treatise in Dutch 

 and in a more cxtcnsive form in German in 1897. Pieimors, who livisd 

 for niiiny ycïars in tlie Dutch Kast-lndies, i-aiscd numerous S/ih/ii- 

 f/idue ffoni the egg. Ile found that the horn is vc^i-y nioviii)h'. 

 f.I. Til. ()i:i)EMANS discovered tlie particular muschïs wliioh cause 

 this movement|. Then hc discusses the hypothesis of Til. Goossens 

 (KST.'i) who thought that the horn serves to protect the glands 

 hy which the urine is s(M',i-(!ted. Pjki'Küs thinks it is uscd to 

 drive away th(! Ichneuinonidac iiiid 'r<ir.hhi'nia<'. IMie granulation is 

 the consequence of a secondary disaj)pearance of prickles so tliat 

 the organ inay have been a poisonous prickle forinerly. 



Piepers found also that in the beginning the liorn possesscïH 

 two points. 



Packard (1890, p. 518) is remarkably sliort in treating this 

 organ, but in 1905 he discusses it at length. With it he draws 

 figures of Ceteromia amyntor. His PI. XXXIV and XLII agree 

 almost entirely with mine of SpJmir Uymtri^ in so far as there 

 iire no scc(mdary setae (^xcept on the horn, and witli Smerinthita 



