CEXOCYTES OF PLATYPHYLAX DESIGXATUS. 22Q 



This apparently disappear- in later stages. The hulk of the 

 chromatin appear- in small, rounded granules connected to form 

 a skein. One easily observes several larger ma--e- of chromatin 

 -landing out rather conspicuously in the nuclei of the ienoc\ 

 of all the larval -tages. The nuclear membrane appear- -harply 

 defined in all of th. .1 the imasjnal. 



Be-ide- ,i relative increase in the size of the cell, there appear- 

 little change in the character ,,f the oenocytes up to the la-t larval 

 Ai this period the nucleus b< 'riionately much 



uid mure irregular in outline. Th' 'la-m -ho\\ -. be- 



en the nuclear membrane and cell boundary, an inner and 

 an outer /one <,r l.i\er. The more central of ihe-e i \\ o I.e. 

 -hou- th' ontain more and larger vacuoles, and 



to ha\e ,i d' die outer, -mailer /one, on the 



con md -mal' None f tlie-e 



ir, but -pile m. iv di-tingui-h in the l.i 



b\ i ..!' ful :' USinj . main mule-, which \\ould -eem 



to ind: .f more than a hoi .nteiit. 



Til' . . YVheeler 



.iiu! oilier-, all o| whom iir them as indicatixe of 



ler (1892 \ aciK.le- are 



bin and an- not Thi- condition 



the o-n mid ill a number of |. : nd I beliexe. 



represents .1 normal i I )nc i^ reminded 



'- \\ hi. -tic -lib-tain e 



in iher .n." 



In the |nipal si find- that the nucleu- ha- a more ir- 



:lar outline, and th.it tin ia-m contain- comparatively 



tf\\ vacuoles. It i- in th: e that the oenocytes attain their 



l.n. .\\tli. 1'hi- .upleil with the appearance- ,.| 



dvity in the late larval ! ma\ perhap- be taken as indication-; 



of a great -i\it\ of the-e cell- during the-, i \\ 



period-,. 



In ihe imago, jn-I after enu imw marked 



- of degeneration. The boimdar\ of the cell- ha- become 



indi-tinct and fra\ed, and the outer portion of the cviopla-m 



.lined rather deeply \\ith the h.emato\\ lin Fig. ~ . At this 



-tage. the nuclear membrane i- not di-tingui-hable, and but few 



