MKMOlUa OF THE NATIUNAI- ACAl^KMY OF SCIENCES. 



307 



and iliiir mitlonlitod ori-jiii from the ci-n-bral gaiijrlia. Iloiice those bodii's ii|ip»'ar to be difteren- 

 tiatioiis olthc c'Ti'lual {taiiplia or KjWs, having no coimectioii cither with the optic or with the 

 aiilciiiial lobes. These bodies have, as stated in my essay, attriwted a good deal of attention 

 from writers on the brains of insects. 



Hi cirrw iilttMitidii tn tin-Ill. His iiioiiinir «.• Iiavi^ iki 



kI Io rclc 



lint : 



stated 



Diijanliii, in IK".ii. 

 Nowton-' 



••|>njar<lin poiiiti-il .iiit tliiit in soiim inwHtN there were to bo Nuen iipini tlic ni(]i<r jiart of tlx; brain tcrtaiu 

 oonvolulcil portioiiN which ht< couiiiareil to the lonvoliitioim of tho inamnialiau brain, and, ina.snincli .ih tliny »cem«<l 

 to be uioro dowlupoa in those insects which are remarkable for their intelligence, such as auts, bees, wasps, etc., he 



Fio. IX.— Diaiovninialic oiitluica of aectionsuf tlir uppi-r part i.r thr Ijraiii ( 



Th.; uumlKTi) iuiliiat.. Ihf [HMUion lu tli.r K.Ti.-8 of :m «c<liou» iui.i which Ihi.-. braii, waa .ul. J/6, mu 

 covcriug: e. aiiil their stomii l.f); o. anterior uon-ons miuta. m. luwlian i!brvona ma8«.-Aftcr Newton. 



seem'ed to think the intelligence of insects stood in direct relationship to the development of these bo.li.-s. The 

 lorn, of thes.. stn.eture.s is described by the same author as being, when fully developed, as in the bee. like a pair 

 i.r disks upon each side, each disk being folded together and bent downward before and behind, its border being 

 tlii.keued and the inner portion radiated. By very carefnl dissection he found these bodies to be connected on each 

 side with a short jiedicle, which bifurcates below to end in two tul)ercles. One of those tubercles is directed 

 towar.l tlip middle line, and approaches but does not touch the corresponding process of the opposite side. The 

 directed forward, and is in close relation to the front wallof the head, being only covered Uy tho 



second tube 



• On tlie Brain of the Cockroach. 

 341, 342. 



By E. T. Newton, (^iiart. .lourii. Microscopical Science, July, 1879, H, pp. 



