THE FEEDING HABIT OF TERMITE CASTES. 305 



large mandibles, can chew wood for themselves. So can the 

 second and third forms, during early life. 



A caste which cannot eat wood, or, thinking in terms of the 

 protozoa, a caste which does not harbor protozoa, cannot live 

 by itself. Such individuals are dependent on the wood-eating 

 members of the colony for support; consequently adults of the 

 second form, third form, and soldier castes must be supporu-d 

 by other members of the colony. But the soldiers, in one sense, 

 are not as difficult to support as the second and third l"< >rms, since 

 they < ,m di^f-t for themselves the partially digested woody 

 mati-rial \\hich ha-< passed through the alimentary ranal of the 

 \> loph.i^oii- members of the colony before they rerei\e it; while 

 the M-rond .nid third forms, since they feed exclusi\ely on the 

 !]. must subsist entirely on predi^e-ted loud. 



REFERENCES. 

 Bugnion. E. 



'12 c -ns sur les termites. Differentiation des castes. Comji Knul. 



Mini. Paris. I., 1091-94. 

 '13 La differentiation dcs castes chez les termites. Bull. Soc. Kiiti-m.. l-'i.r 



213-18. 

 Cleveland. L. R. 



( iim-l.ttiun between the Food and Morphology of Termiti-- an. I tin- 



I'li-scncc of Intestinal Protozoa. Amcr. Jour. Hyu . 4, 444 6x. 

 S> ml.i.i-is between Termites and their Intestinal Pmtnzoa. Pro* . N.it. 

 \ ad ^' , 9, 424-28. 



III. I'll' .tl and Symbiotic Relationships ltun-n the Inti--tin.il 



Pi. .(../. ..i . i 1 tniites and their Host, with S|..,:.il Rririnm- i Ketint- 

 lit,' k liar. HIOL. BfLL.. 46, 177-- 



'J5b I In- i : >t. 11 \ation and Oxygenation on the Syml>i..M- l>< -tu.-.-n tin- 



fennlte, / . and its Intestinal Flagell HIOL. HULL. 48, 



309-27- 

 Grassi, B., and Sandias. A. 



'93 .iluppo della societa dei Termitidi Atti Aci-ad. (iii.i-ni.i 



Nat., .u.itiia (ser. 4). 6, Mem. XII. e 7- M-m. I (i.Hy4). Also 

 Issued ly, Catania, 1893. English ti.m-lation in (Juart. Journ. 



M 19, . ^-315 and 40, 1-75- 



Imms, A. D. 



'19 ( in tin- Striutun ami Biology of Archottrmopsis. togt-tlu-r with Descriptions 

 of m-w >|M>i-< uf Int'-stinal Protozoa, anil limeral Observations on tin- 

 1 ptcra. Rdv. Soc. London, 2096, 75-180. 



Jucci, C. 



'20 Sulla differenziazione delia caste nella Societa Termitidi. Rend. R. . \ccad. 

 Naz., Liiui-i. 29, '.8-71 and 95-98- 



