792 DOMATIA IX CERTAIN AUSTKALIAN AN'D OTHEK PLAXTt^. 



that they may be these organs. That they are of great antiquity 

 I have no doubt. 



T liave to thank three lady friends for translating Dr. Lund- 

 striim's valuable memoir, and also Messrs, E. Betche, J. •!. 

 Fletcher, and J. P. Hill for very material assistance. 



References. 



(1) LuNDSTROM, Dr. a. N. — Pflanzenbiologische Studien. ii. Die 



Anpassungen der Pflanzen an Thiere. Nova Acta Reg. 

 Soc. Sc. Upsal. vSer. Tert. Vol. xiii., Fasc. ii. (1887), No. 6. 



(2) Lacjerheim, G. de — Einige neue Acarocecidien und Acarodo- 



matien. Berichte der Deutschen Botanischen Gesellschaft. 

 Band X., Heft 10, 1892, p. 615. 



(3) Trimen — Handbook of the Flora of Ceylon. 



(4) Packard, Dr. A. — Forest Insects. Fifth Report of the U.S. 



Ent. Comm. 



EXPLANATION OF PLATE. 



Peiuiaiifia Cunn.ui<jhami (Figs. 1-5). 



Fig. L — Part of leaf showing arrangement of domatia on veins. 

 Fig. 2. — Domatium from under side of leaf ( x 4). 

 Fig. 3. — Hair from interior of domatium ( x 120). 

 Fig. 4. — Outline of section of domatium ( x 20). 

 Fig. 5. — Section of roof of doznatium ( x 120). 



a, cuticle ; h, epidermis ; r, hypodermal layer ; '/, palisade 

 tissue ; e, tannin-sacs ; f, spongy parenchyma ; (j, lower 

 epidermis; h, cuticle. 

 -Hair of domatium, Cojirosma luclda ( x 120). 

 -Pouch-shaped domatium of Dysoxy/um Frascriuinim ( x 10). 

 -Outline of section of domatium, Dyioxylinn. 

 -Outline of section of depression in leaf of Vll'irnniii) Cliiiiinixe 



(X 10). 

 -Tuft of hair in axil, St/iioum (jhindiilomtm ( x iO). 

 -Hair of domatium, Psi/rliotria n/nioxa ( x 120). 

 -Section of leaf, Ranclia Moorei; a and //, tannin-sacs. 

 . — Hair, Vitis Bamliniana (x 120). 



