NOTES ON BUTTERFLIES OF ADEN. 207 



effects of the arsenic lie had swallowed, admitted of the very obvious 

 explanation that it teas nothing more than the increased flow of saliva 

 which is the tisKal accompaniment of nausea* no matter how it might 

 have been produced." (Trans. Med. and Phys. Soc, Bombaj^, no. xii, 

 1876, pp. 215, 216). The topical sialogogues, such as I consider 

 Bhui-Champa to be, produce salivation by stimulating the salivary 

 glands reflexly through the nerve-terminations in the tongue and 

 mucous membrane of the mouth. '' The effect produced by topical 

 or reflex sialogogues," Dr. Lauder Brunton observes, "is not the 

 same for each." " Ether and dilute acids produce a thin watery 

 saliva," says he, '' but alkalis cause the secretion of a thicker and more 

 viscid saliva : the former appearing to affect chiefly the chorda 

 tympani, and the latter, the sj^mpathetic.'' In the salivation which w^as 

 produced by Bhui-Champa the flow was "thin and watery." Can it 

 therefore be said that the action of the drug is on the chorda tympani ? 

 Then there is also the effect of the drug on the stomach nerves. It is 

 a subject worthy of investigation for any practical pharmacological 

 experimenter. 



Description of Plate C. 

 Leaves on either side ; between them is the old root, right in the 

 centre with a graduated conical top ' surrounded by numerous 

 fascicles of bulbs with fine white rootlets ; on either side is an open 

 flower. 



THE BUTTERFLIES OF ADEN AND NEIGHBOURHOOD, 

 WITH SOME NOTES ON THEIR HABITS, 



FOOD-PLANTS, &c. 



By Major J. W. Yer^uey, R.A., F.Z.S., F.E.S. 



( Uead before the Bombay Natural History Society on 4th July, 1892.) 



Having picked up the Journal of the Society from time to time 



and seen accounts of the butterflies, &o., of various parts of the 



ladian Empire, but ne'er a word on those of Aden, has induced me 



to look up my notes on the butterflies of that favoured spot, and to 



put these notes into something like shape in response to the Editor's 



appeal for " Copy." Aden, moreover, being an appanage of the 



* The italics are mine.—K, R. K. 



