230 JOURNAL, BOMBAY NATURAL HISTORY SOCIETY, 1891. 



the * stockings ' may be rufous in some individuals of either Bos 

 gaurus or Bos sondaicus (I have seen them deep yellow in a bull 

 Bos frontalis)* The insides of the legs are not unfrequently of a 

 golden-brown and may occasionally be chestnut. It seems hardly 

 probable that an additional species besides Bos gaurus and Bos sondai- 

 cus remains to be discovered in the Malay Peninsula. 



* Since the above was written, 1 have seen the bull Gayal in the Society's 

 Gardens, with a distinctly ferruginous tinge on parts of his white ' stockings.' I 

 can well believe that all the lower parts of each leg may be stained red in some 

 animals. The coloration is due, Mr. Bartlet tells me, to an exudation, that becomes 

 much more copious in hot weather. 



AGRICULTURAL ENTOMOLOGY. 



(Being a Lecture delivered by E. C. Cotes before the Agri* 

 Horticultural Society, Calcutta, on Idth March, 1891.) 



Five years ago it would have been a simple matter to give a lecture 

 <on the agricultural entomology of India, for at that time so little 

 kad been ascertained about either the insects which injure crops to 

 any serious extent, in this part of the world, or about those which 

 are useful to man, that a short account of what was known of the 

 whole of them might have been included in a single lecture. Now. 

 however, the case is very different ; for, owing to the system of 

 collecting information which has been pursued of late, such a large 

 amount of material has accumulated, that the only difficulty has 

 been to pick out what should be sufficient to give some slight idea of 

 the subject, and yet be such as could be gone through within the 

 hour. 



Magic lantern illustrations seemed likely to make it easier to 

 explain about the insects, so it was decided, in the first place, only to 

 tell you about those of which I have lantern slides. This restriction, 

 however, still left a very much larger field than could possibly be 

 dealt with, so it was further decided only to touch upon such of the 

 insects as had been injurious to crops during the past year, and to 

 leave out all mention of the silkworms and other useful insects 



