margins developed into thin overlapping plates, especially in the 

 males, the ventral plates being sometimes obsolete in gravid females. 

 Pores on margin of cephalothorax distinct. Anal piece unique. 

 Maxillary lobe of palpi with two tubercles.— Clarence M. Weed. 



The Cattle Tick.— The Journal of Com. Medicine and Veterinary 

 Archives for July, 1891, and January, '92, contains two articles by Dr. 

 Cooper Curtice upon this insect (Boophilus bovis). The first contains 

 an account of the life history ; while the last presents the habits of the 

 species. Dr. Curtice refers this species to the genus Boophilus (ox 

 loving), "in w! •> -hurt; the rapitulum 



wider than the combined width of the palpi and rostrum ; the second 

 and third segments of the palpi nearly equal and each widest about the 

 middle where the sides project in an angle ; eyes present." This 

 species has been formerly referred to the genus Ixodes. 



Dr. Curtice recommends kerosene emulsion for destroying the cattle 

 ticks, especially when the cattle are shipped north, because of the 

 supposed relation which the ticks bear to Texas fever. I wish here to 

 call attention to a remedy for this pest, with a few additional facts as 

 to the ticks being the means by which the germs of Texas Fever are 

 disseminated. 



In regard to remedy there is but one objection to kerosene emulsion 

 and this is that in order to keep the cattle free from the ticks the 

 emulsion would have to be applied almost daily. This is especially 

 true where the cattle are pastured in herds where they may be supplied 

 with a fresh lot of ticks every day. A far better remedy consists 

 in feeding the cattle equal parts of sulphur and salt. This should not 

 be given occasionally, but kept where the cattle may have free access 

 to it at any time. That this remedy will keep the cattle free if only 

 given occasionally is not claimed, nor is it true. But it it very 

 never, if the sulphur and salt be kept where the cattle may 

 have free access to it. It is probable that the sulphur acts as a repel- 

 lent owing to the fact that it is very largely eliminated from the body 

 through the skin. It is hence used in the treatment of many skin 

 diseases. This matter of a proper remedy is of vast importance 

 throughout the South where the cattle have some portions of the body 

 constantly covered with the ticks throughout the summer and autumn 

 months. The decrease of flesh and milk consequent from the attack of 

 the ticks must be considerable. 



That ticks are the means of disseminating the germs of Texas fever 

 is a much disputed point. There seems to be some doubt, also, as to 



