AMBLYOMMA HEBBJEUM. 109 



it be large, and with the pump going swishes the back of 

 the leaves, i. e., takes the enemy in the rear. It is next 

 to useless to spray the tree from the outside.* 



OKDER ABACHNIDA. 

 DIVISION ACABINA. 



FAM. IXODIM. 

 AMBLTOMMA HEBREUM, Koch. (Fig. 32.) 



AmUyomma hebrceum, Koch, Arachnidensys. iv. p. 63, 

 t. 10, f. 36. 



Cattle Ticks. "Shell Tick." 



Together with the specimens of South African insects 

 forwarded to me by Mr. Bairstow, he also sent samples 

 of Cattle Ticks, known respectively as the " Great 

 Cattle Tick " and the " Shell Tick, which, although very 

 different in appearance, were considered on investigation 

 to be male and female of one species. 



Of these Mr. Janson wrote me as follows : 

 " As regards the Ticks I have two specimens, a small 

 one labelled " Shell Tick, Port Elizabeth,"! attached to 

 a portion of skin, and a large one called the Great 

 Cattle Tick : these I have not the slightest doubt, judging 

 by allied species, are male and female of AmUyomma 

 hebraum (Koch). The male is described and figured in 

 the ' Ubersicht des Arachnidensy stems,' by Koch, but 

 the female, as far as I can find, has not been described." 



"In the male of this species" (that is, in the kind 

 called by Mr. Bairstow the Shell Tick, figured above 

 life size and magnified E. A. 0.) the body is nearly flat 

 and of a short ovate form, the broadest part behind ; it 



* Paper by Prof. MacOwan, above quoted. 



t I have received several of this sex from Bedford, South Africa, but 

 no females. 



