132 



Terminology 



Fig. 138, illustrating the tarsi of 10 species of Ixodidae to show different forms of Tarsus 

 4. (Original, G. H. F. N. del.) 



The transverse line indicates the pseudo-articulation. 



Tarsus 1. Tapering gradually as in I. ricinw. 



2. ,, „ „ I- signatus. 



3. ,, obliquely „ I. ornitlwrhynchi. 



4. Humped prior to tapering as in I. liexagonw. 



5. Tapering abruptly as in I. cordifer. 



6. . to one Bpur as in Haemaphysalis cornigera. 



7. Ending bluntly with two spurs as in Bhipiceplialw masseyi. 



8. Tapering to a long spur as in Margaropus winthemi. 



9. ,, abruptly and bearing two spurs as in Amblyomma cooperi. 



