280 Annual Report for 1906 of the Zoologist. 
Fig. 13. — Rostrum of Derma- Fig. 14. — Rostrum of Ixodes Fig. 15. — Rostrum of Hyalomma FIG 16. — Rostrum of Ambly- 
centor electus, from above. ricinus , from below. cegyptium, from below. omma hebrceum, from below. 
