PLATE LXXXV 



Figure 1. 



Figure 2. 



Figure 3. 



Figure 4. 



Figure 5. 



Figure 6. 



Figure 7. 



Figure 8. 



Figure 9. 



b.c. 



br. 



cap. 



cl.sp. 



d. 



d.b.c. 



d.ph. 

 g.a. 

 hy. 

 rnd. 



Longitudinal section through the capitulum of Mar- 

 garopus annulatus, ? , showing the buccal cavity 

 with its bayed-out posterior end, into which the sali- 

 vary ducts open, x 122. 



Transverse section through the rostrum of Afionom- 

 ma gervaisi, 9 , about the level of the middle of the 

 second palpal segment the palps are not shown 

 displaying the buccal cavity which is here open at the 

 sides, x 240. 



Transverse section through the rostrun of same, about 

 the level of the first palpal segment ; the buccal cavity 

 is here closed in at the sides as explained on page 660. 

 The section passes through the buccal cavity just 

 anterior to the openings of the salivary glands. X 233. 

 Transverse section through the basis capituli of same 

 just in front of the porose areas. Note the openings of 

 the salivary ducts and the two portions of the buccal 

 cavity. X 150. 



Transverse section through the posterior portion of 

 basis capituli of same showing the pharynx. X 150. 

 Hypostome of Amblyomma testudinarum, 't , highly 

 magnified. 



Hypostome of Ornithodorus savignyi, ? , highly 

 magnified. Compare the poorly developed' teeth with 

 those on the hypostome of Amblyomma testudinarum. 

 Mandible of Amblyomma testudinarum, ? , showing 

 the digits, highly magnified. 

 Mandible of Ornithodorus savignyi, ? . 



Reference Letters 



Buccal cavity. 



Brain. 



Capitulum. 



Cellular space. 



Diverticulum. 



Dorsal buccal 



cavity. 



Dilators of pharynx. 



Genital aperture. 



Hypostome. 



Mandible. 



mi. 

 oe. 

 o.s.d. 



ph. 

 r.md. 



sd. 

 sh. 

 v.b.c. 



Mid-intestine. 

 Oesophagus. 

 Opening of salivary 

 duct. 

 Pharynx. 



Retractors of man- 

 dible. 



Salivary duct. 

 Sheath of mandible. 

 Ventral buccal 

 cavity. 



