Cakpentek & Hewitt — Genitalia and Larva of the Warhle-flij. 287 



EXPLANATION OF PLATES. 



PLATE XXI. Eypoderma bovis. 

 Fig. 



1. The Female Eeproductive Organs, x 10. The general view is lateral, but 



the right ovary has been displaced ventral wards, ov. 1., left ovary ; ov. r., 

 right ovary ; od., paired oviducts ; od'., common oviduct ; va., vagina ; 

 op., tip of ovipositor ; sp., spermathecae ; a.g., accessory glands ; in., 

 intestine; r., rectum; r.g., rectal glands. The ovaries and paired oviducts 

 contain many ripe eggs. 



2. Ovarioles and secondary ovarian tubes uniting to form one of the five or six 



main divisions of an ovary, x 10. 



3. Terminal region of abdomen of Male, as seen from behind, x 25. The 



hinder abdominal (genital) segments (vi, ix, x), are retracted within the 

 large fifth segment (v). The reference figures indicate the terga and (for 

 the fifth and sixth) the sterna of the segments, the intervening cuticle being 

 membranous. The hairy clothing of the segments is not shown. 



PLATE XXII. Hypodernui bovis. Female. 



Fig. 



4. The central spermatheea (sp.) with the proximal part of its duct; the distal 



region of all thi-ee spermathecal ducts (d), and of the right accessory gland 

 (a.g.) with its duct (d'), the termination of the left accessory duct being 

 also shown. Dorsal view, x 62. 

 4a. Chitinous coat of spermatheea with hooks. ■« 800. 



5. Terminal abdominal segments (numbered v-ix) which form the Ovipositor. 



Dorsal view, x 10. 



6. The same. Ventral view, x 10. 



7. The same, with the hinder segments partly telescoped, and an egg passing 



out. Lateral view, x 30. 



8. Tip of ovipositor. Lateral view, x 84. 



9. A sternum of the ninth segment, with its process. Oblique ventral view, x 84. 



10. Tip of ovipositor. Dorsal view, x 84. 



11. The same. Ventral view, x 84. 



In figures 8, 10, and 11, the terga (T.), sterna (St.), and paired processes 

 (P) of the various segments are numbered (8, 9, and 10). 



12. Spines of the intersegmental membrane in front of the eighth sterna, x 225. 



