42 STUDIES ON ACAEI. 



EXPLANATION OF PLATES. 



Note. — The figures on these plates are not drawn on the same scale— for instance, 

 that of D. bovis (PI. I. fig. 6) is more greatly magnified than the others on Plate I. 



Plate I. 



Fig. 1. Bemodex folliculorum, Q. Siimon, ?. Ventral view, x 345. 



„ 2. „ „ Capitulum from above. 



„ 3. „ „ Dorsal view of male showing 



protruded penis. x510. 



„ 4. Demodex canis, hejdig, ?. Ventral view. x515. 



,, 5, „ „ Dorsal view of capitulum. 



„ 6. „ bovis, Stiles, $ . Ventral view. 



Plate IL 



Fig. 7. Demodex bovis. Dorsal view of male showing protruded penis. x,530. 

 „ 8. „ „ Lateral view of male. x52r). 



„ 9. ,, e^'Mt, Eailliet, %. Ventral view. x465. 



„ 10. „ „ Dorsal view of capitulum. 



„ 11. „ „ c? • Dorsal view. 



Plate III. 



Fig. 12. Demodex folliculorum. Elongated larval form from below. x419. 



„ 12 a & b. Appendages of larval form. 



„ 13. Demodex canis var, ovis, Raill. ? . Ventral view, x 665. 



„ 14. „ folliculorum. Elongated nymph, x 439. 



„ 14a&6. „ „ Appendages of nymph. 



„ 15. „ „ Short form of male. X 694. 



„ 15 a. „ - „ Penis greatly enlarged. 



Plate IV. 



Demodex canis var. ovis. Dorsal view of capitulum. 



„ „ „ erinacei, Hirst, $ . Ventral view. X 500. 



„ longior, Hirst, ? . Ventral view. X 600. 



„ „ S • Dorsal view, x 855. 



„ canis var. erinacei, cj . Dorsal view, x 500. 



„ „ „ „ Penis greatly magnified. 



„ „ „ „ Dorsal view of capitulum. 



