136 THOMPSON YATES AND JOHNSTON LABORATORIES REPORT 
EXPLANATION OF PLATE I. 
Fig. i.- Egg First day. x circa 40. 
Fig. 2. — Egg at about the eighth day, showing the split cuticle, the sub-lying larva, and the " anew 
shaped ' sub-cutaneous patch of secretion (ventral). X circa 40. 
Fig. 3. — Egg at about the tenth day, with the posterior portion of cuticle broken away (dorsal). 
X circa 40. 
Fig 3a.- A similar example seen in profile. X circa 40. 
Hig. 4 —Larva removed from the egg (ventral). X circa 40. 
Kig. 5. — iarsus ot the larva. X 250. 
Fig. 6. — Marginal fringe of the larva (a) and nymph (b) at the period of ecdysis. x 250. 
Hig 7- — Dermal markings of the larva. X 250. 
Fig. 8. — Nymph (as seen in optical section after maceration in potash). X 25. 
Fig. 9.— Leg i of the nymph. X 50. 
F'lg ya. — Leg iv of the nymph, x 50 
Fig. 10. — Posterior margin of nymph, showing character of large derm cells (stained preparation), x 250 
EXPLANATION OF PLATE II. 
Fig. 1.— Capitulum of larva x 250. 
Fig. 2.— Capitulum oi nymph. X 250. 
Fig. 3 —Capitulum of adult female. X 75. 
Figs. 4. 4a. — Mandibles ot adult female, a-p. inner bitentate apophyses. X 250. 
Fig. 5. — Derm cell- of adult female (stained preparation). X 200. 
Fig. 5a. — Unstained preparation of same. X 200. 
Fig. 6.— Stigmen of adult female, with its finely pitted peritreme. X 200. 
.Fig". 7. — Secretion glands of adult female. X 250. 
Figs. 8, 8a, 8b, and 8c. — Leg i, ii, iii, and iv of adult female respectively. X circa 25. 
