374 Mr. F. W. Edwards on the 
Aédes geniculatus (Olivier). 
Dorsal view of head of first-stage larva, to show position and form of 
ege-burster: from a living specimen. X about 60. (The shading is 
intended to represent fine ridges in the chitin, which occur over the 
greater part of the head.) 
Fig. 2a. 
Fig. 2. 
Fig. 2.—Aédes argenteus (Peiret) [Stegomyia fasciata auct.]. Ege- 
burster, seen from posterior end of head, showing thickness of disc 
and strong central peg. X about 100. 
Fig. 2 a.—The same, half side view. From cast skins; diagrammatic. 
Fig. 3. 
Theobaldia annulata (Schrank). 
Sectional view (transverse) through egg-burster, showing attachment of 
muscles. X about 120. From a balsam mount in the British 
Museum, prepared by Mr. W. D. Lang. 
