142 SEVENTEENTH Report STATE ENntTomoLocist oF MinnEesota—1918 
PLATE X 
Microtrombidium albovittatum. 
Ai—Dorsal surface of female. x20 
Bi—Palpus, inner surface. x60 
C,;—Segment IV of palpus, outer surface. x60 
D,—Tarsus:- I. x80! 
E,—Bye. 
Microtrombidium muscarum. (?) 
Ao—Dorsal surface of partly engorged larva. x66 
Bo—Ventral surface of partly engorged larva. x66 
Co—Mouth .parts of larva. x333 
Do—Segment IV of larval palpus. x666 
Ee—Process from mandibular sheath, x1000 
Fo—Tarsus III of larva. x200 
