30 A. D. MICHAEL ON THE ACAUINA. 



/. Tarsus. 

 g. Tarsal sucker. 

 h. Copulative suckers 

 i. Penis. 



j. Leaf-like terminal expansions to abdomen of male. 

 k. Sternite (reproductive female). 

 I. "Vulva. 

 m. Egg. 

 n. Anus. 



o. Papillae found in nubile female, but not in nymph. 

 Fig. 4. Myobia musculi (X 170) after Claparede. Male, dorsal aspect. 



a. Anterior (scansorial) leg and claw. 



b. Mandibles (needle-shaped). 



c. Penis. 



d. Dorsal elevation and opening where the penis emerges. 



e. Anal projection. 



Figs. 5 & 6. Glyciphagus spinipes. Tubular posterior projection of adult 

 female, highly magnified (drawn from nature). 

 Fig. 5. Dorsal aspect. 

 6. Ventral aspect. 



a. Edge of abdomen. 



b. Central bulb attached to interior dorsal surface of tube. 



c. Flap projecting from ventral surface. 

 The opening of the tube is between b and c. 



Fig. 7. Er emeus oblongus, oviduct of female extended, highly magnified 

 (drawn from nature). 



a. One of the folding doors which closes the genital opening. 



b. Cusps, probably for guiding the egg during deposition. 



The ridge and furrow arrangement should be much finer. If drawn 

 on the scale of nature a much larger drawing "would have been 

 required to show it. 



