218 A. e. OUDEMANS, NOTES ON ACARI. 



two times longer than wide, with parallel sides, posteriorly 

 rounded, flanked by two pieces of un wrinkled skin. Poster- 

 ior dor sa] shield: two small oval pieces aside the 

 median incision, united by a triangular less chitinized yet 

 unwrinkled piece of skin. Hairs: longer than the anterior 

 dorsal shield : a pair aside of the posterior end of the shield, 

 and a second pair in the posterior shields. Minute hairs : 

 from the anterior shield to the nephridial opening two some- 

 what waved rows of 4 each ; near the shoulders a pair ; and 

 behind the nephridial opening one pair. 



Ventral side (Pig. 21).Epimera I close together, 

 but free ; epimera II crooked extending far more backward ; 

 epiraera III very small, as long as trochanteres III. Epimera 

 IV as long as epimera III. Shields: outside of epimera I 

 and II and on both sides of epimera III a narrow coxal jilate. 

 Hairs: between ejîimera I and IIa pair of minute hairs ; 

 in the outer part of the coxal plate III the twu lateral hairs 

 both short and thin. 



Mandibles normal. 



Maxillae normal. 



Legs shorter than the average breadth of the body. 



Protonympha (Fig. 22). Length from 264-296 ,«. 

 Colour in the weak parts pale, in the hard parts brown. 

 Shape almost kite-shaped, yet less than the larva, for the 

 shoulders are much more rounded, swollen, and before these 

 swollen parts there is a shallow incision ; posteriorly rounded 

 with shallow median excavation. Texture in tlie weak 

 parts finely wrinkled ; in the hard parts smooth. 



Dorsal side (Fig. 22). Anterior dorsal shield 

 in its fore-half a square, in its hind-half almost circular. 

 Posterior dorsal shield divided in two triangular 

 shields aside of the median excavation and incliningr to each 

 other. Hairs as long as the anterior shield : a pair flanking 

 the posterior end of the anterior shield and two pairs ^n the 



