130 (Dn. A. e, OUDBMA-NS). LIST OP DUTCH ACARI. 



De Geer's figure shows six white oval spots on the animal's back. 

 It is possible that tlie animal, when alive, carries some of its 

 marginal leaf-like hairs folded back on its back, but as I have 

 not observed the animal alive, this is only a supposition. And 2d. 

 De Geer does not figure marginal hairs, except the six- near the 

 anus and the four which he has indicated by a and hj but this 

 does quite confirm my supposition. The two foremost white oval 

 spots on the back of De Geer's mite are referable to the third or 

 fourth pair of marginal scales of my specimen (see fig. 5) ; the 

 two next to the sixth and the two last to the seventh pair of mar- 

 ginal scales of my specimen. 



Just as De Geer says, the animal's colour is light red, better: 

 orange coloured, with some very light coloured oval figures on 

 the back. These spots exactly correspond to the bases of the four 

 pairs of feet (compare fig. 2 with fig. 7). Possibly these are the 

 six white oval spots on De Geer's figure'? 



Fig. 3 shows the pseudocapitulum of Clieyletus squamosus, 

 exactly copied from fig. 12, tab. 11, Vol 24, of this Journal. It 

 is very imperfectly delineated. 



Fig. 4 is an exact representation of two scales, as they were 

 figured by me on tab. 11, fig. 8 of the same volume, imper- 

 fectly delineated too. 



In order better to observe the minute structure of the mite, I 

 have made it transparent by a maceration in caustic kali and I 

 have coloured it with picrocarmin of Ranvier. The general form 

 has been altered somewhat as may be observed when comparing 

 my fig. 2 and 5. 



Fig. 5. Back view. On the lateral and fore-margins of the pro- 

 soma eight beautiful fan-shaped hairs (scales) are in a row, im- 

 planted with a little stick or handle on a protuberance of the 

 skin. The first and second pair of these scales are longer than 

 broad , and the third and fourth pair are broader than long. The 

 second pair of scales is referable to De Geer's scales maiked 

 with a. 



Behind the four pairs of exact marginal scales we observe a 



