120 (dr. a. c. oudemaîîs) 



differences, I consider the two Acari bought from Mi'. André and 

 my specimens of Haarlem really to be Scutovertex ooalis (Berl ) 

 I doubt of the existence of the diagonal folds in this species and 

 suppose, that the animal, delineated by Prof. Berlese, has got 

 these strange wrinkles as it was just hatched from its last ecdysis, 

 when it was thrown in spirits. Michael too considers Scutovertex 

 ovalis (Berl.) as a doubtful species (Das Tierreich , Oribatidae). For 

 this reason I think it useful to present to my readers new figures 

 of this species (fig. 24 — 31). 



Length from 0,540 — 0,620 mm. Breadth 0,360 mm. 



Fig. 24 shows the animal's dorsal face. The prolonged anterior 

 portion of the abdomen gradually passes into the céphalothorax. 

 The nearly quadrangular spot on it is yellow. Before this spot 

 the prolongation of the abdomen still sends a little chitinous bar 

 into the skin of the céphalothorax. This median bar is delineated 

 by Prof. Berlese in his Eremaem ovalis \dx. slculus (fase. 35, n°, 8). 



The abdomen is convex , rough , marked with numerous irregular 

 granules (fig. 27) , even on the radially striated peripheral band 

 (fig. 24 and 26). The dorsum shows 4 longitudinal rows of 4 

 hairs each. These hairs also stand in transversal (segmental) rows 

 (fig. 24). Four hairs on hindmargin of abdomen. 



Fig. 25 shows the ventral surface. My figure, exactly delineated 

 with camera lucida , differs somewhat from that of Berlese. The 

 whole ventral surface is marked witli the same spots or granules, 

 as the dorsal one. The genital covers bear one hair each, the 

 anal covers two hairs each. The ventral plate shows wrikles and 

 seams to be leathery. 



Fig. 26 is a side-view, which demonstrates the pei'ipheral band 

 to be convex with the arched central portion of the abdomen , not 

 flat, as in Scutovertex maculatus Mich. 



Fig. 28 is a side-view of the lamella with the lamellar hair and 

 a very small lamellar cusp. 



Fig. 29 is a side-view of the first leg ; the tibia is provided 

 with the singular prolongation, delineated also by Prof. Berlese. 



Fig. 30 is a drawing of one of the hairs of the abdomen , and 



