14 (du. a. C. OtJDEMANS). NEW LIST OF DUTCH ACAEI, II. 



7. Liponyssus Klti. 

 See about this generic naine my Notes on Acari , Illd Series , 

 Tijdschr. d. Ned. Dierk. Vereen, ser. 2, v. 7 p. 63. 



1. Liponyssus saurarum Oudms., nov. sp. 



See about this species my Notes on Acari , Hid Series, Tijdschr. 

 d. Ned. Dierk. Vereen., ser. 2, v. 7, p. 66. 



9. Liponyssus albatus (G. L. Koch). 

 (With Plate '1, fig. 4—8). 



Berlese has not given a drawing and a description of the male, 

 because this was unknown to him. (Ac. Myr. Scorp. Ital. 53, n''. 6). 



Colour and size ot' the wale equal to those of the female. 



The dorsal shield (Fig. 4) resembles that of the female. The 

 hairs too on this sliield and on the soft parts of the dorsum have 

 the same distribution. The marginal hairs however are two times 

 as strong as in the female. 



The genital aperture is on the usual place (Fig. 5). 



The sternal, genital, ventral and anal shields have coalesced. 

 The part representing the ventral and anal shields is nearly heart- 

 shaped or ti'iangular, with its top turned backward 



The coxae of the 2d and 4th pair of legs bear a spine turned 

 backward, and the coxa of the 3d pair of legs two such spines 

 (Fig. 5). 



The 4th pair of legs (Fig. 6) bears on its femur two, ad on its 

 genu, tibia and tarsus each one strong spine. 



The movable finger of the mandibles (Fig. 7) bears a transparent 

 membrane. 



Berlese's figure of the ventral side of the fma/^ is not correct — 

 or Italian specimens differ from those of Holland 



The sternal shield (Fig. 8) bears sia: liairs in stead of four. 



Between the sternal and the anal shields all my females show 

 a third shield, not mentioned by Berlese. I consider this shield, 

 like in Dermani/ssiis gallinae (de Geer) , as a very genital shield. 



