22 (dr. a. c. oudbmans). new list of dutch acari, II. 



the median line. The body is elongate, twice as long as broad, 

 well shouldered, and bears on its dorsal side about eight longitudinal 

 rows of stifl', sharply pointed hairs. Epistema rounded. 



19. Hypoaspis krameri G. et R. Can. 



Berlese suggests (Ordo Mesostigmata , p. 42) that Hijpoaspis 

 Jcrameri $ should belong to his Hypoaspis campestns. 



It is true that the configuration of body and hairs, and position 

 of the latter would justify such an opinion. 



I am, however, in the opportunity to rectify this supposition 

 and to throw more l;ght upon the interesting subject, 



I have found on Ori/ctes nasicornls L. deutonymphae, females 

 and males of H. krameri G. et R. Can. 



It is quite unnecessary to publicate figures of these animals. 

 Seen from above they resemble exactly the figures, given by Berlese 

 of his Bypoaspis campestns (Ac. Myr. Scorp. Ital. 40, 7 fig. 1 and 

 3). except tJtat they lach the lateral incision of the dorsal shield/ 



Seen from the ventral side they resemble exactly the figures 

 given by Berlese of Hypoaspis campestris (ibidem fig. 2 and 4) 

 except that the peritrema is long and runs till near the rostrum. 



Further the deutonymphae differ from those of//, campestris Beri., 

 by having only tivo long hairs on the posterior margin , in stead 

 of 6 or 8 ones. 



Of course the mandibels of the female miss the crooked styliform 

 appendage of the males. 



20. Hypoaspis celeripediformis Oudms., nov. sp. 

 (With Plate 20, fig. 29 and 30). 



Length 725; breadth 470 /«. 



There is no better name for this species than Laelaps celeripe- 

 diformis , for indeed , if I had caught it on a bat , I should at first 

 have believed it to be a Celeripes (^Spinturnix). 



