ACARI 553 



one ; the terminal tootli is strongly curved ; the second one 

 is not in a line with the rest, but points straight outwards, thus 

 giving place to the opposite terminal tooth of the lower jaw 

 when the chela is closed ; behind the seventh tooth there is 

 a deep but narrow incision, behind wliich there is a thin blade, 

 rounded anteriorly, and tapering graduaUy backwards ; sub- 

 marginally, at the base, there is an exceedingly thin, blade- 

 shaped appendage, parallel to the ventral edge ; it is constricted 

 at the base, and bends at a right angle forwards, tapering gra- 

 duaUy ; it is twice as long as it is high, and slightly broader 

 at the base than it is high. Pi lu s dentariusinsertedsubmarg- 

 inally, quite perpendicular and comparativel}^ long, longer 

 than the width of the jaw, where it is inserted (measured to the 

 top of the fourth tooth). 



Pi lu s b a salis lanceolate, finely pointed, inserted submar- 

 ginally, and projecting to the usual incision. 



Hypostoma (fig. 49). The maxillary lobes are wide at 

 the base (width to length as 16 : 27), of even width in the 

 basai third, which points obliquely outwards, thence bending 

 straight forwards and gradually tapering towards the pointed 

 top. The latéral edge is thin, the base is hidden beneath the 

 thin, raised edge of the hypostoma, so that they are articulated 

 submarginally (1). 



On the inner side of the lobes the anterior edge of the hypo- 

 stoma is thickened, and rises to a low, obliquely truncated 

 tubercle. The maxillary plates project a little beyond the 

 lobes, and hâve long fringes. 



Mâle. 



The fdllowing additions are to be made to ]\1ichael's de- 

 scription. 



Ventral side (fig. 54). One pair of small jugular shields. 

 The chitinous arch over the génital aperture projects beyond 



(1) It is evideutly this feature wliicli lias indneed Oudemans to make the stateraeiit : « Tlm 

 oUtcr maie sessile ». As far as I aui aware, tlie lobes are a 1 w a y s articulated to the hypostoma. 



