Oudemans, Notes on Äcari. 399 



similar canal, and of the presence of a minute 

 appendiculum on the same place in Tr. roste rii 

 (B erlese). (See now below sub Tr. rosterii.). Before the canal 

 the posterior shield (not the body) is deeply incised in the same 

 way but much narrower, as the body between the two tail-pieces, 

 i. e. rounded at the bottom of the incision , slightly constricted 

 in the middle. The edges of the shield along this incision are 

 well chitinized and brown. The shield is polished, yet provided 

 with numerous pore-shaped punctations , and in a high triangle 

 before the posterior incision of the shield with regularly arranged 

 less chitinized round or oval depressions or pits , which give to 

 the creature a beautiful appearance. — There are two pairs of 

 lateral shields , an anterior pair before the transverse linear de- 

 pression , which devides the body into a falsely called cephalo- 

 thorax and abdomen, and a posterior one behind it. The anterior 

 lateral shield anteriorly narrower ; the posterior one anteriorly 

 with a rather thick hair (directed inward). 



Ventral side (fig. 21). Here the anterior lateral 

 shield is also visible , anteriorly narrower , posteriorly with a 

 nmcro or slip inward. Gurions is the ventral part of the 

 posterior lateral shield. It has so deep an incision at 

 the innerside that it apparently is divided in two parts, a rounded 

 anterior one and a triangulär posterior one. This latter bears 

 a hair as long as three quarter of the creature's greatest width. 

 Moreover it has fused with a shield shaped epimeron III , or a 

 shield shaped portion of the coxal plate III, on which we observe 

 a similar spur or thorn as on the trochanter of the leg III 

 (fig. 21 to the left). — Epimera I wide , not touching each 

 other, anteriorly with a branch directed towards the throat and 

 an other longer one directed outward to the Shoulder of legs I. 

 Epimera II as long as I , a little curved , having a branch 

 running forward towards the Shoulders I and outward towards 

 the Shoulder II and touching here the anterior corner of the anterior 

 lateral shield. Epimera III already mentioned, bear the well 

 known spine behind the long side-hair, shield shaped, and m s t 

 probably being a real (coxal) shield, as it is pro- 

 vided with a spur perfectlyresembling that of the 

 trochanter of leg III. — E p i m e r a IV long, more or less 

 S- shaped, with a pin inward halfway. We could call e p i m e r a V 

 an epimeron-like pair of chitinous objects limiting posteriorly the 

 coxal plate IV. — The anterior border of the transversal genital 

 aperture provided with a chitinous semicircular bar, resting 

 Avith its ends on two small transverse bars. Anal aperture 

 longitudinal, quite before a chitinized marking resembling 



