200 A. e. OUDEMANS, NOTES ON ACARI. 



rower ; horns with slightly convex outer edge and concave 

 inner edge, therefore apparently curve (like in the foregoing 

 species) ; posterior excavation larger than long, with median 

 rounded piece in its top (not hyaline ?) ; horns internally with 

 hyaline membrane and at their top with a smaller one which 

 shows one rounded internal lobe aod two triangular distal 

 dentitions. Anterior dorsal shield as wide as the 

 body, thus extending behind legs II, being even wider here than 

 the body at tbe level of legs II. Epi m era I free. Anal 

 suckers lying with their centres on a line which goes 

 through the top of the excavation. 



Female. Shape: gradually becoming narrower behind 

 legs III ; gradually becoming wider behind legs IV ; posteri- 

 orly with oblique angles, deep median triangular excavation 

 and median rounded piece. Anterior dorsal shield 

 extending only a little behind legs II, posteriorly with acco- 

 lade-shaped edge. Posterior dorsal shield anteriorly 

 narrowest, gradually becoming wider backward. Lateral 

 shields much larger than in the mule, reaching trochanteres 

 IV. Epigynium crescent-shaped (^.circiue praevulvari vix 

 arquato«) ; vulvar lips chitinized making a A. 



The species inhabits according Berlese : Totaiius calidris, 

 Machetes pugncm, Tringa alpina, Triiiga mbiuta, Limosa inela- 

 nnra; but I think Berlese has taken this enumeration of hosts 

 from Canestrini and Troussart, not from own examination. 



It is piobable that this species inhabits so various birds ; 

 on which bird Berlese actually has collected it, I cannot say 

 with certainty. 



3. Avenzoaria gambettae (Oudms). 



(With Plate 9, fig. 1—7;. 



1904, Sept., 1. Pterolichus gambettae nov. sp. Oudenians in 

 Entomologische Berichten, n°. 19, p. 171. 



