60 A. f. OüDKMANS, NOTES ON ACARI. 



chelate; maxillae with two-jointed palpi; legs ruther equal 

 in size, long, very thick, 5-jointecl ; ambilacra sessile, without 

 claw ; caruncles enormous, flat, membranaceous, with radiatine- 

 spikes. No hypopi. Living on birds. 



XV Laminocoptinae. 



Acarinae with flattish rather elongate body ; soft skin wrinkled ; 

 dorsum unwrinkled (shield!); no vertical hairs; mandibles 

 chelate ; maxillae 2-jointed ; legs very short, 5-jointed ; legs 

 I and 11 without ambulacrum; legs III and IV with minute 

 caruncle on longjpeduncles. No hypopi. Living subcutaneous 

 on birds. 



XVI Linobiinae. 



Acaridae with rather flat almost circular, or oval, or even 

 elongate body ; skin soft, without wrinkles (?) ; with two anterior 

 dorsal shields ; no vertical hairs ; mandibles serrate ; maxillae 

 with 2-joiuted palpi; legs short, almost equal in size; tarsi 

 ending claw-like; ambulacral caruncle on short peduncle, 

 small, round, flat. No hypopi. Living under elytra of beetles. 



XVII Cytodytinae 



Acaridae with rather globular, or oval body; soft skin 

 finely wrinkled; dorsum unwrinkled (shield!); no vertical 

 hairs; mandibles and maxillae inclusive palpi form together 

 a sucking apparatus; legs almost of half body-width, 5-jointed, 

 equal in size; ambulacral sucker minute, on long peduncle. 

 No hypopi. Living subcutaneous on birds. 



XVIII Hemisarcocoptinae. 



Acaridae with short and oval body; skin soft, smooth and 



