(dr. a. c. oitdemans). notes on acari vi. 13 



On the 1st of November 1901 these my Notes VI Series were 

 written and the species described as Glycypliagus bomhormn. 



In Januari 1902 I received from my friend Mr. Michael of 

 London a copy of his British Tyroglyphidae, vol. I, in which 2 

 rudimentary hypopi of Glycyphagns are described and delineated. 

 These hypopi having rounded edges too, I was strenghtened in my 

 opinion, and shortly described my new finding in the (Dutch) 

 Bntormlogische BericJtteìì, p. 20. (1 March 1902), again under the 

 name of (Uijcijpliagus homhormn. 



But a fortnight ago I received a bottle with many thousands of 

 hypopi of a very Glycijphagus which I will describe afteiwards. 

 (Notes, XI or XII) ; all were sharpedged. And therefore I don't 

 believe that my creature is a hypopus of a species oi Glyci/phagus, 

 but I consider it as one of a species of an unknown genus, which 

 I will call Cerophagus (wax-eater). 



Iß. Key fo the genera of Tyroglyphinae. 



lli/2)opl. 



I Abdomen without sharp edges . 2 

 I Abdomen with sharp edges ; the 



lateral margins can be suftlexed 



ventrally 6 



(Ventral side without any trace of 

 suckers or claspers: degenerated 

 Ì hypopi oîGlyci/phagus^nQ\ev free. 

 Ventral side with suckers or clas- 

 pers; animals free living . . 3 

 L Behind the anus a sucker-plate . 4 

 ' Behind the anus two claspers . 5 

 [ All the legs equal in armature 



and in hairs of tarsi .... Cerophagus Oudms. 

 ' Legs 4 quite otherwise . . . Trichotarsus Can. 

 l'Under the claspers no sucker . Labidophorus Kram. 

 1 Under each clasper a peduncu- 

 lated sucker Dermacarus Haller. 



