Legs 1 and 2 without strong 



opines H. crassipes (Uallei-). 



(Die. A. C. OUDKMANS). NüTliS ON ACA.11I YI. 11 



J 3. Key to the species of Hypopus Uuj. 



As Hypopus minittus proves to l)e the nyinpha ol' N auaaariu 

 iiduiilus Oudms. (vide above p. 8), I present here an emendated 

 key to the species of Hi/popas. My previous key , printed in the 

 Tijdschr. (I. Ned. Bierh. Vereen. , ser. 2 , vol. 7 , p. 86, herewitli 

 is annuled. 



j Legs 1 ; 

 1. \ spines 



' Legs 1 and 2 with strong spines 2 

 Heterom. $ with 2 little spines 



on tarsi H. trouessarti (Beri.) 



Ì Heterom. cT with strong spines 



f on all the joints of the legs H. spinitarsilS (IJerni.) 



14. Nanacarus minutus (Oudms.). 

 (With Plate 2, tig. 23—28.). 



NijMph. See Tijdschrift der Nederlaudsche DierJcimdiye Vereenlfjiuij^ 

 ser. 2, v. 7, p. 85, tab. Ill fig. 55, 56. 



Female. Length 246 /<. with head, 221 /t. without head. Shape 

 Acarus- or Hijpopas-Wke. — Colour white or pale. Fig. 23 shows 

 us the dorsal aspect of the animal. The head is triangulai', the 

 thorax nearly trapezoidal, with straight fi'ont and base, and with 

 sides which are three times sinuated outward. There are two vertical 

 hairs and two pairs on the hinder part of the thorax, of which 

 the inner pair is small, and the outer pair almost as long as the 

 length of the thorax. This outer pair is directed outward and a 

 little forward. The abdomen is twice longer than the thorax, has 

 parallel sides and a perfectly rounded posterior margin. It bears 

 four rows of rather small hairs: two marginal I'ows of foui' hairs 

 each, and two dorsal rows of four hairs each. The skin is smooth. 

 One of the females contained an egg, the outlines of which I have 

 drawn by a doited line. — Fig. 24 represents the ventral side ol 

 the ci'eature. The distance between legs 2 and 3 and between 

 legs 3 and 4 is rather large, so that tlie 4th pair of legs is inserted 



