2 ARKIV FÖR ZOOLOGI. BAND 3. N:0 28. 



mirmecof ili ^ is able to record in all, nine species, of wliich six 

 are known to be myrmecophilous, one is found on Scolopendra, 

 one on Scarites and one is found free-living. 



The species are divided in four genera, viz. Antenno- 

 jthorus Haller, EcMnomegistus Berl., Phyzalozercon Berl. 

 and Parayitenmdus Berl. of wliich the genus Echino7negistus 

 is divided in two subgenera, Ecliinomegistus s. str. and 

 Antennomegistus. 



Our knoAviedge of the f amily must however still be consid- 

 ered to be comparatively small, as only of three species viz. 

 Antennophorus grandis Berl. A. pubescens Wasm. and Antenno- 

 tnegistus caputcarabi Berl. both sexes are known and nothing 

 wathever is known about the larvse or the nymphse. 



Such being the case, I venture to claim some attention for 

 the two new genera, which form the subject of the present 

 paper, as I have been able to discover both sexes of them and 

 have found immature forms, which with almost to certainty 

 amounting probability are the deuto- resp. tritonympha of 

 one of them. 



The acari were found in Natal and Zululand 1905 on 

 Julidoe belonging to the genus Spirostreptus, generally males 

 and ' females on the same animal and not unfrequently even 

 both species together. 



Neomegistiis julidicola Tgdh 1906. 



Neomegistus julidicola nov. gen. nov. sp. Trägårdh. Neue Acariden 

 aus Natal und Zululand in Zoologischer Anzeiger. Bd. XXX. No. 26. p. 872. 



Male: Average length. 1,75 mm., greatest width 2 mm. 

 Female (with 12 — 14 eggs) Average length 1,8 mm., greatest 

 width 2,2 mm. 



Male (Fig. 1, Pl. I). 



Colour deep chestnut brown. Texture, smooth, polished. 

 The jorm of the body is very broad, pyriform, the greatest 

 width, exceeding the length, is to be found on alevel with coxse 

 IV. Posteriorly well rounded almost semicircular, anteriorly 

 triangulär with blunt, rounded top. 



Redia. Vol. I. Fasc. II. p. 386—400. 



