ACARINA FROM THE JUAN FERNANDEZ ISLANDS 



555 



halfway between the median and lateral edge there are two long hairs forming 

 a straight line with the posterior one. 



Hysterosoma with long slender hairs, curved upwards and forwards. 

 They are placed as follows; 4 pairs in the posterior half near the median line, 



Figs. 1—6. Phthiracarus maaclatus n. sp. 



I. Lateral view. 2. Ventral view. ^. Mandible seen from the inner side. 4. Right pseudo- 

 stigmatic organ. 5. Right half of maxilla, ventral view. 6. Tarsus with claw. 



one pair far forwards, also near the median line. Further there is another 

 more lateral longitudinal row of 4 smaller hairs and subventrally two pairs of 

 straight hairs, the tips of which reach the anal plates. 



Ventral side. The legs are of the typical shape, with very large, 

 sharp and strongly arched claws which have in the basal half two sharp teeth 

 the anterior one of which is twice as long as the posterior one (fig. 6). 



