ACARINA FROM THE JUAN FERNANDEZ ISLANDS 



573 



Epimera I— II well chitinized, all probably with 3 pairs of hairs (the 

 exact number of the hairs of epimera II and III I have not been able to see 

 distinctly). 



The legs are very short and weakly chitinized, almost transparent. Tibiae 

 I and IV have a very long tactile hair. The femora are large and flattened 

 (fig. 39). A very remarkable feature is that all the claws are broken off or 

 more likely bitten off, since the animal was in other respects so well preserved 

 that it cannot have been dead when it was collected. 



Figs. 34 — 41. Cerocepheus mirabilis nov. gen. n. sp. 



34. Pseiidostigmatic organ. 35. Top of rostrum with lips of mandibles. 36. Hypostome, dorsal 

 view, 37. Mandibles. 38. Maxillary palp. 39. Leg III, inner view. 40. Top of tarsus II. 



41. Top of tarsus I. 



Loc: Juan Fernandez, Masatierra, Rabanal, c. 3C0 m. s. m., among dry 

 leaves in dense forest, Aug. 1917. 2 specimens. 



Systematic position of Cerocepheus. 



When we try to form an idea about the affinity of the genus Cero- 

 ceplieus we are very forcibly reminded of two facts, one is that the present 

 system of the Oribatei is almost exclusively build up on the basis of our know- 

 ledge of the European forms, the other is that these form only a very small 

 part of the Oribatei of the world and that, although quite a few genera seem 



37 — 29232. The Nat. Hist, oi Juan Fernandez and Easter Isl. Vol. III. 



