ACARINA FROM THE JUAN FERNANDEZ ISLANDS 585 
established, although I have deferred this as there is every reason to believe 
that many new species of this and related genera will be discovered in the 
tropics. 
Length 1100 ». Length of hysterosoma 884 uw. 
Width 580 ».. Width of propodosoma 365 uy. 
Colour yellowish, with brown patches, legs dark brown. 
Texture very finely punctured except at the sides where the cuticle is 
reticulated. 
Propodosoma (fig. 60) long and narrow, with long rostrum, the distance 

ie 
2) 
60 
Figs. 59—61. Ofocepheus longipilus n. sp. 
59. Dorsal view. 60. Propodosoma, 61. Pseudostigmatic organ. 
from the top of the rostrum to the acetabulum I being equal to half the length 
of the propodosoma. 
Lamellz very low, almost parallel ridges, with sharp and even, slightly 
raised exterior edge from which their surface slopes gently downwards towards 
the median edge which is irregularly wavy and not always clearly defined. 
Between the proximal ends of the lamella there is an elongated, oval depres- 
sion. The interlamellar hairs are inserted a little in front of the pseudostig- 
mal organs, almost perpendicular, straight and fairly stout, almost half as long 
as the lamelle. In front of the lamella there are numerous linear wrinkles of 
the cuticle which together form an even curve, connecting the anterior ends 
of the lamella. In the anterolateral angles of this curve the lamellar hairs are 
