ACARINA FROM THE JUAN FERNANDEZ ISLANDS 617 
the anterior, where the pair of curved lines flanking the pores of the hairs are 
more easily discernible than the others. 
In the anterior part of the shield there are several rounded areas of thin, 
depressed cuticle, of almost the same pattern as described by me in L. muri- 
cola (1908, p. 56, fig. 12 pl. 3). They are, however, far from conspicuous and 
in order to examine them thoroughly it is necessary to make the mite trans- 
parent in boiling lactic acid and then dissect the dorsal shield. 
In L. pallidus there is one median rounded area, longer than wide, ex- 
tending forwards about halfway between the 3rd and 4th median longitudinal hair, 
the last pair being inserted a little behind its middle marginally. This area is 
flanked by two more or less triangular areas with rounded angles and of vary- 

Figs. 145—147. Lelaps pallidus n. sp. 
145. Anterior part of dorsal shield. 146. Ventral shields. 147. Mandible. 
ing shape in different specimens. Almost in the middle of these areas there 
is a circular pore and the areas are subdivided into 4—5, smaller, rounded light 
areas. Further backwards there is a trace of the anterior part of the narrow 
longitudinal area, present in ZL. muricola TRAGARDH and ZL. sculpturatus V. 
ViTzrHuM. This is flanked by two groups of 5—6 faint, rounded areas, and 
further backwards more laterally there are two similar groups of rounded areas. 
The hairs of the dorsal shield are slightly curved and very pointed. The 
vertical hairs are much shorter than the others which increase gradually in 
length backwards, the shoulder hairs measuring 75 », while the hairs halfway 
between the shoulder and the posterior margin are about 135 ». long and those 
in the posterior third and at the posterior margin increase from 160 to 170 wu. 
1 In L. echidninus BERLESE delineates three such areas. v. VITZTHUM, on the other hand, 
who describes very carefully the corresponding feature in other species of L@/aps, does not 
delineate it nor mentions it in LZ. echidninus. 
