ACARINA FROM THE JUAN FERNANDEZ ISLANDS 593 
Mouthparts (fig. 77). Hypostome large, pentagonal, with rounded 
angles, with one pair of small hairs far forward. The palps to mutilated for 
an investigation. 
Hysterosoma (fig. 76) quite as broad as it is long, with acute antero- 
lateral angles, paralell sides and posteriorly broadly rounded; dorsal side only 
gently arched. Hairs very long, curved, arranged in two longitudinal rows of 
78 

Figs. 77—82. Cefheus crinitus n. sp. 
77. Hypostome and maxille. 78. Leg III. 79. Leg I. 80. Propodosoma. 81. Pseudostig- 
matic organ. 82. Ventral side. 
5 pairs near the centre, 5 pairs between the median row and the margin of 
the body and 4 pairs of marginal hairs. 
Ventral side (fig. 82). Sternum broad, with well developed apodemata 
between epimera I and II and II and IJJ; between epimera III and IV they 
do not reach the sternum. Epimera I with two pairs of hairs, I] with one 
pair, HI with 3 pairs and IV with 3 pairs, placed as fig. 82 shows. Hind 
margin of epimera IV thickened to straight ridges running obliquely backward 
towards the posterior margin of coxa IV. 
Genital aperture longer than wide, almost rectangular, with 4 pairs of 
