ACARINA FROM THE JUAN FERNANDEZ ISLANDS 



593 



Mouthparts (fig. TJ). Hypostome large, pentagonal, with rounded 

 angles, with one pair of small hairs far forward. The palps to mutilated for 

 an investigation. 



Hysterosoma (fig. ^6) 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 



82 80 



Figs. 77 — 82. Cepheus crinitus n. sp. 



77. Hypostome and maxillae. 78. Leg III. 79. Leg IL 80. Propodosoma. 81. Pseudostig- 



matic organ. 



80. 

 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 III; between epimera III and IV they 

 do not reach the sternum. Epimera I with two pairs of hairs, II with one 

 pair. III 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 



