ACARINA FROM THE JUAN FERNANDEZ ISLANDS 613 
downwards; tarsus with slightly constricted base, very slender and straight, of 
even width throughout; ambulacres brooken off. 
Legs Il (fig. 131); femur large, almost as wide as it is long, with ventral 
posterior angle projecting as a strong tooth; calcar femoralis powerful, of al- 
most even width throughout, with short tooth at the anterior edge near the top 
and a thin triangular blade along the anterior edge; pilus axillaris straight, 
sharply pointed, genu and tibia without any appendages; tibia ventrally, near 
the anterior margin with a long, straight bristle; tarsus with two similar bristles 
near the base, one ventrally, the other exteriorly; at the top there are two very 
stout bristles and ventrally in front of the middle there is a third bristle. 

Figs. 134—137. Pachylelaps hamifer nu. sp. 
134. Top of maxilla (hairs missing). 135. Maxillary palp (some hairs missing), 136, Epistome. 
137- Mandible. 
Loc.: Juan Fernandez, Masatierra, Puerto Ingles, c. 400 m. a. s. Among 
dry leaves in dense forest. Aug. I917, no. 790. 
23. Cosmolelaps communis n. sp. — Figs. 138—144. 
Female. 
Length 620 », width 380 wu. 
Colour light brown. 
Dorsal shield (fig. 138) with anterior margin well rounded, the sides in 
front of the shoulders slightly concave, the sides very slightly convex, almost 
paralell and the posterior margin obtuse. The cuticle has a rather faint but 
especially in the posterior half quite distinct scaly or polygonal texture and is 
generally more or less covered with dirt. There is only one pair of narrow 
