ACARI 531 



top, exactly aslong as itjs wide at tlie base, and twice as long 

 as the subterminal tooth, which, on the contrary, is twice as 

 wide at the base as it is long, and bas convex anterior, sligbtly 

 concave posterior, edge. Bebind the subterminal tooth the 

 edge has 2 to 3 very small teeth, behind which there is a semi- 

 circular incision, and behind this the edge again rises to an- 

 other tooth, the anterior edge of which is 2 to 3 dentate ; behind 

 this there is a narrow incision from which pilus dentarius 

 projects, and behind this edge again rises to a tooth similar 

 to that in front of pilus dentarius but twice as large. 

 Behind this, the edge is perfectly even and straight. The dor- 

 sal fissure of the upper jaw, which is to be found in most of 

 the Parasitidae with normal chelae, and the existence of which 

 I hâve called attention to in a previous paper (1910, p. 409), 

 is to be found half-way between the condylus of the lower 

 jaw and the hindmost upper tooth. Pilus basalis bare, of 

 uniform width throughout, only tapering towards the rounded 

 top ; it is inserted submarginally, in the proximal fifth of the 

 jaw. 



Palpi without any pecuhar characteristics. Thus, joint I 

 laterally flattened, with thin ventral edge ; joint II, asusual, 

 widening anteriorly. Of the two ventral hairs of joint I, 

 the posterior one is slightly longer than the anterior, and 

 more finely pointed and bare, while the anterior one is 

 blunt and slightly hairy in the distal third. Interior distal 

 bristle of joint II widening Hke a chisel towards the top, 

 where it is rounded ; 2 to 3 pectinate posteriorly and distally ; 

 joint III mth the two usual, chisel-shaped bristles on the 

 médian side. 



Hypostoma. Hypostomatic hairs ^ long, setiform and of 

 subequal size ; 3 of them inserted closely together near the 

 base of the maxillary lobes ; the fourth pair is placed half- 

 way between the base of the palpi and the hind margin of 

 the hypostoma. 



Maxillary lobes articulated to a low projection homolo- 



