140 MR. A. D. MICHAEL ON UNRECORDED 



curve upward again and have a raised edge. The reticulations vary in size 

 and shape ; a certain amount of bi-lateral symmetry may be traced in the 

 laro-er reticulations, the smaller are wholly irregular. The smaller plate is 

 posterior to the larger and is only divided from it by a narrow line ; it 

 measures less than one-eighth of what the larger does in an antero-posterior 

 direction, but is nearly as wide anteriorly as the posterior margin of the larger 

 plate ; it narrows considerably towards its posterior margin ; the reticulations 

 of this plate do not vary much in size or form ; they are round, or nearly 

 round holes, but are irregularly placed. 



Beyond the plates, both laterally and posteriorly, is a broad band of flexible 

 cuticle not strongly chitinized, but striated with very fine and close, wavy, 

 irregular wrinkles. 



Alono- the lateral edges of the body, commencing about over the insertions 

 of the third pair of legs and extending to the posterior margin, is a series of 

 processes which form the most striking feature of the species : they are 

 evidently modifications of the expanded, leaf-like hairs, or scales, which are 

 found upon so many of the more remarkable Acarina ; but instead of being 

 transparent and flexible, like the wing of a Bee, in the present species they 

 are strongly chitinized, stiff", and almost opaque. There are about ten of 

 these modified scales along each side of the body. There is bilateral sym- 

 metry between the corresponding scales on the two sides of the body, but 

 there is great variety between the various pairs of scales ; they have a 

 tendency to be larger as they get further back on the body ; but the posterior 

 pair, which are at the corners of the posterior margin, are much the largest, 

 and are fully one-third the length of the entire creature ; they face laterally 

 and are strongly convex outward, indeed very few of the scales are flat. 

 Four much narrower and more spine-like hairs, but still of a similar character, 

 are placed some way within the posterior margin, very near the edge of the 

 posterior reticulated plate. 



Ventral surface. Legs set very close together longitudinally, their coxse 

 nearly touching at their insertions into the body. Grenital aperture of 

 ? large, placed between the coxse of the three posterior pairs of legs, almost 

 elliptical, but slightly narrower anteriorly than posteriorly ; there is a thin 

 band-like projection of the anterior edge of the epigynum extending nearly its 

 whole width. The anus is placed on a hemispherical projection of the ventral 

 surface. The space between the coxse is smooth, that posterior to the fourth 

 coxae is reticulated ; the reticulations run into lines which diverge round the 

 anus. On each side of the anus, but some little distance from it, is a pair of 

 rather long-shaped chitinized scales, like some of those at the edge of 

 the body. 



Legs of moderate length, inserted near the edge of the body ; the first pair 

 pass the tip of the rostrum by about the length of their four distal joints ; 

 this pair are wholly tactile, and have the tarsi very thin and terminated by a 

 long tactile hair without any claw. The various joints of the legs, except 



