ACARI FROM NEW ZEALAND. 145 



6. That the tridactyle, homodactyle claws are twice the size, '075 mm. 

 instead of '035 mm. (whence the name). 



7. The greater lengths o£ the legs, especially the tarsi. 

 Habitat. Three specimens from Maunga Karetu and Fielding. 



Gam ASiD M. 



Teachynotus sclerophyllus *, sp. n. (PI. 21. fig. 25 & PI. 17. fig. 4.) 



Length '93 mm. 



Breadth '58 „ 



Length of legs, 1st and 2nd pairs . . . "70 ,, 

 „ „ 3rd pair '62 „ 



„ 1, 4th „ "78 „ 



These measurements, and the following description and the figures are 

 unfortunately taken from a single specimen, a female, which is the only one 

 I possess. 



Colour. Dull chitinous brown of medium depth. 



Texture. Rough and unpolished. 



Body almost pentagonal in general outline, but not equal-sided ; the sides 

 and base are curved, the sides more so than the base. No demarcation 

 between cephalothorax and abdomen. Rostrum (capitulum) small, about one- 

 seventh of the whole body, flattened^ pentagonal, equilateral but not equal- 

 sided, the base forms the posterior margin and is nearly straight ; the two 

 sides comparatively long and very slightly concave, the two anterior faces 

 short, approaching rapidly, and meeting in a point. Palpi with the two distal 

 joints passing the tip of the rostrum. Mandibles with very small chelae (but 

 I have not got those of the J"). The greater part of the dorsal surface is 

 covered by two strongly reticulated, probably perforated, chitinous plates, 

 which in character resemble those of Tingis (Hemiptera). The anterior of 

 these plates is much the larger, occupying over four-sevenths of the entire 

 length and about two-thirds of the width of the creature ; it has a raised 

 central portion commencing about opposite the insertions of the third pair of 

 legs, and extending backward in the median line until about one-eighth of 

 the length of the plate from the posterior margin of the plate ; the raised 

 part becomes broader and more raised as it extends backward, and ends 

 suddenly with a convex posterior edge ; the median portion of this raised 

 part is marked off by an irregular, wavy, chitinous rib, like those forming 

 the reticulations ; within this rib the surface is smooth and dull, without 

 reticulations ; the part outside the rib is reticulated like the remainder of the 

 plate. Outside the raised central part, both laterally and posteriorly, is a 

 somewhat depressed area ; then the lateral and posterior margins of the plate 



* aK\rjp6i, hard ; (j)vXXov, a leaf. 



