ACAKI FROM NEW ZEALAND. 147 



the tarsi, are rough and irregular in form, with numerous strong chitinous 

 knobs and projections, and a tendency to thick, rough, irregular blades on 

 their outer edges ; these are carried to the greatest extent on the third and 

 fourth joints of the first pair of legs. There are short, stout, chitinous spines 

 on most of the joints except the tarsi, and a few fine hairs on the tarsi. 

 Habitat. A single specimen from the Ruahine Range. 



Trachynotus fimbriatipes *, sp. n. (PI. 21. figs. 26-28 & PI. 20. fig. 24.) 



Lenoth about "75 mm. 



Breadth „ *45 „ 



Length of legs, 1st pair „ '46 „ 



55 5? 2na „ ,, 'oD ,, 



„ 3rd „ „ -28 „ 



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 lightish brown, almost bay. 



Texture unpolished, mostly rough. 



Body approaching a long elliptical form, but very irregular ; the anterior 

 margin formed of two bisymmetrical, very shallow concavities meeting in a 

 slight central point and having their lateral points somewhat projecting. No 

 demarcation between cephalothorax and abdomen. Rostrum almost entirely 

 hidden, from above, by the projecting dorsal plate and the fimbriated margins 

 of the front pair of legs ; but about the four distal joints of the palpi show 

 from the dorsal aspect, and a small central portion of the epistome also shows 

 when the rostrum, is held horizontally. Mandibles (of ? ) very slender. A 

 broad irregular band of smooth, but not polished, chitin occupies the whole 

 inedian part of the dorsum from the anterior margin until within one-tenth 

 of its length from the posterior margin. This smooth band is composed of 

 thin chitin, and is slightly sunk as compared with the remainder of the 

 dorsum, but is itself a little convex ; at about one-tenth of the length of 

 the dorsum from the anterior margin this smooth band sends off a short 

 spoon-shaped branch directed backward and laterally at an angle of about 45*^. 

 The band itself is somewhat widened near its anterior and posterior ends. 

 There is also a narrow smooth space round the lateral and posterior margins, 

 commencing just behind the second pair of legs ; the irregular form of this 

 space is best seen from the drawing. The posterior margin of this space 

 bears six bisymmetrical pairs of thick curved hairs on its outer edge, 

 each hair mounted on a small papilla, and there are two pairs of smaller, but 

 otherwise similar, hairs a little distance from the edge. The whole of the 

 remainder of the dorsal surface is covered with a chitinous plate so closely 

 and irregularly pierced with holes of from about -009 mm. to about '015 mm. 



* Fimbriatus, bordered ; pes, a foot, or leg. 



