Pedipalpi, Ricinulei, and Opiliones. 35 



Megistobunus n. gen. 



Allied to Megabunus, but differs in several features. 

 Body very small, with the dorsal skin coriaceus and rather 

 hard, excepting on the three posterior abdominal segments. 

 Cephalothorax highly vaulted (fig. 3 a), even somewhat coni- 

 cally raised above, and last segment distinct; no frontal median 

 spine; supra-antennal area without denticles. Abdomen has 

 the tergites of the five anterior segments fused nearly as a 

 shield, but each segment has a spiniform process or denticle 

 in the median line. 



Ocular protuberance extremely large, constricted at the base, 

 and adorned with a few pairs of extremely long processes; 

 eyes proportionately small. 



Antennae somewhat small, normal and simple in the male; 

 first joint without ventral process. 



Palps (fig. 3 c and 3 d) longer than the body, moderately 

 slender. Femur with longitudinal rows of triangular denticles, 

 but without longer processes. Patella with a half dorsal, half 

 interior apophysis which is long and somewhat slender. Tibia 

 on the inner side produced into a quite short but distinct apo 

 physis. Tarsus nearly as long as the femur; claw simple. 



I^egs extremely long. First coxae scabrous below, as they 

 have a number of irregularly scattered granules while the 

 other pairs are less scabrous, and no pair possesses any regular 

 row of denticles at the anterior or posterior margin. Femora 

 similar in shape and thickness, without any secondary articu- 

 lation, but with rows of small denticles; no elongate spines 

 at the end of femora or patellae. 



Remarks. The genus is established on a single adult male. 

 The animal is in general aspect rather similar to a very long- 

 legged Liobunum, a genus from which it is very remote in im- 

 portant features. It is related to Megabunus, but differs from 

 the forms of this genus in the following features: the dorsal 



3* 



