32 Studies on Arthropoda. I. 



with three of the six sub-families into which he divided the 

 family. On p. 10 he separates the sub-family Phalangiinse 

 from the five others in having no horizontally protruding pro- 

 cess on the lower side of first joint of the antennae (he named 

 these appendages mandibles), while such a process is constantly 

 found in all the other sub-families. According to this definition 

 my two genera belong to his Phalangiinse. But it has been 

 more difficult to refer them to any of the numerous genera 

 accepted or established by Dr. Roewer; one of them I refer to 

 an old genus, but I find it necessary to establish a new genus 

 for the reception of the other. 



Dacnopilio insularis n. sp. 



PI. Ill, figs. 2 a 2d. 



Male. 



Body oblong, with the posterior margin, seen from above, 

 somewhat flatly rounded; the skin coriaceous and rather flexible. 

 Surface of cephalothorax with a considerable number of con- 

 spicuous, triangular, acute denticles distributed in the following 

 way : a transverse group of about sixteen such denticles occupies 

 the anterior half of the area in front of the ocular protuberance, 

 -and some among these spines are placed on the front margin; 

 obliquely outside and in front of each antero-lateral angle of 

 the ocular protuberance a single denticle is found, while each 

 more lateral part of the surface has eight or nine denticles. 

 The supra-antennal area has below a pair of very distinct den- 

 ticles, and between this pair and the upper margin rudiments 

 of a second pair. The two posterior thoracic segments are well 

 marked off, and each has a transverse row of similar teeth. 



The ocular protuberance is middle-sized, longer than high, 

 without any median furrow, but armed with seven rather 

 low teeth distributed in two rows (fig. 2 b) ; the protuberance 

 is scarcely as long as its distance from the front margin. 



