126 Proceedings of the Royal Society of Victories 



The depth through the body measures about 1 mm. 



The surface of the whole body is smooth, with long flexuose 

 setse disposed irregularly over the dorsal and lateral surfaces. 

 At the extreme posterior margin of the. head, and of each 

 segment of the pereion, there is a single row of fine setse pointing 

 backwards. Along the inferior margin of each segment, from 

 the first to the penultimate, short stout setse are sparsely disposed, 

 while at the posterior inferior angles of each segment of the 

 pereion, except the last, there is a tuft of stout setse pointing 

 hindward. Upon the epimera also there are a few scattered fine 

 setse pointing downward. 



Head. — The head is longer than the following segment, and 

 also deeper and somewhat wider. The dorsal surface is very 

 convex and curves downwards anteriorly, making the outline, as 

 seen in a lateral view, subtriangular. The anterior margin as 

 seen from above is deeply concave behind the bases of the upper 

 antennae. The inferior margin is nearly straight for the anterior 

 two-thirds, it is then deflected downwards. At the anterior 

 angle there is a notch above the maxillary palp. Equidistant 

 between the dorsal and ventral surfaces the posterior margin is 

 deeply cut forwards and then downwards to join the deflected 

 posterior margin, so that a large triangular space is formed. At 

 the apex of this triangle a depression runs forward and upward 

 towards the dorsal surface. There is no trace of any eyes. 



Perceoti. — The first segment of the perseon is only about two- 

 thirds as long as the second. The antero-inferior angle is 

 produced forward to occupy the triangular space in the postero- 

 inferior angle of the head. The inferior margin is straight with 

 the exception of the anterior extremity which is produced down- 

 ward somewhat. The second, third and fourth segments are 

 subequal ; the antero-inferior angles of each are rounded off", and 

 the inferior margins slightly concave above the epimera. The 

 fijth and sixth segments are subequal and shorter than the 

 preceding one, and the seventh shorter than the sixth, being of 

 similar length to the first. The inferior margins of each of these 

 last three segments is deeply emarginate above the epimera, 

 which are situated at the posterior extremity of the segments. 



Pleofi. — The four first segments of the pleon are subequal, and 

 measure conjointly the length of the penultimate segment of the 



