480 Mr. R. I. Pocock oi the 



neath, each, tlie first two excepted, marked posteriorly in the 

 dorsal middle line with a single pale spot, and on each side 

 immediately in front of the foramen repugnatorium with a 

 similar spot ; legs, antennee, labral region, anal valves, and 

 posterior portion of anal tergite testaceous. 



Body cylindrical ; length 39, width 4 millim. ; number of 

 somites forty-three (adult). 



Head-plate marked by a shallow median sulcus, which 

 divides the labral region into two halves, and above is repre- 

 sented by a pale band of colour ; labral region furnished on 

 each side with two conspicuous setiferous punctures, one near 

 the middle line, the other near the side margin. Eyes large, 

 consisting of a somewhat quadrate mass of ocelli. 



Antennce short, not projecting laterally beyond the hind 

 margin of the first tergite ; proximal segments smooth and 

 less narrowed proximally ; distal segments scantily hirsute 

 and more narrowed proximally. 



F'lrst tergite not projecting below so far as the second, with 

 rounded lateral margin, straight antero-lateral margin, and 

 slightly raised antero-lateral border, the sulcus which marks 

 the border extending from the ocular area almost to the pos- 

 terior portion of the lateral margin. 



Each somite, with the exception of the first and last, 

 divided into a larger anterior and a smaller posterior portion 

 by a complete transverse sulcus ; laterally and interiorly 

 from this sulcus arise before and behind numerous secondary 

 sulci, just as the webs of a feather arise from the shaft, those 

 behind running longitudinally to the posterior margin of the 

 somite, those in front running transversely towards the sum- 

 mit of the somite in a direction more or less parallel to the 

 sulcus from which they originate ; one of these, stronger than 

 the rest, starting a little below the middle of the lateral sur- 

 face, runs completely round the dorsum parallel with the 

 main sulcus ; in the space bounded by these sulci, but close 

 to the posterior of the two, is, on each side, the foramen 

 repugnatorium, which is situated within a loop of the last- 

 named sulcus. Posterior (uncovered) portion of dorsal region 

 of each somite (except the last) smooth and shining. 



Anal somite. — Tergite produced behind into an apically 

 rounded angular prominence, which covers the superior angle 

 of the anal valves, but does not project beyond the valves j 

 anterior portion of valves convex, posterior portion compressed, 

 with prominent margins ; posterior borders of valves con- 

 spicuously convex from above downwards; subanal plate 

 with obtusely angled posterior margin. 



