248 Annals Entomological Society of America [Vol. Ill, 



sive of the genac. Anterior border margined. Carinae narrow; bent 

 dorsad; lateral margin with a single emargination but with no real 

 denticulation. Crossed by a fine median longitudinal line. 



Second segment bent forward at the sides. The anterior angles 

 of the carinae sub-rectangular, somewhat rounded, overlapped by the 

 first plate. A. small denticulation on outer side of the cephalo-lateral 

 angle and two weak or obsolescent cmarginations indicated farther 

 caudad. Caudo-latcral angles not rounded, a little obtuse. Caudal 

 margin of carina excavated or abruptly bending meso-cephalad. Cari- 

 nae rather narro\\-, bent somewhat dorsad. Inter-carinal region of 

 dorsum strongly elevated and conxx'x as it is on subsequent segments. 



Lateral margin of carina of third segment shorter than that of the 

 second. Anterior angle rounded, the emargination caudad of it as on 

 the second segment, the denticle in front of the emargination likewise 

 low and rounded. Posterior angle rectangular or acute. Caudal 

 margin of carina straight, extending cephalo-mcsad without showing 

 any curvature. 



Fourth segment similar to the third but the lateral carinal margin 

 longer, sub-equal to that of the first, and the caudal angle rectangular 

 or slightly obtuse. Only the single anterior emargination indicated. 



Fifth segment abruptly longer. Lateral carinal margin bulging 

 laterad, being mesally very obtusely angular. Caudal angle obtuse 

 and rounded. The anterior emargination very weak. 



Sixth segment a little longer than the fifth, the lateral carinal 

 margin but weakly and evenly convex. The emargination very faint. 



Subsequent segments sub-similar but the cmarginations not at all 

 manifest. The caudal angles in proceeding caudad become more and 

 more acute and finally extended or produced sharply. All but a few 

 of the segments with the dorsal transverse sulcus sharply impressed 

 and extending well toward the carinae where it becomes more indis- 

 tinct. A median longitudinal impression which is distinct in front of 

 the transverse sulcus which is mostly vague or absent caudad of it. 



Anal scutum Avith the process truncate and apically the caudal 

 end shallowly emarginate. 



Anal valves with the caudal margin a little incurved, meeting the 

 mesal margin at an acute but rounded angle. Mesal margin elevate. A 

 short curved impression near the mesal margin of each valve and about 

 the middle of its length, the concave side being mcsad. A longer and 

 also slightly curved impression toward dorsal margin, the concavity 

 being dorsad or ectad. 



Anal scale relatively long, the caudal border emarginate. Later- 

 ally weakly emarginate at proximal ends of sides. 



Ventral plates with a longitudinal median impression which is 

 distinct on the posterior segments but is indistinct or not at all evident 

 cephalad. Transverse im]iression mosth' very weak. All rather dense- 

 ly clothed with hair, some of which is cons])icuously long. 



Legs sparsely clothed with short stiff hairs which are most abtm- 

 ant on distal joints and on the ventral or inner side. 



