26 PROCEEDINGS ENTOMOLOGICAL SOCIETY 



The line of separation between the parts of this segment is marked 

 by a ring of fine fleshy crenulations. 



Second and third segments surrounded about the middle by undulate, 

 crinkly, thin-edged folds (PI. II, figs. 1-3) with five symmetrically 

 placed backward angulations in each fold on each side. Parts of these 

 two segments posterior to the folds with as many longitudinal sulci 

 as there are angles in the fold, and longitudinally striate with fine, ir- 

 regular wavy ridges. Anterior third of second segment finely striate 

 lengthwise. Part of second segment just in front of fold and anterior 

 portion of third segment granular. 



On fourth and following segments these folds broken up into series 

 of fleshy tubercles, on both sides of which surface of segments is 

 raised into low ridges, which on the anterior segments have few but 

 on the posterior segments several low protuberances. Fourth and fol- 

 lowing segments more prominently ridged transversely on dorsal 

 area and longitudinally on ventral area. A trace of longitudinal stria- 

 tion remains on posterior of the three ridges (on each segment as just 

 described) or protuberances representing it. The fleshy teeth derived 

 from the median segmental folds largest and most numerous on middle 

 of lateral area of each segment, where they are heaped up into irreg- 

 ular elevations, with two more prominent points forming a series 

 alongside; these elevations marked off by deep impressions both above 

 and below and becoming more prominent posteriorly. There are three 

 tubercles above (supralateral series) lateral prominences and about 

 five below (infralateral series) on each segment behind fourth. 



The fleshy fold continuous across the dorsal area of fourth segment; 

 (PI. II, fig. 2) ; back of this, dorsum of each segment marked by a de- 

 pressed, comparatively smooth elliptical area. These areas bounded 

 in front by a varying number of thin, fleshy teeth and posteriorly by 

 a series of low, broad, longitudinally striate protuberances. Two of 

 the latter fall into a series down the median line of the segments, on 

 the ninth and tenth of which they become closely approximate, much 

 more prominent, and round pointed. The first of the series (supra- 

 lateral) of three tubercles above the prominent lateral elevations 

 bound the dorsal depressions at the sides and stand in a series along 

 the back. 



Ventral series (PI. II, fig. 3) of protuberances marked off" from infra- 

 lateral series by a hiatus, by lower and thinner teeth, and by the for- 

 ward arching of the series. It consists essentially of two stronger 

 lateral teeth with a varying number of less prominent ones between. 

 On tenth segment the series is shortened and the middle elements are 

 almost lacking. Between these arched series of teeth and posterior 

 ridges on ventral surface of the segments (which are represented by 

 about four low, round protuberances) are depressed areas similar to 

 those of dorsal surface. These are bounded at sides by first protuber- 

 ances of infralateral series. Each segment from fourth to tenth has a 



