No. 2323. LARVAE OF THE CLERIDAE—BOVING AND GHAMPLAIN. 609 



size except on the head, where many are very short and placed in 

 small, light yellow pits. Frons with short tranversal impression 

 behind clypeus, low and flat elevation behind the angulus frontalis, 

 and with somewhat depressed posterior end. Mandible from apex 

 to attachm.ent of retractor tendon about two-thirds the length of 

 frons; apex does not project over inner corner of mandibular base; 

 tooth in front of retinaculum small; two mandibular setae. Hypo- 

 pharyngeal plates small, elongate, slightly chitinized, laterally not 

 extended beyond the bicuspidate end of the upward projecting 

 arm from stipes. Basal plate of cerci with four parallel rows of 

 linear impressions. Cerci half as long as frons, the recurved part 

 not included, contiguous where attached, divergent forming an 

 angle of about 30 degrees, slightly upward directed, conical, smooth 

 with apex comparatively long, pointed and recurved. 



CHARIESSA ELEGANS Horn, 



Hopk. U. S. No. 1227o; mature. Species reared; cast skin and imago preserved. 



(Fig. S7.) 



Total length of body, 22 nrni. Somewhat larger and more robust 

 than Ghariessa pilosa, but difficult to separate from this species, all 

 examined characters, as structures, proportions, chitinizations, and 

 color, being identical. 



6. Genus PHYLLOBAENUS Spinola. 



Body elongate vermiform; thoracic and abdominal segments of 

 about same size, Chitinous parts poorly developed, brown ocher 

 color prevalent. Membranous parts with pale bluish tinge, where 

 exposed, otherwise whitish. Head subtriangular twice as wide as 

 long. Frons slightly sculptured. Epicranium punctate-striate 

 above, smooth below. Ocelli arranged as in Chariessa but smaller. 

 Length of basal, second and apical antennal joints proportioned as 

 3:1:1; supplementary joint very small. Mandible without any 

 tooth between retinaculum and apex. Maxilla in proportion to gula 

 as long as 2 : 3 ; length of basal, second and apical joints of maxillary 

 palp proportioned as 1^:1:2; palpiger with well-developed plate. 

 Submentum and mentum without chitinizations. Stipes labii with 

 small anterior chitinization ; length of basal and apical joints of labial 

 palp proportioned as 1:2, Prothorax subrectangular, more than 

 twice as wide as long; prothoracic tergal shield slightly chitinized; 

 prothoracic sternal plate about as wide as the distance between the 

 front legs. Legs short. Abdomen with large intersegmental mem- 

 branes; second to seventh abdominal segments with dorsal ampullae. 

 Ninth abdominal segment semiglobular. Basal plate of cerci absent. 

 Cerci small, hook shaped, 



144382—20 — Proc.N.M.vol.57-- — 39 



