No. 2323. LARVAE OF THE CLERIDAE—BOVING AND CHAMPLAIN. 613 



the antennae; anterior row with two ocelli, posterior with two; all 

 ocelli approximately of same size; lower posterior ocellus a trifle 

 below, and upper posterior a trifle above the upper anterior ocellus. 

 Length of basal, second, and apical antennal joints proportioned as 

 2:1:1; supplementary joint small. Mandible longer than wide, 

 pointed; retinaculum well developed, somewhat closer to apex than 

 to basis ; no tooth between retinaculum and apex. Maxilla with thin 

 but comparatively broad bandlike chitinization at the base of cardo 

 and stipes; length of basal, second and apical joints of maxillary 

 palp proportioned as 1 : 1 : 2, palpiger well developed. Gula slightly 

 shorter than frons; somewhat longer than maxilla. Submentum 

 and mentum poorly chitinized. Stipes labii thinly chitinized ; length 

 of basal and apical joints of labial palpus proportioned as 1 : 2. Pro- 

 thorax rather large, with suboval outline, slightly wider than long, 

 about one-third longer than the following segments; dorsally nearly 

 completely covered with a shield. Sternal plate broadly pyriform, 

 thinly chitinized, with an indistinct median lanceolate region slightly 

 thicker chitinized than the rest. Meso- and metathorax without dor- 

 sal chitinizations. Legs normally developed. Abdomen with large 

 intersegmental membrane's; dorsal ampullae developed on sixth and 

 seventh abdominal segments; postscutellar areas well developed; 

 sternellar areas somewhat swollen. Basal plate of cerci covers most 

 of dorsal surface of ninth abdominal segment, is rounded, nearly 

 circular, thinly chitinized. Cerci well separated, medium sized, hook- 

 shaped. 



The present genus is rather closely related to the genera Ghariessa, 

 Phyllohaenus, and Neichnea; in many respects especially to iVe?^AM€a. 



TARSOSTENUS UNIVITTATUS Rossi. 



Hopk. U. S. No. 11286a; mature. Species reared; cast skin and imago preserved. 

 (Figs. 9, 2.5, 37, 57, 74. 93 107.) 

 Total length of body, 7mm.; extreme width, about 1^ mm.; 

 extreme thickness, 1 mm. ; anterior width of prothorax, about 1 mm. 

 Mandibles, epistoma, median endocarina of frons, and cerci sepia 

 brown ; remainder of headcapsule and trophi, prothoracic shield, legs, 

 basal plate of cerci from brown ocher to pale clay yellow ; membranous 

 parts violet with whitish median line and whitish muscle attachments, 

 ventrally paler, intersegmental membranes whitish. Setae incon- 

 spicuous, whitish. Frons with a short longitudinal impression an- 

 teriorily on each side of carina, and inside! of each impression an 

 oblique line diverging forward from carina. Mandible about half as 

 long as frontal suture, apex not projecting over inner corner of 

 mandibular base; retinaculum somewhat closer to apex than to base; 

 two mandibular setae. Basal plate of cerci about as long as frons. 



