No. 2323. LARVAE OF THE GLEBIDAE—BO VI NG AND GHAMPLAIN. 615 



CYMATODERA OVIPENNIS LeConte. 



Hopk. IT. S. No. 9902s; mature. Species reared; imago preserved. 

 Body digitif orm ; total length, 17 mm.; extreme width, about 3 

 mm.; extreme thickness, 2 mm.; anterior width of prothorax, If 

 mm. Mandibles, epistoma, endocarina of frons and cerci sepia 

 brown; remainder of headcapsule and trophi, antennae, prothoracic 

 shield, basal plate of cerci brown ocher; other chitinous parts clay 

 yellowish; membranous parts dorsally deep violet, nearly black, 

 with whitish spots above the heart and the muscle attachments, 

 ventrally whitish, intersegmental membranes whitish. Setae long, 

 rather stiff, yellow, numerous on head, legs and all segments. Frons 

 with transversal impression behind clypeus, an oblique line defining 

 inner margin of antennal ring and two, rather faint lines on each 

 side of ^.nd parallel with the endocarina; posteriorly transversally 

 rugose. Epicranium dorsally transversally rugose, ventrally smooth. 

 The three ocelli arranged to form a right angle; anterior ocellus 

 just behind the ventrolateral part of antennal ring, lower posterior 

 ocellus as far behind the anterior ocellus as the length of second 

 antennal joint, upper posterior ocellus right above the lower pos- 

 terior one. Mandible with a slight marginal elevation between 

 retinaculum and apex; two mandibular setae. Prothoracic shield 

 transversally rugose. Meso- and metathoracic dorsal plates present, 

 Basal plate of cerci nearly circular, somewhat longer than frons, 

 finely wrinkled; posteriorly in the middle line with a single longi- 

 tudinal deepening and on each side of middle line with three longi- 

 tudinal, shallow impressions. Cerci slender and comparatively small, 

 about one-fourth the length of the basal plate, hook-shaped with 

 moderately recurved apex, separate, parallel, as far apart as half of 

 their length. 



CYMATODERA MOROSA LeConte. 



Hopk. U. S. No. 126B0«; mature. Species reaj-ed, larvnl skin and imago preserved. 

 (Figs. 11, 24, 38, 58, 95, 114, 124, 130.) 

 Very close to C. ovipennis; size, structural details, and color of 

 chitinous parts as in that form. Difference only found in the color 

 of membranous parts, these being more bluish and lighter in 

 G. nwrosa than in 0. ovipennis. 



CYMATODERA BALTEATA LeConte. 



Hopk. U. S. No. 11855&; mature. Species reared, larval skin and imago preserved. 

 Digitiform; length 11 mm. Chitinons parts dark colored, femora 

 with two dark spots. Membranous parts purple with whitish pat- 

 tern above heart and muscle attachments, ventral surface and in- 

 tersegmental skin whitish. Setae numerous on head and all seg- 



