250 PROCEEDINGS OF THE ACADEMY OF [PaRT II 



length of appendicular field cf 3.8, 9 3.05; width of appendicular 

 field cf 4.7, 9 3.4 mm. 



MELESTORA Stal. 



1858. Melestora Stal, Kongl. Svenska Freg. Eugenie's Resa, Zool., I, p. 311. 



We regret to state that, from the material now available, we are 

 convinced that our recent characterization of the genus'''^ is incor- 

 rect, applying instead to the genus Ceuthohi a, described on page 292. 



The genus Melestora as here defined, includes the South American 

 species adspersipennis Stal, fuscella Stal and argentina (Rehn).^^ 



Genotype. — Melestora adspersipennis Stal.^* 



This genus shows, in the male sex, nearest relationship to Comp- 

 sodes, agreeing in the elliptical pronotum with a medio-longitudinal 

 sulcus^^ and somewhat impressed disk, femora not strikingly en- 

 larged, sinistral as well as dextral tegmen with a conspicuous diag- 

 onal channel"" and discoidal sectors oblique, wings with anterior 

 field over twice the area of the radiate field, with ulnar vein develop- 

 ing complete arcuate branches and radiate field proximal in position 

 and not folding, dorsal surface of abdomen with third tergite spec- 

 ialized mesad'^ and pulvilli absent. 



We find that Melestora as properly restricted, ^^^ differs from Comp- 

 sodes in the male sex in having the interocular area decidedly 

 wrinkled, the median and caudal femora supplied on their ventro- 

 cephalic margins with a single distal spine, as well as having the 

 genicular spine, which is present in both genera. 



These genera represent a distinctive group, particularly^ striking 

 in having the anterior field of the wings very large, in area approxi- 



•^6 Mem. Am. Ent. Soc, No. 4, p. 121, (1920). 



^" Incorrectly referred by us to the genus Compsodes, at the time that genus 

 was described. Mem. Am. Ent. Soc, No. 2, p. 209, (1917). 



«8 Selected by Kirby, Syn. Cat. Orth., I, p. 167, (1904). 



^^ In the aberrant Compsodes cucullatus (Saussure and Zehntner), the pronotum 

 is produced over the head, the cephalic margin showing greater angulation, while 

 the medio-longitudinal sulcus is subobsolete. 



^^ This channel is not shown by Stal's figure. That author's description of 

 the interocular area and pronotum leads us to the present conclusion and the 

 belief that the diagonal channel was by accident omitted from the figure. 



^^ This was not noted by us in our description of Compsodes schirarzi (Caudell), 

 Mem. Am. Ent. Soc, No. 2. p. 211, (1917). In that species the third tergite is 

 weakly impressed meso-proximad, with a minute node mesad, surrounded by very 

 minutely microscopic hairs, the caudal margin of the preceding tergite weakly 

 raised, thus showing a broad convexity above this. 



^'^ Judging from the data given by Stal, material of argentina at hand and a 

 series representing all of the known species of Compsodes. 



