NO. 1124. EE VISION OF THE MELANOPLISC UDDER. 287 



84. MELANOPLUS EXTREMUS. 

 (Plates I, figs./, $r; XVIII, fig. 10.) 



? Locusta leiicostoma KIRBY, Faun. Bor. Amer., IV (1837), p. 250. BETHUXE, Can. 



Ent., VII (1875), p. 129; Ins. Brit. Amer. (1884), pp. 120-121. 

 ? Aaridium (Locusia) leucostomnm DE HAAX, Bijdr. Kenii. Orth. (1842), p. 142. 

 Caloptenus extremus WALKER, Cat. Derm. Salt. Brit. Mus., IV (1870), p. 681; Can. 



Ent., IV (1872), p. 30. THOMAS, Rep. U. S. Geol. Surv. Terr., V (1873), p. 



225. BRUXER, Rep. U. S. Ent. Comm., Ill (1883), p. 59. CAULFIELD, Can. 



Rec. Sc., II (1887), p. 401; Can. Orth. (1887), p. 14. 

 Pezotettixjumus DODGE!, Can. Ent., VIII (1876), p. 9. BRUNER. ibid., IX (1877), 



p. 144; Rep. U. S. Ent. Comm., Ill (1883), p. 59. 

 Caloptenus parvus PROVAXCHER!, Nat. Canad., VIII (1876), p. 110; Faime Ent. 



Can., II (1877), p. 36. 

 Melanoplus junius SCUDDER!, Proc. Bost. Soc. Nat. Hist., XIX (1878), p. 286; Ent. 



Notes, VI (1878), p. 45. MORSE, Psyche, VI (1892), p. 262. OSBORX, Proc. 



Iowa Acad. Sc., I, Pt. n (1892), p. 118. BRUNER, Publ. Nebr. Acad. Sc., Ill 



(1893), p. 28. MORSE, Psyche, VII (1894), p. 106. 

 Caloptenus jtinius SCUDDER!, Can. Ent., XII (1880), p. 75. 

 Melanoplus extremus CAULFIELD, Rep. Ent. Soc. Ont., XVIII (1886), p. 71. 

 Melanoplm parrus CAULFIELD, Rep. Ent. Soc. Ont., XVIII (1886), p. 71. 

 Caloptenus (Helanoplns] parvus CAULFIELD, Can. Rec. Sc., II (1887), p. 401; Can. 



Orth. (1887), p. 14. 



Of rather small or medium size, brownish fuscous, generally rather 

 dark, often with a ferruginous tinge. Head a little prominent, dark 

 testaceous often somewhat infuscated, above much infuscated, the 

 added infuscation sometimes confined to the fastigium and two diverg- 

 ent, enlarging streaks behind it; vertex gently tumid, feebly elevated 

 above the level of the pronotum, the interspace between the eyes nearly 

 (male) or more than (female) twice as wide as the first antennal joint; 

 fastigium steeply declivent, not very deeply (male) or broadly and very 

 shallowly (female) sulcate throughout; frontal costa failing to reach 

 the clypeus, slightly narrower than the interspace between the eyes, 

 subequal but faintly and very gradually broadening downward, 

 depressed at and sometimes sulcate below the ocellus, biseriately punc- 

 tate; eyes moderately prominent especially in the male, not very large, 

 but little longer than the infraocular portion of the genae; antennae 

 ferruginous, fully four-fifths (male) or from three-fifths to two-thirds 

 (female) as long as the hind femora. Pronotum subequal or enlarging 

 a little on the metazona (in the female throughout), the lateral lobes 

 lighter, sometimes considerably lighter than the disk, with a broad, 

 equal, piceous, postocular band crossing the prozona, the disk often 

 luteo-ferruginous punctate with fuscous, very broadly convex, and 

 passing by an abrupt but smoothed shoulder simulating a lateral carina 

 into the anteriorly tumid vertical lateral lobes; median carina slight, 

 percurrent, distinctly feebler but rarely subobsolete on the prozona; 

 front margin subtruncate with feeblest possible indications of a median 

 emargiuation, hind margin very obtusaugulate, the angle rounded in 



