K0.1124. REVISION OF THE MELAyOPLI—SCVDDER. 341) 



intestines of those dissected. The first pair taken in eoitu was found 

 August 10, tlioujjli in Indiana many pairs were found by Blat<'hley by 

 tlie tirst of Auj^ust. 



2G. ROHrSTlJS SERIKS. 



In this group the male prozona is (jnadrate or a little lonj»itudinal 

 an(' the interspace between the mesosternal lobes of the same sex 

 twice or more than twice as long as broad. The eyes are rather widely 

 separated and the frontal costa broad and e<|UJil. The i)ro8ternal spine 

 is usually long. The tegmina are fully developed or only a little 

 abbreviated and either feebly spot ted, longitudinally streaked or wholly 

 free from markings; the hind tibiae are yellow or red, with from ten to 

 twelve spines in the outer series. 



The supraaual plate is shield shaped or triangular with feebly con- 

 vex or sinuous sides, and with the surface tolerably Hat; the furcula is 

 entirely wanting or in one or two instances barely indicated; the cerci 

 are excessively br(»ad and stout, ajjically greatly expanded and tlabel- 

 late, with the apic.il border either convex or more or less emarginate; 

 the subgenital piate is longer than broad, generally moderately nariow, 

 a little elevated apicallyand sometimes considerably prolonged, always 

 entire. 



It comprises insects of the largest size only and of a stout and bulky 

 aspect. Five species are known, occurring in the southern half or 

 more of the United States. 



I20. MELANOPLUS DIFFERENTIALIS. 



(Plate XXIII, tigs. 3, 4.) 



Caloptenus diferentiaJis Uhler!, MS. (1868).— Walsh, Kiley, Amer. Ent., I (1868), 

 p. 16: ibid., I (1869), p. 187.— Thomas, Proc. Acad. Nat. ScThilad., 1871(1871), 

 p. 149.— (iLo\ EK, 111. N. A. Ent., Orth. (1872), pi. viii, fij;. 12, pi. ix, lig. 4, 

 pi. XI. fig. 6.— Thomas, Rep. V. S. Geol. .Surv. Terr., V (187H), p. 166, pi., 

 fig. .5: Key 111. Orth. (1874-75), p. 3.— Riley I, Anu. Rep. Ins. Mo., VII (1875), 

 pp. 124, 173, fig. .33; ibid., VIII (1876), pp. 1.^3, 154.— Pitxam, Proo. Dav. 

 Acad. S<'., I (1876), p. 266.— Thomas, Bull. 111. Mas. Nat. Hist., I (1876), p. 68.— 

 Whitman, Grasshopper (1876), p. li), fig.— Hkixer, Can. Ent., IX (1877), 

 p. 144.— Bkssey, Bienn. Rep. Iowa Agric. Coll., VII (1877), p. 20!».— Tho.mas, 

 Rep. Ent. 111., VI (1877), pp. 44-4.5.— Riley, Loc Plague (1877), pp. 89, 191, 

 198-201, fig M ; Ainer. Nat., XII (1878), p. 284 ; Rep. U. S. Ent. Couini., I (1878), 

 pp. 220, 223, 225-226, 228, 298-29*), 301, 327, 447. 4.59.fig8. ,32, 110, pi. iv, fig. 1.— 

 Thomas, ibid., I (1878), p. 42; Bull. U. .S. (ieol. 8nrv. Terr., IV (1878), p.500 — 

 Riley, Bull. U. S. Ent. Comm., Ill (1S80), p. 39; Amer. Ent., Ill (ISSO), p. 

 220.— Thomas, Rep. Ent. 111., IX ( 1X80), pp. 91, 96, 127-128. fig. 24 ; Rep. U. 8. 

 Ent. Comm., II (1881). pp. 106-107.— Lixtxku, Ins. Clover (1881), p. 5.— 

 OsBORN, Amer. Nat., XVII (1883), pp. 1286-1287.— BRrxRR, Rep. U. 8. Ent. 

 Comra., Ill (1883), pp. 54, 60.— Forbes, Rep. Ins. 111., XIV (1884), p. 23.— 

 Riley, Stand. Nat. Hist. , II (18><t), pp. 194-li)5, fig.271.— Osbokx, Bull. Iowa 

 Agric. Coll. Dep. Ent., II (1884), p. 83.— Bruxek, Rep. I . 8. Ent., 1884 (1885), 

 p. 399. — Riley, Amer. Nat., XX (1886), pp. 5.58-.5.59. — Cook, Beal's (brasses 

 N. A., I (1887), p. 373.— Weed. Bull. Ohio Agric. Exp. St., Techn. Ser.. I 

 (1889), pp. 40-41.— LuoGER, Kep. Agric. Exp. St. Miun. (1889), p. 340, fig. 16.— 



