ring of the abdomen. Antt-nnic twentN'-six jointed. Colors 

 same as before. Length 35 to 40 milHmeters. 



A very feAv of tlie saltonas, about one in ten thousand, instead 

 of being the usual shade, have the general ground-color green- 

 ish, and the dark markings very faint, though apparent. These 

 greenish larv;e are consequently ver}' conspicuous when seen 

 among the others. Thej^ differ, though, ver}^ conspicuoushMrom 

 the green saltonas of caiiccllaia which can be at once recog- 

 nized by their lack of all dark mottlings save a number of mi- 

 nute black and white raised dots. 



SixiJi stage or J^o/adora. — Tihs insect was described by 

 Burmeister as follows : 



-It is most nearly allied to A. n/sficmii i-) Fabr. ot North 

 America, but is well distinguished from it by the much thicker 

 head, plainly betraying its greater powers of mastication, and 

 some variations in the markings . 



While this description of Burmeister is rather inadequate, 

 it suffices, since the type still exists in the Aiuseo Nacional in 

 Buenos Aires and has been examined and compared by tlie 

 writer with specimens from various parts of the infested region. 

 A more complete description is, however, herewith appended 

 in order to aid future students to recognize the insect after the 

 types may have been destroyed. 



Length to tip of wings of average specimens, male, (>'_* milli- 

 meters, female, 70 millimeters; of prothorax, male, 10 millime- 

 ters, female, 10.5 millimeters; of hind thighs, male, 23 millimeters, 

 female, 27 millimeters. 



Neiv/y-ivinged specimens. — General ground-color of body 

 above and of legs reddish-tile, streaked and dotted with darker 

 and lighter markings as shown in the different illustrations 

 presented herewith. Front wings, or tegmina, grayish-white 

 mottled Avith dark-brown. Hind wings transparent, with the 

 veins and cross-veins near base and hind I^order white; those 

 towards and along front margin and apex dusky. Hind tibiie 

 reddish, the spines white, tipped with black. 



(*) The Aciidi iiiii rn^lii ¡¡III of F;ilir¡L¡us niav prose to be Ihe same insecl Ihal 

 was called aiiicricaiiuiii hy Drur}'. .Should such be the case, we can readil_\- see 

 the propriety of BurmeisttT's comparison. I understand that Samuel IL.Scudder 

 of Cambridge, Massachusetts, is at present engaged in studying the genus -Schis- 

 tocerca with a view to separating the species and of straightening out the synon- 

 ymy. If such be a fact, entomologists will receive with delight his work when 

 once er.implet ed .md gi\ en i(_i the world. 



