KKV TO srr,oi;m:its OK OKTIIOPTKUA. 



A DESCRIPTIVE rATAumrE OF TIM-: ORTHOPTERA OF 



THE EASTERN* I'NITFJ) STATICS AND EASTERN 



CANADA. 



As represented in the territory covered by this work llic order 

 ORTHOPTERA. defined on p. 1*4, may he subdivided into four 

 classes or suborders, which in turn are represented by eii>ht fami- 

 lies. 7 The suborders may be distinguished by the t'ollo\\ ini; : 



KKV TO SflJOKIH KS OK KASTKKX ORTHOITKR \ . 



a. Abdomen of both sexes terminating in horny forceps-like appendages: 

 body short, narrow, more or less flattened; head horizontal, the 

 mouth in front; tegmina, when present, leathery, very short, with- 

 out veins, meeting in a straight line down the back; tarsi 3-jointed, 

 usually without arolia. Suborder I. DKKMAPTORIA. p. 42. 



oo. Abdomen not terminating in forceps-like appendages; tegmina us- 

 ually membranous or parchment-like, thickly veined, not meeting 

 in ?, straight line down the back, but usually overlapping. 

 l>. Legs of equal or nearly equal size, the hind femora not enlarged 

 for leaping; organs for producing sound absent; tegmina ar. r ! 

 wings of nymphs, when present, in a normal position; oviposi- 

 tor concealed. 



c. Body short, broad, oval, depressed; head almost wholly concealed 

 beneath the pronotum, the mouth posterior when at rest; ocelli 

 generally two; pronotum shield-shaped, transverse; legs with 

 coxae depressed and femora compressed. Insects of rapid mo- 

 tion. Suborder II. CURSORIA, p. 59. 



cc. Body elongate, narrow; head free, not covered by pronotum, the 

 latter usually longer than broad; ocelli three or wanting; legs 

 slender, rarely depressed. Insects of slow motion. 



Suborder III. GRKSSORIA. p. 114. 



bl>. Legs of unequal size, the hind femora fitted for leaping, being- 

 much thickened and swollen, and usually much longer than thp 

 middle femora; organs for producing sound usually present; 

 tegmina and wings of nymphs, when present, in a reversed po- 

 sition; ovipositor usually exserted so as to be plainly visible. 



Suborder IV. S.U/TATOIMA. p. 148. 



"The eight families of Orthoptera hereinafter trea.fi comprise all those represented 

 in Xortli America, with the exception of the (ii-yllohlattiJic. a family t'onn.Vd b\ K \l 

 Walker (1914, 93) for a small windless thysanuriform insect, iiryUnl>init,i t'tiinl-odci- 

 /,'jmi.? Walker, taken on Sulphur Mountain. Banff, Alberta, and theiei. , .his 



work, extralimital. The females possess an exserted ovipositor, similar 1" that of cer- 

 tain Tettigoniids, and thereby differ from all other known non-saltatorial < hthoptcra. 

 Students interested in this remarkable insect, which forms a sort of "livini; fo il" or 

 connecting link between the Orlhoplera ifenuina as treated in this work and other 

 more primitive orders of insects, as the tsoptera and Plecoptera, are referred to tin- 

 paper bv Walker (loc. cit.) and also to four others by Dr. (\. ('. ( 'ramnton, -.inbli-hed 

 in tin- Entomological News (XXVI, 1015, .i.!7'. XXVII. mio, 241; XXX 1910. 42. (14) 

 and the Canadian Entomologist (XL1X, 1017. 213); also to om- by \Va!l ;i (Can. F.nt., 

 LI, 1919, i.;i). 



