I0 2 ECONOMIC ENTOMOLOGY 



3. Large, 3^^ inch long, elongated, yellowish, head cone-pointed, on 

 ducks, — Lipeurus squalidus Nitzsch. 



4. Large well-marked louse, 3^^ inch long, on ducks. — Trinotum 

 luridum Nitzsch. 



5. White, almost transparent louse, on goose. — Trinotum lituratum 

 Nitzsch. 



C. Feather-lice of Turkey: 



1. Head with hind angles extending backward into bristly styles; 

 ^^ inch long. — Goniodes stylifer Nitzsch. 



2. Yellowish, elongated, flat pointed body, 3^7^ inch long. — Lipeurus 

 poly trapezius Nitzsch. 



Orthopteroid Insects 



The old Order Orthoptera is now broken into several new Orders by 

 the elevation of certain Families to ordinal rank. The relationship 

 of these and other allied orders is shown by the following grouping: 

 I. Sub-class: Orthopteroida. 



Orders: Orthoptera, Phasmoidea and the allied orders Dermap- 

 tera and Thysanoptera. 

 IL Sub-class: Blattaeformia. 



Orders: Mantoidea, Blattoidea and the allied orders Isoptera, 

 Corrodentia and Mallophaga. 



Chief Economic Orthopteroid Orders: 



A. Hind femora large and fitted for jumping. — Orthoptera (Locusts, Crickets, etc. 

 AA. Hind femora not large, not fitted for jumping. 



B. Body elongate; abdomen without movable forceps. 



C. Front legs spined and fitted for grasping.^ — Mantoidea {Mantids). 

 CC. Front legs not formed for grasping, legs long and slender. — Phas- 

 moidea (Walking slicks). 

 BB. Body elongate; abdomen with movable forceps; fore wings short and 

 horny, hind wings nearly circular. — Dermaptera (Earwigs). 

 BBB. Body oval, flattened; legs fitted for running.- — Blattoidea (Cockroaches). 



ORDER ISOPTERA (WHITE ANTS) 



FamUy TERMITID.S 



This order is characterized by incomplete metamorphosis, biting 

 mouth-parts and net-veined wings that fold flat upon the back. 



