28 NATURAL HISTORY AND TOPOGRAPHY OF GROTON, MASS. 



Bird-lice of many kinds. The Euplexoptera Order — Ear- 

 wigs, rare. 



The Orthoptera Order contains the Running Orthoptera, 

 Blattidae, or Cockroaches, several kinds; the Walking 

 Orthoptera, Phasmidae, Walking Sticks, one kind ; the Jump- 

 ing Orthoptera, Acrididae, or Short-horned Grasshoppers, 

 several kinds ; Locustidae, Long-horned Grasshoppers, sev- 

 eral kinds ; Gryllidae, Crickets, several kinds. The Physopoda 

 Order contains Thrips, one kind. The Hemiptera Order con- 

 tains Bugs, Lice, Aphids, and others — twenty-five families ot 

 Bugs, many species; one family of Lice, and nine of Aphids. 

 The Neuroptera Order contains three families, the Dobsons, 

 the Aphis Lion, the Ant Lion. 



The Mecoptera Order contains the Scorpion-flies and 

 others. The Trichoptera Order contains the Caddice-flies. 

 They live in brooks, when immature, decorate their houses 

 with sticks, snail shells, pebbles, etc., living inside and drag- 

 ging them along with them. 



The Lepidoptera Order contains the Moths, Skippers, and 

 Butterflies, a beautiful and interesting order. There are 

 thirty-four families of Moths, including many hundred species; 

 two families of Skippers, several species; four families of 

 Butterflies, including about one hundred species. 



The Diptera Order, the Flies, contains thirty families and 

 many species. The Coleoptera Order contains the Beetles, 

 a handsome and interesting order, eighty families and eleven 

 hundred species. The Hymenoptera Order contains the 

 Bees, two families ; Wasps, eight families ; and two families 

 of Ants, also Saw-flies, Horn-tails, Gall-flies, Ichneumon-flies, 

 and others. This is a very interesting order. The Ichneu- 

 mon-flies attract considerable attention, especially the large 

 Thalessa lunator. It measures ten inches from tip of an- 

 tennae to the tip of its ovipositor. These are the insects which 

 are often seen on the maple tree in front of Mr. Torrey's 

 store. It is a parasite of a Horntail which places its eggs in- 

 side the trunks of trees; the Ichneumon-fly drills a hole into 

 the tree near these eggs ; the young of this insect eats the 

 larva of the Horntail. 



