. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests -- Periodicals; Insects -- Ontario Periodicals. Figure 11. Section of a spider to show the arrangement of the internal organs \ o, 6, upper and under lips of the mouth; c, c, the oesophagus; cZ, J\ upper and under muscles of the sucking stomach; e. stomach \ g, g, ligaments attached to diaphragm under the stomach; f^ lower nervous gang- lion; k, upper ganglion; I Z, nerves to the legs and palpi; m, branches of the stomach ; n, poison gland; o, intestine ; p, heart; E, air-sac ; S, ovary; t, air-t
. Annual report - Entomological Society of Ontario. Entomological Society of Ontario; Insect pests -- Periodicals; Insects -- Ontario Periodicals. Figure 11. Section of a spider to show the arrangement of the internal organs \ o, 6, upper and under lips of the mouth; c, c, the oesophagus; cZ, J\ upper and under muscles of the sucking stomach; e. stomach \ g, g, ligaments attached to diaphragm under the stomach; f^ lower nervous gang- lion; k, upper ganglion; I Z, nerves to the legs and palpi; m, branches of the stomach ; n, poison gland; o, intestine ; p, heart; E, air-sac ; S, ovary; t, air-tube ; tt, spinning-glands. 3. —Classification. To enter into a minute account of the classification of the Arachnida would be very tedious, and occupy an undue amount of space. We shall therefore content our- selves with mentioning some of the more important families of spiders, and describe some of their characteristics. The largest known spiders belong co the family Mt/galidce. They may be at once distinguished by the shape of their mandibles and the terrible claws which proceed from them. In most spiders the claws are set sideways (as in Ejyeira Figure 7, D.), but in this family they are bent downwards, and strike the prey as a lion would clutch his victim with his curved talons. The body is usually very hairy and dark-col- oured. Most species have only four spinnerets, one pair of which are long and are turned up behind the abdomen ; they have four air-sacs under the front of the abdomen, instead of two, as other spiders. The eyes are collected together on the* front of the head. They live only in warm countries. Figure 12 re- pi'esents Mygale Hentzii, a species found in Texas and Arizona. Many wonderful stories have been told about the ferocity of these huge spiders, their power of catching and eating small birds and other aiii-. mals. These accounts were gener- ally discredited and looked upon as mere " travellers' tales," but of late years fresh evidence has
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